Stamping Equipment About Stamping Parts

The accuracy and rigidity of stamping equipment (such as presses) are extremely important to the die life. High precision and rigidity of stamping equipment will greatly improve the die life. For example, the die material of complex silicon steel sheet is Cr12MoV, and the average regrinding life is 1-3 million times when used on ordinary open presses, while the regrinding life of the die can be 60,000 to 120,000 times when used on new precision presses. Especially for small gap or no gap die, carbide die and precision die, we must choose the press with high precision and good rigidity, otherwise, it will reduce the die life, and in serious cases, it will damage the chess tool.

Stamping Die Design About Stamping Parts

(1). Accuracy of guiding mechanism of die. Accurate and reliable guidance, to reduce the wear of the working parts of the mold, to avoid convex and concave die gnawing impact, especially no clearance and small clearance punching die, composite die and multi-station progressive die is more effective. In order to improve the life of the mold, according to the nature of the process and the requirements of the precision of the parts, we must correctly select the guide form and determine the accuracy of the guide mechanism. In general, the accuracy of the guiding mechanism should be higher than the convex and concave die fit tips.

(2). Mold (convex and concave die) edge geometry parameters. The shape, clearance and corner radius of the convex and concave dies not only have a great influence on the forming of the stamped parts, but also have a great impact on the wear and life of the dies. For example, the clearance of the die directly affects the quality of the punched parts and the life of the die. If the precision requirement is high, it is appropriate to choose a smaller clearance value; on the contrary, it is appropriate to increase the clearance in order to improve the die life.

Stamping Process About Stamping Parts

(1). Stamping parts of raw materials.

In actual production, the poor thickness tolerance of raw materials for external press parts, fluctuation of material performance, poor surface quality (such as rust) or unclean (such as oil), etc., will cause adverse consequences such as increased wear of die working parts and easy chipping.

For this reason, attention should be paid to.

①. As far as possible, use the raw materials with good stamping process to reduce the stamping deformation force;

②. Before stamping, the grade, thickness and surface quality of raw materials should be strictly checked, and the raw materials should be wiped clean and the surface oxidation and rust should be removed if necessary;

③. According to the stamping process and the type of raw materials, softening treatment and surface treatment can be arranged if necessary, as well as the selection of suitable lubricant and lubrication process.

(2). Displacement and lapping.

The unreasonable reciprocating feeding method and the too small lap edge value will often cause the die to wear sharply or the convex and concave die to gnaw. Therefore, while considering the improvement of material utilization, it is necessary to reasonably select the lining method and lap value according to the processing batch of parts, quality requirements and mold fit clearance in order to improve mold life.

Stamping Die Material About Stamping Parts

The influence of mold material on mold life is a comprehensive reflection of material type, chemical composition, organizational structure, hardness and metallurgical quality. The die life tends to be different for different materials.

For this reason, two basic requirements are put forward for die working parts materials.

①. Material performance should have high hardness (58 ~ 64HRC) and high strength, and high wear resistance and sufficient toughness, heat treatment deformation is small, a certain degree of thermal hardness;

②. Process performance is good. Die work parts processing and manufacturing process is generally more complex. Therefore, it must have the adaptability to various processing processes, such as malleability, machinability, hardenability, hardenability, quenching crack sensitivity and grinding processability. Usually, according to the material characteristics of the stamping parts, production lot, precision requirements, etc., the die material with good performance is selected, taking into account its processability and economy.

BNE HARVEST TECH LTD company is committed to high standard and one-stop precision mold strength enterprise, providing hardware stamping mold customization, stamping parts mold customization for our customers, and is a trusted stamping mold processing manufacturer near you.