トキワロイ工業 List of Products and Services

If we consider carving tools, I think it is common for sets to be sold that include multiple types of blades with subtly different shapes, even if they are all the same size. The materials for these blades are usually very hard and require a considerable amount of effort to process. If all the blades are made by cutting and polishing from the same angular material, the overall processing time will be quite significant. However, if we have the required quantity of materials that are already close to the finished shape for each type of blade, wouldn't the overall processing time be greatly reduced? *For more details, please refer to the PDF document or feel free to contact us.*

• others

For example, products like sets that only demonstrate their value when multiple types are available, such as carving tools, or series products that need to offer slightly different sizes and shapes of similar designs to meet user needs, will have different material shapes used for each model number. At Tokiwa Roi, we provide manufacturers who create such products with the necessary sizes and shapes of materials, one by one, for all types of materials. Of course, we also accommodate single-item processing for prototype development and other needs. 【Manufacturing process that makes "Is it possible to create something like this?" a reality】 1⃣ Initial consultation 2⃣ Review of drawings 3⃣ Discussion 4⃣ On-site visit if necessary 5⃣ Providing a unique solution *For more details, please refer to the PDF document or feel free to contact us.

• others

Since our establishment, our company has been engaged in precision joining of dissimilar metals. Here, we introduce examples of precision brazing processed products of 【stainless steel (SUS) × cemented carbide】. This document provides a clear explanation of precision joining between dissimilar metals with accompanying images. Additionally, we offer a detailed explanation of the key points in brazing between dissimilar metals! 【Contents】 ■ Product images after brazing processing ■ Enlarged view after grinding the brazed area ■ Key points of brazing If you are interested, please feel free to download the document or contact us.

• Picking robots (shelf transport robots, arm picking robots)

"Braze welding," used for the precise joining of fine precision parts and thin plates, raises the question of what factors determine its accuracy. This document explains the "three main factors that determine the accuracy of brazing," and provides detailed explanations for each of these factors. [Contents] ■ Selection of suitable filler metal and flux for the base material ■ Temperature management from heating to cooling ■ Design of appropriate joint parts, etc. If you are interested, please feel free to download the document or contact us.

• Picking robots (shelf transport robots, arm picking robots)

In the joining of precision machined products, it is required that there is little processing alteration or deformation, as well as reliability in joint strength and functionality of the joint (the bonding part). This document explains "joining technologies used for precision machined products," detailing representative joining techniques used for fine precision parts and thin sheets, specifically "brazing (including soldering)" and "adhesion." [Contents] ■ Key points required for joining precision machined products ■ About brazing ■ About adhesion, etc. If you are interested, please feel free to download the document or contact us.

• Picking robots (shelf transport robots, arm picking robots)

Since our establishment, our company has been engaged in precision joining of dissimilar metals. We are pleased to present a document explaining our "Precision Joining Technology for Hard Metals." This document provides an overview of "various metal joining techniques." It clearly explains the principles of joining, methods, mechanisms, and applications using easy-to-understand diagrams, making it a must-read for anyone interested in metal joining. 【Contents】 ■ Joining Principles (Material Joining, Chemical Joining, Mechanical Joining) ■ Joining Methods (Fusion Welding, Brazing, Adhesive Bonding, Riveting, etc.) ■ Mechanisms (described according to each joining method) ■ Applications (described according to each joining method) If you are interested, please feel free to download the document or contact us.

• Picking robots (shelf transport robots, arm picking robots)

The document explains "precision joining technology between dissimilar metals." When using special alloys such as cemented carbide, technology for joining dissimilar metals is required. Brazing is one of the most effective precision joining techniques and is used for joining cemented carbide, among other applications. With the technology for joining dissimilar metals, special alloys can be utilized in various situations, potentially expanding their range of applications. If you are interested, please feel free to download the document or contact us.

• Picking robots (shelf transport robots, arm picking robots)

The document provides an explanation of "brazing." It is written in a way that is easy to understand, even for those who have no prior knowledge of brazing. The content covers basic topics such as "What is brazing?" as well as the position of brazing among various welding techniques, the differences between brazing and welding, and examples of products that have been processed using brazing (with photos). If you are interested, please feel free to download the document or contact us.

• Drilling Machine
• Other measuring instruments

We provide precision machining services using cemented carbide and austenitic stainless steel (SUS304 series) as base materials for brazed products. The base material brazed with cemented carbide will undergo precision machining utilizing grinding and electrical discharge machining techniques. The brazed products have been heated in the previous process, which typically results in distortion of the base material. We will perform precision machining that requires strict geometric tolerances while removing the distortion of the base material. Particularly when the base material is made of SUS or other materials with a high coefficient of thermal expansion, significant warping occurs during the brazing process, and new warping can develop during the grinding process, necessitating advanced machining techniques. For more details, please refer to the "Machining Technology Special Feature" document.

• others

Typically, precision machined products using cemented carbide are often made from solid materials. One reason for this is that the stricter the required precision, such as surface roughness and geometric tolerances, the easier it is to control the machining of solid materials. However, even in brazed products where only the applicable parts are made of cemented carbide, if there is sophisticated brazing technology, it is possible to achieve precision machining in subsequent processes without issues, while also meeting the required precision of the finished product. In fact, considering cost and weight, solid materials made entirely of cemented carbide may not always be the optimal material choice for certain applications. Our company also supports precision machined products based on brazed items made of cemented carbide and austenitic stainless steel (SUS304 series). For more details, please refer to the "Processing Technology Special Feature" document.

• others

Castings are suitable for mass production of complex shapes, but due to the inability to perform heat treatment, wear resistance is a challenge. By brazing cemented carbide onto friction parts, wear resistance can be improved. For example, casting materials such as gray cast iron (FC material) are typically selected for their high degree of freedom in shaping and cost reduction during mass production. Even with such casting base materials, when strength and wear resistance are required, ductile cast iron (FCD material) may be used. Furthermore, if the wear environment at the action point of a tool made from FCD material is particularly harsh, enhancing the tool's effectiveness can be achieved by making only that specific action point from cemented carbide. In such cases, the brazing processing technology of castings and cemented carbide is utilized. However, there are also technical challenges associated with brazing cemented carbide to castings. For more details, please refer to the "Processing Technology Special Feature."

• Drilling Machine

Typically, carbide is selected as a material when wear resistance is required. However, considering cost and difficulty in processing, there are many challenges in manufacturing solid carbide products. In such cases, carbide brazing, where only the active parts are made of carbide, can be an effective solution. However, when making only the active parts out of carbide, careful consideration of the joint design with the base material is necessary; otherwise, the functionality of the critical carbide section may be compromised, potentially leading to tool failure. Therefore, it is essential to design the joint section and create appropriately shaped carbide components accordingly. For more details, please refer to the "Processing Technology Special" materials.

• Special Construction Method

The chuck for gripping objects may be exposed to wear depending on the target object. Therefore, highly wear-resistant carbide is sometimes selected as a material for the chuck. Particularly for the purpose of gripping objects, it is common to process the surface with a knurling treatment as an anti-slip measure, and this is done using carbide. In such cases, it is possible to manufacture the entire chuck tool from solid carbide, but it is also feasible to consider carbide brazed products where only the surface area, which is the action point, is made of carbide while the base material is made of steel. Ultimately, it can be considered that achieving the purpose can be accomplished by using carbide that has been knurled only in the areas exposed to wear. For more details, please refer to the "Processing Technology Special" materials.

• Loading Machine

Wear-resistant treatment that covers specific areas with a carbide plate without gaps to prevent tool wear caused by shock and friction. 【In what situations is this beneficial?】 - In environments where the tool surface is exposed to friction with debris, and wear occurs predominantly in specific areas. - When there are inconsistencies in the wear-resistant treatment on the tool surface, and specific weak points become the origin of wear, it is important to prevent this. ⇒ It is crucial to bond carbide without gaps in necessary areas according to the tool shape. For more details, please refer to the "Processing Technology Special" materials.

• Foundation construction machinery

In drilling bits, inappropriate claw shapes can create shock resistance, which may lead to a decrease in the drilling performance of the machine itself. To fully utilize the tool's performance, it is necessary to consider optimal shape design to reduce the overall shock resistance of the tool and the brazing position of the carbide part that will be subjected to action. In cases where the tool is welded to the machine body, if the welding position is too close to the brazing position, there is a risk of tool defects due to reduced brazing strength caused by the heat during welding. In other words, the shape of the carbide part and the brazing position become important points. For more details, please refer to the "Processing Technology Special Feature."

• Drilling Machine
• Ground foundation construction method

If the tip of the tool has a specific shape, it is considered that the shape itself possesses functionality. However, if the physical properties of the tip do not have sufficient wear resistance against friction with the workpiece, there is a possibility that the original functionality may be compromised due to shape changes caused by wear. Therefore, a bonding design that covers the surface of the tip with a hard material without altering the mechanical properties or shape of the tip is effective. When replacing the surface of the tool's base material at the tip with a hard alloy, a joint design that takes bonding strength into account and advanced brazing techniques are required. Our company is equipped to handle the design and manufacturing of such hard alloy brazing processes. For more details, please refer to the "Processing Technology Special Feature."

• Ground improvement

Repeated friction at the same locations, such as the sliding parts of various machines and the outer surfaces of construction machinery, can lead to a decline in machine performance due to wear. Among hard special steels, cemented carbide has extremely excellent wear resistance, but it cannot be directly welded. Therefore, using S45C, which has good weldability, as the base material, a cemented carbide plate is brazed onto the grooved area, resulting in a "wear-resistant plate (brazed cemented carbide type)." By innovating the shape of the cemented carbide and the depth of the brazing position, we aim to improve wear resistance. If you are interested in various wear-resistant processing techniques, please refer to the "Processing Technology Special Feature" or feel free to contact us.

• Drilling Machine

Repeated friction at the same points, such as sliding parts of various machines and the outer surfaces of construction machinery, can lead to a decline in machine performance due to wear. Among hard special steels, cemented carbide has extremely excellent wear resistance, but it cannot be directly welded. Therefore, using S45C, which has good weldability, as the base material, a cemented carbide plate is brazed onto the grooved area, resulting in a "wear-resistant plate (brazed cemented carbide type)." By innovating the shape of the cemented carbide and the depth of the brazing position, we aim to improve wear resistance. If you are interested in various wear-resistant processing techniques, please refer to the "Processing Technology Special Feature" or feel free to contact us.

• Drilling Machine

If the tip of the tool has a specific shape, it is considered that the shape itself possesses functionality. However, if the physical properties of the tip do not have sufficient wear resistance against friction with the workpiece, there is a possibility that the original functionality may be compromised due to shape changes caused by wear. Therefore, a bonding design that covers the surface of the tip with a hard material without altering the mechanical properties or shape of the tip is effective. When replacing the surface of the tool's base material at the tip with a hard alloy, a joint design that takes bonding strength into account and advanced brazing technology are required. Our company can accommodate the design and manufacturing of such hard alloy brazing processes. For more details, please refer to the "Processing Technology Special Feature."

• Ground improvement

While cemented carbide has the strength of being very resistant to friction, it also has the weakness of being brittle and susceptible to chipping when subjected to impact. To maximize the performance of tools, it is necessary to have design techniques that leverage the strengths of cemented carbide and processing techniques that overcome its weaknesses. The key technical elements for effectively utilizing cemented carbide are mainly the following three: ◎ Powder metallurgy technology: A technique that controls metal properties and dimensional tolerances by adjusting the processes of selecting, mixing, pressing, forming, and sintering raw powder. ◎ Cemented carbide bonding technology: A technique that appropriately bonds cemented carbide to various base materials using methods such as brazing, adhesives, and press-fitting. ◎ Precision machining technology for cemented carbide: A technique that performs precision machining on cemented carbide, which is a difficult material to grind, to achieve the required accuracy for specific applications. If you are considering extending the lifespan of various machine parts or selecting materials that can withstand specific operating environments, please take a moment to read the technical handbook. 【Featured Examples (Excerpt)】 ◆ Sintering dimension management of cemented carbide products ◆ Brazing technology for cemented carbide to castings ◆ Brazing technology for cemented carbide to stainless steel ◆ Improved machining technology for cutting edge shapes

• Ground foundation construction method

In tools where carbide is used at the tip for wear-resistant applications, there are cases where impact can act as a resistance, leading to a decrease in the tool's effectiveness. To fully utilize the tool's performance, it is necessary to consider optimal shape design to reduce the overall impact resistance of the tool, as well as the brazing position of the carbide part that will be subjected to stress. In cases where the tool is welded to the machine body, if the welding position is too close to the brazing position, there is a risk of tool defects due to a decrease in brazing strength caused by the heat during welding. In other words, the shape of the carbide part and the brazing position become crucial points. For more details, please refer to the "Processing Technology Special Feature."

• Drilling Machine
• Ground foundation construction method

The chuck used for gripping objects may be exposed to wear depending on the object being gripped. Therefore, highly wear-resistant carbide is sometimes selected as a material for the chuck. Particularly for the purpose of gripping objects, it is common to process the surface with a knurling treatment as an anti-slip measure, and this is done using carbide. In such cases, it is possible to manufacture the entire chuck tool from solid carbide, but it is also feasible to consider carbide brazed products where only the surface area, which is the action point, is made of carbide while the base material is made of steel. Ultimately, it can be considered that simply applying knurling to the carbide at the areas exposed to wear would achieve the intended purpose. For more details, please refer to the "Processing Technology Special" materials.

• Loading Machine

Typically, super hard materials are selected when wear resistance is required. However, considering cost and difficulty in processing, there are many drawbacks to manufacturing solid products made entirely of super hard materials. In such cases, super hard brazing, where only the active parts are made of super hard material, can be an effective solution. However, when making only the active parts super hard, careful consideration must be given to the design of the joint surface with the base material; otherwise, the functionality of the crucial super hard part may decrease, and in some cases, it could lead to tool failure. Therefore, it is necessary to design the joint section and to process the super hard material into an appropriate shape accordingly. For more details, please refer to the "Processing Technology Special" materials.

• Special Construction Method

The reason why castings such as gray cast iron (FC material) are selected as materials is believed to be due to their high degree of freedom in shaping and the cost savings during mass production. Even for such castings, when strength and wear resistance are required, ductile cast iron (FCD material) may be used. Furthermore, when using tools made from FCD material in environments where the wear conditions are even harsher, enhancing the effectiveness of the tool can be achieved by making only the working area from cemented carbide. In such cases, the brazing processing technology of castings and cemented carbide is utilized. However, there are also technical challenges associated with brazing cemented carbide and castings. For more details, please refer to the "Special Feature on Processing Technologies and Ideas for Cemented Carbide."

• Drilling Machine

We provide precision machining services for base materials that are brazed with cemented carbide and austenitic stainless steel (SUS304 series). The base material brazed with cemented carbide will be precisely machined using techniques such as grinding and electrical discharge machining. The brazed products are heated in the previous process, which usually results in distortion of the base material. We will perform precision machining that requires strict geometric tolerances while removing the distortion of the base material. Particularly when the base material is made of SUS or other materials with a high coefficient of thermal expansion, significant warping occurs during the brazing of cemented carbide, and new warping can also develop during the grinding process, necessitating advanced machining techniques. For more details, please refer to the "Cemented Carbide Machining Technology and Idea Introduction Special Feature" document.

• others

Super-hard processed products are typically completed by managing dimensional accuracy through grinding or electrical discharge machining from sintered material blocks. Of course, these processes are necessary to achieve dimensional accuracy below 100 microns in actual precision machined products. However, even in sintered products that do not undergo these secondary processes, special shape press forming and a certain level of dimensional accuracy management can be achieved depending on the mold design. Additionally, costs and delivery times are improved compared to processed products. For more details, please refer to the "Processing Technology Special Feature" materials.

• others

In the case of cemented carbide brazed products, if you want to change only the cutting edge of the cemented carbide tip, you can consider improving the cutting edge shape. The cemented carbide is brazed to the base material. Therefore, by reheating it to the melting temperature of the brazing material to melt the brazing material and remove the cemented carbide tip, a new cemented carbide tip can be attached. For example, if you want to change the rake angle of the cutting edge of the cemented carbide tip, you would remove the tip, cut the base material, process a new brazing surface, and then braze the tip again. If you also want to change the shape of the tip, you would braze a new tip of a different shape. While care must be taken regarding the thermal stress effects and structural changes to the base material due to reheating, if these issues can be managed through temperature control, it is possible to make improvements only to the functional parts of the tool while using the original base material. For more details, please refer to the "Processing Technology Special Feature" materials.

• Drilling Machine

This is a special tool that is bonded to the base material surface with carbide without any gaps. If there are gaps between the carbide plates on the tool surface, deterioration of the tool can begin from those gaps, and in some cases, there is a possibility of breakage. This processing is effective in such situations. The key point is to ensure that there are no gaps between the carbide plates by aligning the right angles at the chip corners during bonding. Additionally, the carbide end faces are polished to ensure they do not protrude from the base material. For more details, please refer to the "Processing Technology Special Feature" materials.

• Special Construction Method

Wear-resistant treatment that covers specific areas with a carbide plate without gaps to prevent tool wear caused by shock and friction. 【In what situations is this beneficial?】 - In environments where the tool surface is exposed to friction with debris, and wear occurs predominantly in specific areas. - When there are inconsistencies in the wear-resistant treatment on the tool surface, and specific weak points become the origin of wear, it is important to prevent this. ⇒ It is crucial to bond carbide without gaps in the necessary areas according to the tool shape. For more details, please refer to the "Processing Technology Special" materials.

• Foundation construction machinery

Typically, precision machined products using carbide are often made from solid materials. One reason for this is that the stricter the required precision, such as surface roughness and geometric tolerances, the easier it is to control the machining of solid materials. However, even with brazed products where only the applicable parts are made of carbide, if there is sophisticated brazing technology, it is possible to achieve precision machining in subsequent processes without issues, and to meet the required precision of the finished product. In fact, considering cost and weight, solid materials made entirely of carbide may not always be the optimal material choice for specific applications. Our company also supports precision machined products using carbide and austenitic stainless steel (SUS304 series) as the base material for brazed items. For more details, please refer to the "Special Feature on Carbide Machining Technology and Ideas."

• others

We would like to introduce the main products of ultra-hard materials handled by Tokiwa Roid Industries. Starting with "various chips related to boring" in horseshoe and house shapes, we also offer "plate chips" related to machine cutting tools. Chamfering chips can be adjusted for angle and dimensions. Although wear-resistant tool-related products are not listed due to their special shapes, we welcome inquiries for custom manufacturing. 【Product Lineup】 ■ Impact Resistance Series - Chips for ground drilling - Metal crown chips for boring - Chips for crushers and shredders ■ Wear Resistance Series - Ultra-hard materials for machine cutting tools (plate chips, chamfering chips) - Chips for optical lens polishing tools - Special shape chips *For more details, please refer to the PDF document or feel free to contact us.

• Ground foundation construction method
• Reinforcement and repair materials
• Geological Survey

Our company designs and manufactures urban development tools tailored to your specifications. Therefore, this catalog only includes some of our key products. There are also products with shapes and dimensions that are not listed. Additionally, we can design products according to your requirements, so please feel free to consult with us. *For more details, please refer to the PDF materials or feel free to contact us.

• Safety and consumables
• Work tools

Since our founding in 1955, we have been responding to the detailed needs of customers in various fields through the manufacturing of cemented carbide for over half a century. The strengths we have cultivated during this time are our production system capable of "small lot production" and "custom-made orders." Moving forward, we aim to be a cemented carbide manufacturer that utilizes these strengths to solve challenges in the field. *For more details, please refer to the PDF document or feel free to contact us.*

• Ground foundation construction method
• Ground improvement
• Residential foundations

At Tokiwa Roy Industrial, we accept orders for the production of "special small bit-related" products tailored to specific applications. Dimensions and shapes can be customized upon consultation. We can also process custom shapes for the base material, not just the carbide tip shapes, for cutter bits with a width of 19 millimeters or less that are mounted on small-diameter steel pipes, according to your needs. Additionally, we accommodate orders for small quantities as prototypes. *For more details, please refer to the PDF materials or feel free to contact us.

• Ground improvement
• Ground foundation construction method
• Residential foundations

At Tokiwa Roi Industries, we accept orders for the production of "special-shaped chips" tailored to our customers' applications. We will consult with you on dimensions and shapes based on your drawings and process carbide chips according to your specifications. We can accommodate even small quantities.

• others

At Tokiwa Roy Industrial, we accept orders for the production of "ground drilling chips." We can produce carbide chips tailored to your application and method, even in small quantities. Additionally, we can accommodate custom specifications such as dimension specifications and angle adjustments.

• others

At Tokiwa Roi Industries, we accept orders for the production of "metal crown tips for boring." We use materials with excellent wear resistance, with a hardness of around 90 as indicated by HRA. Orders can be placed starting from 500 pieces. For prototype orders, we can accommodate requests starting from 100 pieces. 【Features】 ■ Capable of handling chamfering and C faces ■ Uses materials with excellent wear resistance and a hardness of around 90 as indicated by HRA ■ High hardness materials with a hardness of 91 or higher are also available ■ Orders can be placed starting from 500 pieces ■ For prototype orders, we can accommodate requests starting from 100 pieces *For more details, please refer to the PDF document or feel free to contact us.

• Geological Survey
• Ground foundation construction method
• others