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Casting and molding method of copper-containing alloy type anti-bacterial stainless steel

An antibacterial stainless steel, casting molding technology, applied in casting molding equipment, casting mold components, casting molds, etc., can solve problems such as health threats, incompatibility, and loss of antibacterial functions, and achieve the effect of broadening the application field

Inactive Publication Date: 2014-07-09
GUANGXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three main types of antibacterial stainless steel: the first is to coat a layer of chemical coating with antibacterial effect on the surface of the material, but the chemical coating also becomes a potential threat to health while sterilizing
The second is to plate a metal material with antibacterial function on the surface, but this material is not suitable for products with high corrosion and high wear. Once the surface layer is corroded or peeled off, the antibacterial function will be lost
However, most of the antibacterial stainless steel products currently appearing are rods, pipes, and plates, which require secondary processing (welding, stamping, etc.) to form the final product
This is extremely unsuitable for food processing machinery, sugar production machinery and pharmaceutical production machinery with complex structures.

Method used

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  • Casting and molding method of copper-containing alloy type anti-bacterial stainless steel
  • Casting and molding method of copper-containing alloy type anti-bacterial stainless steel
  • Casting and molding method of copper-containing alloy type anti-bacterial stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 Preparation of mixing blades for sugar-making machinery parts

[0036] 1. Test materials

[0037] (1) The chemical composition of copper-containing alloy antibacterial stainless steel mixing blades is shown in Table 6:

[0038] Table 6 Chemical composition of copper-containing alloy type antibacterial stainless steel mixing blade (Wt%)

[0039] C

Si

Mn

P

S

Cr

Ni

Ti

Cu

0.12-0.25

0.6-1.0

0.5-1.0

≤0.03

≤0.03

17.0-19.0

8.0-10.0

4.0-6.0

1.2-1.8

[0040] (2) The chemical composition of the raw materials for the mixing blade test is shown in Table 7.

[0041] Table 7 Chemical composition of raw materials for mixing blade test (unit: wt%)

[0042] Raw materials

Si

Mn

P

S

C

Cr

Ti

Cu

Ni

Al

Low-carbon steel

0.19

0.41

0.017

0.014

0.20-0.3

Pig iron

1.27

0.17

0.098

≤0.05

4.13

75 ferrosilicon

75.5

0.5

≤0.04

≤0.02

65 ferromanganese

3.65

65.5

≤0.4

0.03

6.6

Ferrochrome

≤1.5

≤0.04

≤0.03

≤0.06

≥63-75

Ferro Ti...

Embodiment 2

[0056] Example 2 Preparation of comb plate for sugar making machinery parts

[0057] The chemical composition of the product and raw materials, the test equipment, and the preparation process are the same as those in Example 1.

[0058] The total amount of alloy is 30kg, and the batching list is shown in Table 11.

[0059] Table 11 Ingredients for comb board test (Wt%)

[0060] Low-carbon steel

Ferrochrome

Ferro Titanium

Nickel

Ferromanganese

Electrolytic copper

11296.8g

8238g

6885.6g

2700g

429.6g

450g

[0061] test results:

[0062] image 3 Table 12 and Table 13 both show that the prepared copper-containing alloy type antibacterial stainless steel comb plate has excellent antibacterial properties, and its mechanical properties are slightly better than ordinary 304 stainless steel.

[0063] Table 12 Test results of antibacterial rate of copper-containing alloy type antibacterial stainless steel comb plate with casting sample prepared by casting molding method

[0064]

[0065...

Embodiment 3

[0067] Example 3 Preparation of friction plate of suction filter for sugar-making machinery parts

[0068] The chemical composition of the product and raw materials, the test equipment, and the preparation process are the same as those in Example 1.

[0069] The total amount of alloy is 30kg, and the batching list is shown in Table 14.

[0070] Table 14 Test ingredients for friction plate of suction filter (Wt%)

[0071] Low-carbon steel

Ferrochrome

Ferro Titanium

Nickel

Ferromanganese

Electrolytic copper

11296.8g

8238g

6885.6g

2700g

429.6g

450g

[0072] Figure 4 It is the metallographic structure diagram of the cast sample of the friction plate of the suction filter. Table 15 and Table 16 are the antibacterial rate and mechanical performance test results of the friction plate of the suction filter. Both show that its antibacterial performance is excellent, and the mechanical properties are slightly better than ordinary 304 stainless steel.

[0073] Table 15 Test results o...

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Abstract

The invention discloses a casting and molding method of copper-containing alloy type anti-bacterial stainless steel. The production process comprises the steps of smelting metals by using a medium-frequency induction furnace with an acid lining, firstly adding low-carbon steel, melting, then adding ferrotitanium, nickel pieces, ferrochrome, ferrosilicon and ferromanganese, finally adding a covering agent, heating to 1650+ / -5 DEG C, completely melting furnace burdens, cooling to 1550-1600 DEG C, adding electrolytic copper, performing deoxygenation and slag removal, performing deoxygenation and slagging-off again in a casting ladle when molten steel is generated, pouring the molten steel into a pre-coated sand casting mold to obtain blanks of parts, and performing thermal treatment on the blanks of the parts to obtain a product. By adopting the method disclosed by the invention, a variety of copper-containing alloy type anti-bacterial stainless steel mechanical parts with complex structures can be prepared by adopting a one-time integrated molding method under the atmospheric environment, and the application field of the anti-bacterial stainless steel can be greatly broadened.

Description

Technical field [0001] The invention belongs to the field of casting molding method of copper-containing alloy type antibacterial stainless steel. Background technique [0002] With the development of the economy and the improvement of people’s living standards, people pay more and more attention to the surrounding environment and their own health. Therefore, they pay more and more attention to food processing, sugar production, pharmaceutical production, tableware and cooking utensils, sanitary equipment, medical equipment, and public facilities. Materials put forward higher requirements, and the call for green processing and green production is becoming stronger. Antibacterial stainless steel is a new type of material that came into being under such a situation. Antibacterial stainless steel is a new type of material developed by the intersection of material science and environmental science. Its characteristic is that the material itself has antibacterial and sterilization pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06B22C9/02B22C9/22C21D6/00
Inventor 苏广才宁广承汤宏群梁兆年张修海杜华就冼满峰
Owner GUANGXI UNIV