Manufacturing method of full-stamped and stretched stainless steel water tap

Abstract

The invention discloses a manufacturing method of a full-stamped and stretched stainless steel water tap and relates to a manufacturing method of a stainless steel water tap. The manufacturing method comprises the following steps: (1) processing a main body: punching a reserved hole, stretching a boss, processing the plane of the boss, machining a valve core seat, drilling a water inlet and outlet hole, tapping a thread of the water inlet and outlet hole, chamfering the hole, turning a shell of the valve core seat, assembling the valve core seat and the shell, assembling the main body of the water tap, polishing, testing water and testing pressure; (2) processing a bent pipe; and (3) assembling the whole of the water tap. Compared with the existing precision casting method, the manufacturing method has the advantages of short processing cycle, high primary qualification rate, no sand air holes on the surface and the like, and belongs to the environmentally-friendly industry with low energy consumption, no electroplating and low pollution, mirror light can be polished on the surface, and the lead content is further below 0.025% and can achieve the requirements of American AB1953 bill, thereby being more environmentally-friendly.

Description

technical field [0001] The invention relates to a method for manufacturing a stainless steel faucet, in particular to a method for manufacturing a fully stamped and stretched stainless steel faucet. Background technique [0002] Most of the existing stainless steel faucets are precision casting. First of all, the main body of precision casting is heavy and the water channel is complicated. Only through welding and restructuring can not achieve mass production. The cost is high, the quality cannot be guaranteed, and it takes 15 working days to produce. One batch of products cannot be produced simultaneously with the bending pipe processing, which is the biggest bottleneck in the current production of stainless steel faucets; secondly, the surface of precision casting faucets is rough, and the initial sanding is repeated three times to achieve the most basic effect on the surface of stainless steel pipes. Repeated repair welding of pores consumes a lot of labor and low pass ra...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing stainless steel faucets are precision casting. First of all, the main body of precision casting is heavy and the water channel is complicated. Only through welding and restructuring can not achieve mass production. The cost is high, the quality cannot be guaranteed, and it takes 15 working days to produce. One batch of products cannot be produced simultaneously with the bending pipe processing, which is the biggest bottleneck in the current production of stainless steel faucets; secondly, the surface of precision casting faucets is rough, and the initial sanding is repeated three times to achieve the most basic effect on the surface of stainless steel pipes. Repeated repair welding of pores consumes a lot of labor and low pass rate. The surface cannot be polished to a mirror finish, but can only be brushed; third, the processing cycle of precision casting is long, the pass rate is low, the surface has many sand pores, high energy consumption, and dust Large, high-carbon, high-pollution manufacturing process

Even copper faucets contain lead and need electroplating, causing heavy metal pollution to the environment. There is copper rust on the inner surface, which is harmful to the human body. Generally, the lead content of copper faucets is between 4-8%, which cannot meet the U.S. AB1953 No Lead Environmental Protection Act requirements, lack of competitiveness, not suitable for future production

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