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Stainless steel material of copper alloy and manufacturing process

A technology of stainless steel and copper alloy, which is applied in the field of hardware materials, can solve the problems of difficulty in application popularization and popularization, the decline of surface quality of stainless steel materials, and the decline of toughness of stainless steel materials, etc. The effect of mechanical strength

Inactive Publication Date: 2017-05-17
新昌县优优机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the tensile strength, it is necessary to reduce the number of heat treatments to increase the amount of cold deformation. However, after large cold deformation of austenitic stainless steel materials, the martensitic phase transformation of the alloy will be induced, and a large number of hard and brittle intermetallic phases will be formed. As a result, the surface quality of the drawn stainless steel material decreases, and the elongation rate under high strength will be very low, especially the toughness of the stainless steel material decreases and the brittleness increases, which has caused a lot of problems for the popularization and promotion of the application of austenitic stainless steel materials in hardware products. Relatively big difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A copper alloy stainless steel material, the weight percentage of each component of the material is as follows: C 0.03%, Si 0.6%, Cr14.5%, Mn 8.2%, Mo 1.5%, Al 0.4%, Ni 5%, N 0.12% , the balance being Fe and unavoidable impurities.

[0019] The preparation method of the high-strength stainless steel material used for hardware products described in this embodiment, the steps are as follows:

[0020] 1) Weigh each component of the alloy according to the weight percentage, and use a vacuum induction furnace to smelt under a nitrogen protective atmosphere. The smelting process is: baking, 10Kw, 4 minutes; melting, 80Kw, 15 minutes; refining, 20Kw, 20 Minutes, the vacuum degree after refining is 1Pa; finally, the temperature is adjusted and cast to obtain a vacuum cast rod;

[0021] 2) The vacuum casting rod is remelted into an ingot by electroslag, and the ingot is heated to 1150°C in a heating furnace, and the holding time is 170 minutes;

[0022] 3) After step 2) is com...

Embodiment 2

[0026] A copper alloy stainless steel material, the weight percentage of each component of the material is as follows: C 0.04%, Si 0.65%, Cr14.6%, Mn 8.3%, Mo 1.7%, Al 0.5%, Ni 6%, N 0.15% , S 0.01%, the balance is Fe and unavoidable impurities.

[0027] The preparation method of the high-strength stainless steel material used for hardware products described in this embodiment, the steps are as follows:

[0028] 1) Weigh each component of the alloy according to the weight percentage, and use a vacuum induction furnace to smelt under the protective atmosphere of nitrogen. The smelting process is: baking material, 10Kw, 5 minutes; melting, 80Kw, 16 minutes; refining, 22Kw, 21 Minutes, the vacuum degree after refining is 2Pa; finally, the temperature is adjusted and cast to obtain a vacuum cast rod;

[0029] 2) Vacuum cast rods are remelted into ingots by electroslag, and the ingots are heated to 1160°C in a heating furnace, and the holding time is 180 minutes;

[0030] 3) Afte...

Embodiment 3

[0034] A copper alloy stainless steel material, the weight percentage of each component of the material is as follows: C 0.05%, Si 0.69%, Cr14.7%, Mn 8.4%, Mo 1.8%, Al 0.7%, Ni 6.5%, N 0.15% , the balance being Fe and unavoidable impurities.

[0035] The preparation method of the high-strength stainless steel material used for hardware products described in this embodiment, the steps are as follows:

[0036] 1) Weigh each component of the alloy according to the weight percentage, and use a vacuum induction furnace to smelt under a nitrogen protective atmosphere. The smelting process is: baking, 10Kw, 5 minutes; melting, 80Kw, 18 minutes; refining, 25Kw, 23 Minutes, the vacuum degree after refining is 1Pa; finally, the temperature is adjusted and cast to obtain a vacuum cast rod;

[0037] 2) Vacuum casting rods are remelted into ingots by electroslag, and the ingots are heated to 1165°C in a heating furnace, and the holding time is 190 minutes;

[0038] 3) After step 2) is co...

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Abstract

The invention discloses a stainless steel material of copper alloy. The stainless steel material comprises the following components in percentages by weight: 0.03-0.06% of C, 0.6-0.8% of Si, 14.5-15.0% of Cr, 8.2-8.6% of Mn, 1.5-2.0% of Mo, 0.4-0.9% of Al, 5-8% of Ni, 0.12-0.18% of N, less than or equal to 0.01% of P, less than or equal to 0.01% of S and the balance of Fe and inevitable impurities. The invention further discloses a preparation method of a high-strength stainless steel material for hardware. The stainless steel material prepared in the invention has good mechanical strength, the yield strength of the stainless steel material can reach 813-850 Mpa, the tensile strength can reach 1,075-1,100 Mpa, performance is excellent, and widespread application and popularization and use of the stainless steel material in the hardware can be promoted.

Description

technical field [0001] The invention relates to the technical field of hardware materials, in particular to a copper alloy stainless steel material and a manufacturing process. Background technique [0002] Traditional hardware products, also known as "hardware". Refers to the five metals of gold, silver, copper, iron, and tin. After manual processing, it can be made into works of art or metal devices such as knives and swords. Hardware in modern society is more extensive, such as hardware tools, hardware parts, daily hardware, construction hardware and security supplies. Stainless steel is a commonly used material for making hardware products. Stainless steel materials can generally be divided into three types, namely austenitic stainless steel materials, ferritic stainless steel materials and martensitic stainless steel materials. In order to improve the tensile strength, the number of heat treatments must be reduced to increase the amount of cold deformation. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/58C22C38/44C22C38/06C22C33/04C21D8/02C21D1/26
CPCC22C38/02C21D1/26C21D8/0226C21D8/0236C21D2211/008C22C33/04C22C38/001C22C38/06C22C38/44C22C38/58
Inventor 潘小良
Owner 新昌县优优机械有限公司
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