Heat processing technology of high-carbon carbon steel coil rod for steel wire rope

A carbon steel and steel wire rope technology, which is applied in the field of high-carbon carbon steel wire rod heat treatment process for steel wire ropes, can solve the problems of large equipment investment, inability to give full play to the potential of sorbite structure and performance, and environmental pollution.

Inactive Publication Date: 2012-10-10
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Comparing the two processes, the lead-bath isothermally treated wire rod has a uniform sorbite structure layer spacing, and its strong plasticity is better than that of the air-cooled process, but the equipment investment is large and pollutes the environment.
Due to the fact that these current processes are directly isothermal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1 of the present invention: when implementing the high-carbon carbon steel wire rod heat treatment process for a kind of steel wire rope of the present invention, the high-carbon carbon steel wire rod that diameter is 6mm~16.5mm is first treated by traditional method in the prior art After hot-rolling, water cooling, and coiling, when the coiled strip reaches a temperature range of 820°C to 900°C, quickly put the coiled strip into a salt bath at a temperature of 300°C to 480°C, etc. After keeping the temperature for 2 seconds to 40 seconds, put the coiled strip into a salt bath or lead bath with a temperature range of 500 ° C to 600 ° C and keep it at the same temperature for 5 minutes to 15 minutes, then take it out and cool it naturally, so that the steel wire rope can be finished. Use the heat treatment process of high-carbon carbon steel wire rod sorbite, and obtain the wire rod product with a group size of 1mm-2mm and a layer spacing of 10nm-70nm sorbite ...

Embodiment 2

[0010] Embodiment 2: the high-carbon carbon steel wire rod (this wire rod has been formed into the finished product of coiled rod shape after being hot-rolled, passed through water cooling and coiled) that model is 82Bf12.5 in the prior art The finished strips are heated to a temperature of 820°C to 900°C by traditional resistance furnace heating, and kept at this temperature for 10 to 15 minutes, then quickly put them into a 370°C salt bath for 7 seconds, and then quickly Put it in a salt bath at 550°C for 10 minutes and cool it naturally to obtain a wire rod product with a sorbite structure with a group size of 1mm-2mm and an interlayer spacing of 10nm-70nm.

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Abstract

The invention discloses a heat processing technology of a high-carbon carbon steel coil rod for a steel wire rope. The heat processing technology is characterized by comprising the following steps of: carrying out hot rolling, water passing and cooling and coiling on the high-carbon carbon steel coil rod with the diameter of 6mm-16.5mm so as to obtain coil rod; when the prepared coil rod reaches the temperature range of 820 DEG C-900 DEG C, rapidly throwing the coil rod in a salt groove to keep for 2 seconds-40 seconds in salt bath lower than sorbite temperature at constant temperature; and then putting the coil rod into salt bath or lead bath with the sorbite temperature range to keep at constant temperature for 5 minutes-15 minutes, taking out and cooling naturally, thereby completing the heat processing technology of the high-carbon carbon steel coil rod for the steel wire rope. The heat processing technology of the high-carbon carbon steel coil rod for the steel wire rope can effectively refine the sorbite clique size and interlayer spacing and can improve the uniformity of interlayer spacing; and the product has the advantages of high intensity plasticity, excellent fatigue resistance, long service and the like. The heat processing technology of the high-carbon carbon steel coil rod for the steel wire rope has an obvious effect of improving the high plasticity of a coil rod wire material.

Description

technical field [0001] The invention relates to a high-carbon carbon steel wire rod heat treatment process for steel wire ropes, and belongs to the technical field of heat treatment of metal wire rods for steel wire ropes. Background technique [0002] Existing steel wire rope manufacturing process, at first needs to manufacture steel wire and then carry out twisting into strand, finally synthesize into rope. At present, the raw material for manufacturing steel wire is mainly high-carbon carbon steel wire rod, with a diameter of 6-16mm. The wire rod is smelted into ingots, and then hot-rolled into wire rods. Since the cooling method after hot rolling determines the microstructure and mechanical properties of the wire rod, the cooling process after rolling not only has a decisive impact on the structure control and strong plasticity, but also significantly affects the drawing performance of the steel wire and the rope formation of the steel wire The final service performance...

Claims

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Application Information

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IPC IPC(8): C21D9/00C21D1/46C21D1/48
Inventor 梁益龙向嵩梁宇
Owner GUIZHOU UNIV
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