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What are the ways to prevent the damage of stamping parts of hardware vehicles?
2020-01-06 10:17:10

Gold stamping parts are widely used in all fields of our life, including some electronic devices, auto parts, decorative materials, etc.

Measurement method of hardware stamping parts: for hole measurement of hardware stamping parts, the small value of Zui is taken according to the measurement method of go no go gauge. Generally, the small value of Zui can be recorded when measuring with caliper (excluding the small value, such as the error caused by measurement error), (not excluding the special situation) the large value of Zui recorded has no practical significance with the average value, and it is significant for the measurement of hole diameter in all directions Small differences should be recorded in the roundness of the geometric tolerance, not in the hole diameter.

In addition, if it is surveying and mapping, and there is no size to refer to, it should be determined according to the cross-section conditions, and its average value cannot be taken alone. For example, the measured Zui small value may be caused by the wear of the punch somewhere, and the light band of the cross-section is very small at this time, then the Zui small value is meaningless.


Automobile sheet metal parts


Generally speaking, the wear of punch causes the reduction of punch (the special-shaped hole needs to be analyzed in detail). Therefore, the Zui value can be taken during the mapping, and the section quality should not be forgotten, because the Zui value within the basic size of bore + allowable deviation is multiplied by 0.5 ~ 0.75 during the manufacturing of punch, so as to leave the amount of wear. After a period of time, the use of punch becomes smaller, but as long as the section quality still passes, then If the value is still within the tolerance range, it is correct to take the larger value of Zui (in the same way, it should be ruled out that the larger value has deformation in the direction of plate thickness, such as hole warping and other factors, especially the thin plate).

The application of hardware stamping parts in daily life is very common. After installation, the hardware stamping parts should be maintained to prevent rust erosion. When using, they should be closed and opened gently to prevent hard closing and hard opening, resulting in damage. So how to prevent the damage of metal stamping parts after processing?

Methods to prevent damage of hardware stamping parts:

1. The model, specification and function of the hardware fittings shall conform to the current national standards and relevant regulations, and match with the selected plastic steel doors and windows.

2. For sliding windows with a width of more than 1 m, or doors and windows with double-layer glass, double pulleys or dynamic pulleys should be set.

3. The sliding hinge shall not be made of aluminum alloy and shall be made of stainless steel.

4. When installing hardware with fastening screws, metal lining plate must be set inside, and the thickness of lining plate shall be at least twice of fastener pitch. It shall not be fastened on the plastic profile or non-metallic lining.

5. The hardware fittings shall be installed after Zui, and the door and window locks, handles, etc. shall be assembled after the window and door leaves are put into the frame to ensure accurate position and flexible switch.


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