Unlock instant, AI-driven research and patent intelligence for your innovation.

High strength steel strand process

A high-strength steel and stranded wire technology, applied in the high-strength steel strand process and the high-strength steel strand field, can solve the problems of inability to reach 2400MPa, insufficient strength and tensile strength, etc., and achieve high production efficiency and good treatment effect. Effect

Inactive Publication Date: 2019-02-01
浙锚科技股份有限公司
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-strength steel strand process, which solves the defect that the tensile strength of the steel strand prepared by the existing steel strand is not enough and cannot reach 2400MPa

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High strength steel strand process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of high-strength steel strand technology provided by the invention, steel strand adopts 98Si high-carbon hypereutectoid steel to make, comprises the following steps:

[0026] 1) Surface treatment: Remove the hot-rolled scale and clean the material wire; then enter the cleaning tank for cleaning, pickling tank for pickling, then enter the phosphating equipment for phosphating treatment, and finally enter the drying equipment for drying to obtain pretreatment wire. During the phosphating operation, the phosphating temperature is 50° C., and the phosphating time is 50 minutes.

[0027] 2) Quenching and tempering: heat the wire at 860±20°C for 15-20s, then cool down to 520°C to form a wire rod, preheat and keep it for 15-20min;

[0028] 3) Salt bath: the wire rod passes through the salt bath cooling tank, the temperature of the salt bath tank is set at 500-520°C and kept warm for 1-1.2min, and the wire rod with uniform temperature after spinning is rap...

Embodiment 2

[0034] Embodiment 2: a kind of high-strength steel strand technology provided by the invention, steel strand adopts 98Si high-carbon hypereutectoid steel to make, comprises the following steps:

[0035] 1) Surface treatment: Remove the hot-rolled scale and clean the material wire; then enter the cleaning tank for cleaning, pickling tank for pickling, then enter the phosphating equipment for phosphating treatment, and finally enter the drying equipment for drying to obtain pretreatment wire. During the phosphating operation, the phosphating temperature is 50-55° C., and the phosphating time is 5-10 minutes.

[0036] 2) Quenching and tempering: heat the wire at 860±20°C for 15-20s, then cool down to 520°C to form a wire rod, preheat and keep it for 15-20min;

[0037] 3) Salt bath: the wire rod passes through the salt bath cooling tank, the temperature of the salt bath tank is set at 500-520°C and kept warm for 1-1.2min, and the wire rod with uniform temperature after spinning i...

Embodiment 3

[0043] Embodiment 3: a kind of high-strength steel strand technology provided by the invention, steel strand adopts 98Si high-carbon hypereutectoid steel to make, comprises the following steps:

[0044] 1) Surface treatment: Remove the hot-rolled scale and clean the material wire; then enter the cleaning tank for cleaning, pickling tank for pickling, then enter the phosphating equipment for phosphating treatment, and finally enter the drying equipment for drying to obtain pretreatment wire. During the phosphating operation, the phosphating temperature is 50-55° C., and the phosphating time is 5-10 minutes.

[0045] 2) Quenching and tempering: heat the wire at 860±20°C for 15-20s, then cool down to 520°C to form a wire rod, preheat and keep it for 15-20min;

[0046]3) Salt bath: the wire rod passes through the salt bath cooling tank, the temperature of the salt bath tank is set at 500-520°C and kept warm for 1-1.2min, and the wire rod with uniform temperature after spinning is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Yield forceaaaaaaaaaa
Yield forceaaaaaaaaaa
Yield forceaaaaaaaaaa
Login to View More

Abstract

The invention provides a high strength steel strand process. A steel strand is made from 98Si high carbon hypereutectoid steel. The process comprises the following steps: 1) tempering: heating a wirerod at 860+ / -20 DEG C for 15-20 s first, then cooling the wire rod to 520 DEG C to form a steel wire rod, and preheating and insulating the steel wire rod for 15-20 minutes; 2) salt bath: feeding thesteel wire rod to a salt bath cooling tank, setting the temperature of the salt bath cooling tank at 500-520 DEG C and insulating the salt bath cooling tank for 1-1.2 minutes, and quickly cooling theuniform temperature steel wire rod after spinning through fused salt in vacuum; and 3) cleaning: cleaning the steel wire rod from a salt bath isothermobath through a cleaning groove, controlling the cleaned steel wire rod at 400-450 DEG C, and drying the steel wire rod which is cleaned. The steel strand is made from 98Si high carbon hypereutectoid steel which is tempered, treated in the salt bathand cleaned, so that the strength of the steel strand is improved greatly and reaches 2400 MPa; the steel strand breaks through limitation of water bath of an existing steel strand; meanwhile, the existing steel strand cannot be treated with the salt bath. By arranging the tempering process, the steel strand passes through the salt bath in an overspeed manner, so that the treatment effect of the steel strand is good and the production efficiency is high.

Description

technical field [0001] The invention relates to the field of steel strand production, in particular to a high-strength steel strand process and the high-strength steel strand. Background technique [0002] On the long-span line, in order to resist the long self-weight and the complex natural environment, the tensile strength of the conductor must be increased to achieve the best combination of tensile force and weight ratio. Only by increasing the tensile strength can both the tensile strength be improved. The dual purpose of reducing its own weight. The so-called big span, as the name suggests, is the need to cross a large span, often across a large river, mountain, etc., and its special features are its characteristics. For large-span lines, it is required to use extra-high-strength steel strands, the tensile strength of galvanized steel wires before stranding is ≥1910MPa, and the tensile strength after stranding is greater than or equal to 1815MPa; it is even required to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B21C37/04C21D1/25
CPCB21C37/04C21D1/25
Inventor 周成顺曾利宋强
Owner 浙锚科技股份有限公司