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Anti-scale metal valve and manufacturing method thereof

A metal and scale technology, applied in the field of metal valve manufacturing, can solve the problems of shedding of the electroplating layer, poor casting performance, immature casting process, etc., to reduce the possibility of oxidation and bubble generation, improve flow performance, and save process costs. Effect

Inactive Publication Date: 2019-08-23
ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But now there are basically metal valves made of copper and zinc alloys on the market, which will cause secondary pollution of water quality. If used for a long time, the electroplating layer will fall off or copper rust will grow. Lead and copper rust will pollute tap water and damage people's health. The stainless steel faucet does not need electroplating, the manufacturing process will not pollute the environment, keep the water quality pure and hygienic, and will not need to be replaced frequently due to the peeling off of the electroplating layer
[0003] However, the stainless steel valves in the prior art are limited by the technical problems of poor casting performance, immature casting process, easy intergranular corrosion, easy scaling on the surface, rough inner surface and easy corrosion, and have not been widely used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An anti-scaling metal valve, the substrate is cast with ZG03Cr18Ni10, the inner surface is densely covered with a groove interlaced structure with a coverage rate of not less than 99%, spiral stripes with a width of 5μm-8μm, and a hexamethyldisiloxane hydrophobic film is fixed Floor.

[0027] The manufacturing method of the above-mentioned scale-resistant metal valve comprises the following steps:

[0028] 1) Preparation before production

[0029] ① Raw material preparation: Prepare 1Kg of ZG03Cr18Ni10 stainless steel masterbatch and sufficient amount of hexamethyldisiloxane by weight;

[0030] ② Preparation of modified process materials: prepare a sufficient amount of silica powder with a particle size of 5 μm-8 μm;

[0031] ③Equipment and tooling preparation: prepare sandbox, disposable metal valve imitation wax mold, sufficient amount of ethyl silicate hydrolyzate, sufficient amount of powdered kaolin clinker with a particle size of 800 mesh, sufficient amount of p...

Embodiment 2

[0045] The whole is consistent with Example 1, the difference is:

[0046] The manufacturing method of the above-mentioned scale-resistant metal valve comprises the following steps:

[0047] 1) Preparation before production

[0048] ① Raw material preparation: Prepare 1.2Kg of ZG03Cr18Ni10 stainless steel masterbatch and sufficient amount of hexamethyldisiloxane by weight;

[0049] 2) Investment manufacturing

[0050] ②Immerse the clean wax model in the ethyl silicate hydrolyzate, shake it up and down for 10 seconds, then take it out, and then evenly spread the mixed powdered kaolin clinker on the surface of the clean wax model coated with the ethyl silicate hydrolyzate to obtain Wax models to be processed;

[0051] ③Place the wax model to be treated obtained in step ② in a room temperature environment with a relative humidity of 65%, wait for it to dry and solidify automatically, and then immerse it in ethyl silicate hydrolyzate;

[0052] ④Repeat steps ②-③12 times to obta...

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Abstract

The invention discloses an anti-scale metal valve and a manufacturing method thereof. A base body of the anti-scale metal valve is cast through ZG03Cr18Ni10, staggered structures of grooves with the coverage rate not lower than 99% and spiral-stripe-shaped width of 5-8 microns are densely distributed on the inner surface, and a hexamethyl disiloxane hydrophobic membrane layer is fixed; and the anti-scale metal valve takes austenitic stainless steel as a base material, the process is simple and mature, the inner surface has a lotus effect, and cleaning is easy.

Description

technical field [0001] The invention relates to the field of metal valve manufacturing, in particular to an anti-scale metal valve and a manufacturing method thereof. Background technique [0002] Stainless steel, because it is safe and lead-free, has no corrosion and seepage, and will not cause secondary pollution to water quality, is actually very suitable for the manufacture of metal valves. But now there are basically metal valves made of copper and zinc alloys on the market, which will cause secondary pollution of water quality. If used for a long time, the electroplating layer will fall off or copper rust will grow. Lead and copper rust will pollute tap water and damage people's health. The stainless steel faucet does not need electroplating, the manufacturing process will not pollute the environment, keep the water quality pure and hygienic, and will not need to be replaced frequently due to the peeling off of the electroplating layer. [0003] However, the stainless...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C9/24B05D5/08B05D7/22B05D7/24F16K27/00
CPCB05D5/08B05D7/22B05D7/24B22C9/04B22C9/24F16K27/00
Inventor 赵正平
Owner ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
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