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Online thermal treatment, acid pickling and phosphating process of medium and high-carbon superfine steel wire for rope making

A pickling phosphating, medium-high carbon technology, applied in the field of metallurgy, can solve problems such as limited equipment capacity, achieve the effects of reducing the consumption of phosphating solution, reducing costs, and improving production efficiency

Inactive Publication Date: 2015-02-04
天津市新天钢中兴盛达有限公司
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  • Abstract
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Problems solved by technology

However, due to the limited equipment capacity of the enterprise, it is necessary to realize the production of various specifications and various steel products on one production line

Method used

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  • Online thermal treatment, acid pickling and phosphating process of medium and high-carbon superfine steel wire for rope making
  • Online thermal treatment, acid pickling and phosphating process of medium and high-carbon superfine steel wire for rope making
  • Online thermal treatment, acid pickling and phosphating process of medium and high-carbon superfine steel wire for rope making

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with specific examples.

[0015] The on-line heat treatment pickling and phosphating process of medium and high carbon ultra-fine specification steel wire used for rope making in the present invention is suitable for the specification of φ0.8-1.3mm, and the steel type is high-quality carbon structural steel 45# steel, SWRH47A, SWRH62A, high-quality carbon structure For steel 65# steel and SWRH 72A products, the mass fraction of carbon content of each steel type is shown in Table 1.

[0016] Carbon content% (mass fraction) of each steel type Table 1

[0017] 45#

47A

62A

65#

72A

0.455～0.487

0.470～0.499

0.619～0.659

0.635～0.697

0.731～0.752

[0018] The on-line heat treatment pickling and phosphating process of medium and high carbon superfine steel wire for rope making includes the following steps: wire setting → steel wire heating + lead po...

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Abstract

The invention discloses an online thermal treatment, acid pickling and phosphating process of a medium and high-carbon superfine steel wire for rope making. The process is suitable for the production of the products which have diameters of phi 0.8-1.3mm and which are of types of high-quality carbon structural steel 45#, SWRH47A and SWRH62A and high-quality carbon structural steel 65# and SWRH72A on a same production line, and is capable of reducing the energy consumption and the consumption of the main accessories in the production process. In a steel wire heating step, a four-stage heating manner is used and the furnace temperature is respectively set to be 900 DEG C, 885 DEG C, 870 DEG C and 855 DEG C; in a lead pan isothermal cooling step, the lead temperature is set to be 565 DEG C, and the DV value is 63mm.m / min; and in the phosphating process, the phosphating temperature is 85+ / -5 DEG C, the total acidity is 80-90, the free acidity is 12-16 and the acid ratio is 5-8. Through setting the optimal acid pickling and phosphating process parameters, the obtained product steel wire for rope making is capable of obtaining favorable mechanical property after undergoing drawing, and meanwhile, the energy consumption is reduced and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of metallurgy technology, in particular to a kind of steel wire for making ropes, the specification of which is φ0.8-1.3mm, and the steel types are high-quality carbon structural steel 45# steel, SWRH47A, SWRH62A, high-quality carbon structural steel 65# steel , SWRH 72A on-line heat treatment pickling and phosphating process for steel wire with medium and high carbon ultra-fine specifications for rope making. Background technique [0002] The heat-treated phosphating steel wire for rope making is a reworked steel wire, which is made into a steel wire rope of a certain structure and specification through processes such as drawing, twisting, and tying. Therefore, the internal quality and surface phosphating quality of the heat-treated phosphating steel wire for rope making It directly affects the quality of the post-processing process and the quality of the finished wire rope. [0003] In recent years, with the contin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/52C23G1/08C23C22/73
CPCC21D9/525C23C22/73C23G1/08
Inventor 王文喜吕春国杨志强蔺秀艳李永迪张广友张洪洋杨波
Owner 天津市新天钢中兴盛达有限公司
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