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Manufacture method of corrosion-resistant metal valve

A manufacturing method and corrosion-resistant technology, used in manufacturing tools, heat treatment equipment, furnaces, etc., can solve problems such as affecting health, domestic water pollution, and easy corrosion, and achieve high surface oxidation resistance, long service life, low cost effect

Inactive Publication Date: 2018-11-23
南通鑫农阀门科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In terms of production technology and process, metal valves are more mature among domestic valves. Stainless steel valves and copper valves are more common in the market. There are also cast iron valves in slightly lower-end products, but there are quite a lot of defects in existing metal valves. , Metal valves are extremely prone to corrosion, rust, and plating peeling during long-term use. Heavy metals such as lead and tin in alloys used to manufacture metal valves will gradually penetrate into domestic water, causing pollution to domestic water. directly affect people's health

Method used

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Embodiment Construction

[0016] The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0017] Its manufacturing method comprises the following steps:

[0018] (1) The materials of the above components are smelted according to the above ratio, and the smelting temperature is 1100-1430°C.

[0019] (2) Put the above smelted material into the mold for pouring, the pouring temperature is 1100-1320°C.

[0020] (3) Cool the cast body in sand for 12-30 hours.

[0021] (4) Perform annealing treatment on the poured metal valve body, and the annealing temperature is 780-820°C.

[0022] (5) The metal mold blank is then subjected to quenching treatment, and the quenching temperature is 900-1230°C.

[0023] (6) Tempering the metal mold blank processed in step...

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Abstract

The invention discloses a manufacture method of a corrosion-resistant metal valve. Based on the material ratio and the manufacturing process of a metal material, the metal valve has the characteristics of corrosion resistance, low cost, high thermal fatigue performance, high thermal stability and excellent comprehensive performance, and also has high surface oxidation resistance and long service life.

Description

technical field [0001] The invention relates to the field of valve manufacturing, in particular to a method for manufacturing a corrosion-resistant metal valve. Background technique [0002] Valves are generally composed of a valve body and valve internals inside the valve body. According to the manufacturing materials, they can be divided into metal valves, plastic valves and ceramic valves. [0003] In terms of production technology and process, metal valves are more mature among domestic valves. Stainless steel valves and copper valves are more common in the market. There are also cast iron valves in slightly lower-end products, but there are quite a lot of defects in existing metal valves. , Metal valves are extremely prone to corrosion, rust, and plating peeling during long-term use. Heavy metals such as lead and tin in alloys used to manufacture metal valves will gradually penetrate into domestic water, causing pollution to domestic water. directly affect people's hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D1/18C21D9/00
CPCC21D1/26C21D1/18C21D9/0068
Inventor 汤宝田
Owner 南通鑫农阀门科技有限公司
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