Production technology of faucet

I visited several factories and learned a little about the manufacturing technology of faucets.

At present, there are various faucets on the market, the main materials are brass, ABS plastic and stainless steel. Different materials have different characteristics and different advantages and disadvantages.

Traditional faucets are made of brass, and the normal process flow is copper ingot-smelting-casting-casting inspection-casting cleaning-machining-tolerance inspection-leakage inspection-grinding-surface inspection-electroplating-electroplating inspection-assembly-water testing-finished product inspection-packaging.

The most important steps are as follows:

1. Put the copper ingot into a furnace, heat it to above 1000, remove impurities, then pour it into a preformed sand mold and cool it. Sand mold is made of fine sand solidified and hammered, with aluminum template in the middle. Before grouting, fill the hollow part of the faucet with sand core, and knock out the sand core after the molten copper cools, which becomes the initial prototype of the faucet. Then, the sand grains are removed by a steel ball drum, and the surface is preliminarily treated.

2. Turn the primary embryo into a threaded tooth according to the size specification.

3. Grind the protruding edge with a grinding wheel, and then grind it with a cloth wheel.

4. Use hydrochloric acid to completely remove impurities, then nickel plating to ensure that the surface does not rust, and chromium plating after nickel plating is completed.

5. Assemble the finished product according to the drawing.

6. Standard inspection: The assembled finished product shall be subjected to pressure test, functional test and appearance inspection.

A seemingly simple process actually needs a very good management system and quality control system to achieve a relatively high quality.