Metal deep drawing parts must grasp several skills, have you learned?
Metal stamping mould product type many, want to say more I think metal deep drawing of product technical content is one of them.
Why is it so hard to deep drawing die, the design and calculation is a difficult, mold design to complete the test is a difficulty.
For designers, have rich design experience is needed to design a relatively reasonable mould structure.
To determine whether metal deep drawing product qualified factors are many, in addition to design, fitter, and deep drawing materials, press (
Choose, whether or not to use lubricating oil and so on.
Small below the author with everybody together discuss the mysteries of the deep drawing products.
Deep drawing metal material selection often deep drawing parts out of the problem is out on the material, the reasonable selection has mould half the battle.
In general, applicable to stretch of cooling-plate series are: 08 al, 08, 08 f, 10, 15, 20 steel and so on, 08 steel as the main representative.
Calculate the size of material for solid of revolution, deep drawing of cylindrical products, the calculation principle of cutting size is calculated based on the principle of the volume of material constant, even if the material thinning phenomenon will happen in the process of deep drawing, but its volume will not change.
For complex shape metal deep drawing of the product, its calculation method would be tedious, because the material thickness changes its appearance also attached, even now have a 3 d software, the simulation analysis software under the condition of low assistance to calculate, still it is hard to achieve expected effect of cutting.
How to determine the complex drawing size of products?
Can only try to edge, probably determine how much material, and then try to design deep drawing structure, finally get the right size of open.
Tensile coefficient confirmed the deep drawing products need how many steps, each step stretching height, what is the size is calculated by tensile coefficient.
Different tensile structure, the deep drawing process of elongation coefficient is different also, so you need to make reasonable choice according to the actual product.
Factors affecting tensile coefficient are: the material properties, material thickness, drawing number, drawing method, the die structure, lubricity, etc.
Tensile coefficient: if the test has the product cracking situation, can have a try next mold coating of lubricant (
Or materials covered a layer of thin film on surface of the concave die can also achieve a certain effect.
Deep drawing products for many times, because the material is cold plastic deformation, will appear after each drawing hardening phenomenon, resulting in the plastic fell prone to all kinds of stretch problem, so for many deep drawing products can be appropriate for annealing heat treatment, in order to improve the plastic properties of materials.
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