Metal stamping tensile pieces of production common problems and solutions
Metal stamping tensile) in our daily life is everywhere, metal stamping tensile) when mass production, all kinds of problems because of various reasons, this paper summarizes the experience to share the solution: 1.
Metal stamping tensile) shape and size is not the main reason is that plays and positioning are not allowed to be caused by, in addition to taking steps to reduce springback, should also improve the reliability of the blank positioning.
On the surface of the metal stamping tensile strain is due to improper material, low hardness, low roughness and heat treatment, die corner wear, bending blank poor surface quality is poor, the thickness of the material, process scheme selection is not reasonable, the lack of lubrication, etc.
Metal stamping tensile bending crack (
Bending line with sheet metal corrugated direction Angle is not in conformity with the stipulations layout, one-way v-shaped bending, the bending line should be perpendicular to the direction of corrugated;
Two-way bending, bending line and corrugated direction best 45 degrees.
Tensile plastic materials is poor.
The bending radius is too small, poor quality of pickling.
Insufficient lubrication friction is bigger.
Intensive radius wear or gap too small feeding resistance increased.
Drawing a blank shearing and cutting surface quality is poor burr, crack.
Material thickness size serious difficulty out-of-tolerance feed solution: 1.
Metal stamping tensile) forming shape should be brief, symmetry, a deep drawing as soon as possible.
Need to repeatedly tensile parts, under the premise that to ensure that the necessary quality of appearance, appearance can occur in the process of stretch marks.
On the premise of ensure the installation requirements, tensile side wall has a certain slope.
Stretch of the bottom of the flange or on the side of hole to the side wall are appropriate.
Stretch the bottom and wall, flange and the wall and the four corners of the rectangular pieces, appropriate to radius.
The scale of the metal stamping tensile), not be labeled with dimensions.
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The development of.
Metal stamping tensile) 3000000 PCS/month production capacity.
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