Steel-bonded gold wear parts die design reference

       Steel-bonded cemented carbide is a new type of engineering material that has both cemented carbide properties and certain characteristics of general steel. The design can neither be based on cemented carbide nor steel, but can only be designed based on its own performance. , To receive the best results.



    1. Wear-resistant parts: Such products usually require high hardness, good wear resistance and corrosion resistance. The first consideration in the design is the use environment and stress conditions to facilitate the selection of the corresponding steel-bonded carbide materials. Then the structure of the parts is designed according to the performance of the steel-bonded cemented carbide material. For the parts that are not large in size and bear less than the mechanical properties of the selected material, the overall structure can be adopted. For parts with large size, the force to bear is close to or greater than the mechanical properties of the selected material, the combined structure should be adopted, otherwise the parts will be damaged early.



    2. Cold punching, cold shearing, and cold heading molds: This type of mold has a wide range of applications, and the force is extremely complicated, and it is easy to fail early when used. In addition to the design, the reasons for the failure also involve processing accuracy, heat treatment, assembly accuracy, installation adjustment accuracy, and the quality of the operators (technical level, sense of responsibility, etc.). The design of this type of steel-bonded cemented carbide mold should analyze and calculate its stress status in order to select the corresponding alloy material. In terms of mold structure, steel-bonded cemented carbide parts and components should be reinforced or combined structure. Usually the lower mold adopts insert sleeve, and interference fit must be adopted when insert sleeve. For cold shear molds, the fit clearance design can be 1.5-2 times of the steel mold clearance.



    3. Refractory mold: This type of mold has low precision requirements. The cause of mold damage is that the molding surface is worn out by abrasives and is out of tolerance or drawn into grooves. There are also cases where the molding surface is worn by abrasives and chemically corroded. The former only needs to press 2.5-3 times the height of the forming surface to inlay or dovetail to fasten a certain thickness of steel-bonded cemented carbide plate, and the latter need to press 2.5-3 times the height of the forming surface to stick or fasten a certain thickness of dovetail. Corrosion resistant steel bonded hard alloy or hard alloy plate.