Stainless steel wire rod for standard parts and method for manufacturing same

A technology of stainless steel plate and manufacturing method, applied in the direction of temperature control, etc., can solve the problems of high production cost 304HC, long AOD oxygen decarburization time, high content of precious metal nickel, and achieve good cold working performance, saving nickel resources, and uniform composition. Effect

Inactive Publication Date: 2008-12-31
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 304HC belongs to 18-8 type austenitic stainless steel, because it contains higher precious metal element nickel, making its manufacturing cost higher
[0006] However, the main problems of this material are: (1) hi

Method used

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  • Stainless steel wire rod for standard parts and method for manufacturing same
  • Stainless steel wire rod for standard parts and method for manufacturing same
  • Stainless steel wire rod for standard parts and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] See Table 1 for chemical composition; see figure 1 , After the steel is melted in an electric arc furnace, it is added to the AOD for oxygen decarburization and refining treatment. After that, it is continuously cast into a 160×160 billet; after the surface grinding and finishing treatment, the billet is put into a walking furnace for heating. ℃~1237℃, the soaking zone temperature is 1230℃~1250℃, the billet exit temperature is 1245℃, the total heating time is 3 hours and 14 minutes, and the heating process is shown in Table 2 below.

[0072] Table 1

[0073] Unit: mass percentage

[0074] Reality

apply

example

C

Si

mn

P

S

Ni

Cr

Cu

Fe

1

0.06

0.20

14.35

0.021

0.004

0.97

13.28

2.52

margin

2

0.04

0.11

13.80

0.024

0.003

1.12

13.2...

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PUM

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Abstract

The invention discloses a stainless steel wire rod used on a standard part as well as a manufacturing method, the stainless steel wire rod comprises the compositions, in weight percent: C: 0.03 to 0.08, Si<=0.55, Mn: 13.50 to 15.50, P<0.045, S <0.020, Cr: 12.50 to 14.00, Ni: 0.80 to 1.45, Cu: 1.75 to 3.50, balance Fe and unavoidable impurities. The manufacturing method includes the following steps of: 1. adopting an electric furnace plus an AOD secondary refining process for smelting, and continuous casting to form billet, 2. rolling, with a soaking temperature of between 1220DEG C and 1250DEG C, an initial rolling temperature >=1180DEG C, and a finishing temperature of between 950DEG C and 1050DEG C; 3. solid solution heat treatment, with a solid solution temperature of 1050DEG C+-10DEG C, the heat preservation time of 40 minutes, and the heating time of 30 to 60 minutes, and water cooling after exiting the furnace; and 4. acid washing. The wire rod and the manufacturing method reduce the nickel and chromium content and effectively save the nickel resource, and have greatly reduced costs of steel per ton compared with 304HC, and have excellent cold working performance.

Description

technical field [0001] The invention relates to a stainless steel wire rod and a manufacturing method thereof, in particular to a high-manganese, low-nickel, copper-containing economical stainless steel wire rod for standard parts and a manufacturing method thereof. Background technique [0002] Screws, nuts, screws and other stainless steel standard parts are widely used in various industries. At present, the main steel grade used to make stainless steel standard parts is 304HC. 304HC is an improved type steel based on 18-8 austenitic stainless steel with copper added. species, the mass percentage of its chemical composition is C≤0.05, Si≤1.00, Mn≤2.00, P≤0.045, S≤0.020, Ni 8.00~9.00, Cr 18.00~20.00, Cu 1.50~3.50, and the rest are Fe and impurities. [0003] 304HC belongs to 18-8 type austenitic stainless steel. Because it contains high precious metal element nickel, its manufacturing cost is relatively high. Applying 304HC standard parts regardless of environment and purp...

Claims

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Application Information

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IPC IPC(8): C22C38/58C22C33/04B22D11/00B21B37/74C21D8/06C23G1/08
Inventor 徐松乾骆鸿马宝国刘军占李瀑冯倡敏彭世丹
Owner BAOSHAN IRON & STEEL CO LTD
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