parts processing Surface treatment and matched stack

When leaving in machining parts processing surface grinding mark is the point, the stress concentration, is the source of crack propagation, therefore in the end, the need for machining parts surface strengthening and polishing, disposed by benchwork hidden processing. On the edge, some on acute and orifice, R pour blunt. Generally, Machinery Fittings surface produces 6-10 mu m around the metamorphic hardening layer, color tan-white brittle and hardening layer, with residual stress before use, must be fully eliminate hardening layer, the method for surface polishing and grinding hardening layer removed.

In grinding, electric machining processing , workpiece magnetized will have certain, has a weak magnetic, very easy to absorb a small thing, therefore, before the assembly for workpiece for demagnetization, using ethyl acetate clean surface. Assembly process, see all parts, ZhaoJi assembly, then each parts of equipment, between the order list, then begin should pay attention to the general assembly, the first mold assembly installed guide guiding-column and then formwork and intensive, then with clearance, especially clearances between were matched stack adjustment, after the completion of the assembly to mould inspection, the overall situation to write report. To find the problem, can use the negative thinking method, i.e. from working procedure, after the forward from the precision machining, moldings, examine to identify key until and solve problems.

conclusion

The practice proves that good precision machining process control, which can effectively reduce the parts, scrap, effectively improve the success rate and a mold life-span.