In many production professions, hard alloy wire drawing dies are now widely used for processing and production. Whether it is copper or aluminum wire, the drawing force of copper wire is greater than that of Nalu wire under the same conditions, and the drawing wire It is easy to break, so drawing aluminum wire should have a greater safety factor. As long as you have this drawing die for drawing, it can have a very good and strong working stability. The use of cemented carbide wire drawing dies is used to stretch the wire. Under the effect of a certain amount of tension, plastic deformation occurs through the drawing die to reduce the cleansing surface and increase the length of a pressure processing method, so it can produce cables. A product with a very long length, because it has a common stretching function, the stretched wire has a relatively accurate scale, the surface is smooth, the cross-sectional shape can be varied, and it can stretch the wire of large length and various diameters. The drawing die used in the professional cable processing should be more suitable. Except for a little pink during the stretching process, the volume changes Shengwei, and because of its outstanding tensile strength, the volume of the metal before and after stretching is basically the same. Every step in the production process of cemented carbide drawing dies is critical, which directly affects the quality and function of cemented carbide drawing dies after production. What is the production process of cemented carbide drawing dies? Based on more than 50 years of production experience, our company’s skilled engineers have summarized the following very important key processes:
1: Spray drying of raw materials: The mixture is prepared with high-purity nitrogen protection under a closed loop mirror, which effectively reduces the possibility of oxygenation of the mixture in the preparation process, and can effectively ensure the purity of the material and avoid the contamination of the material.
2: CIP (Cold Isostatic Limit): The 3000Mpa isostatic press is used to effectively prevent the occurrence of limitation defects and provide an outstanding guarantee for limiting the uniform density of the blank.
3: SP low-pressure burning strength: the maximum sintering pressure can reach 100 kg, so that the void inside the alloy body can be effectively eliminated, so as to obtain a high-hardness, high-strength cemented carbide drawing die with outstanding densification. Advanced temperature control system can effectively reduce the possibility of quality fluctuations in cemented carbide drawing dies.
4: Cryogenic treatment: useful to improve the micro-arrangement structure of the cemented carbide drawing die, so that the internal stress of the cemented carbide drawing die can be effectively eliminated.
5: Analysis and testing: The guo family-level testing center can carry out complete various functional tests and the selection of ultrasonic flaw detection methods to ensure the quality and stability of cemented carbide drawing dies.
Cemented carbide mould
Cemented carbide drawing dies have passed the strict control of the above production process and have the following characteristics:
1. No drawing die explosion: Use raw tungsten powder with a purity of more than 99.95% as the primary raw material, with extremely low impurity content, and no drawing die explosion
2. Long service life: The materials are selected from the unique formula technology, and the wear-resistant element materials are added to greatly increase the service life of the wire drawing die;
3. Lower processing cost: Imported presses are used to limit the drawing dieing, and overpressure sintering furnace is used for sintering. The product has a round shape, a small margin for external dimensions and a lower processing cost.
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