The wire drawing die is probably firmly fixed near the die sleeve before grinding and polishing. The service life of the wire drawing die is importantly related to the quality of the insert sleeve. Especially when drawing large diameters and hard materials, the quality of the insert is more important. It is probably ensured that the die blank must be firmly fixed in the die sleeve at the actual drawing temperature to effectively ensure the service life of the cemented carbide. .

Although cemented carbide has high wear resistance, its toughness is very low. During the entire drawing process, it needs to accept a lot of stress. Therefore, it is necessary to insert the sleeve to increase the strength of the cemented carbide mold to prevent Breaking occurs at the time of use. Therefore, it is necessary to select appropriate mold sets based on practical conditions to satisfy the required drawing conditions.

The wire drawing die blank and the die sleeve should communicate, and the center line of the die hole is roughly straight with the die sleeve support. If the die blank is fixed in the die sleeve in an inclined state, the metal cannot be drawn correctly when the wire drawing die is used. .

　　The mold set data must satisfy the following requirements:

　　 1. The smooth material corrosion function used in the drawing production process has an outstanding ability to resist

　　2. The linear expansion coefficient should be as close as possible to the cemented carbide and die blank to ensure a strong connection between the cemented carbide die blank and the die sleeve

　　3. It has a higher coefficient of elasticity, which resists the remaining deformation of the die set when the drawing die blank is increased in size and drawn.

　　4, higher yield strength

Die sleeve data needs to be selected based on detailed drawing conditions. Steels such as 45# or 50# steel can be selected, and T8A, T10A, T12A carbon tool steels can also be used. The set of materials is probably made of alloy steel. Alloy steels commonly used as mold sleeves are: 9Crsi, 5CrMnMo, 35CrMnsi, etc.