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Manufacturing technology of transmission shaft tube

A technology of manufacturing process and transmission shaft tube, which is applied in the field of transmission shaft tube manufacturing process, can solve the problems of hot-rolled coil wall thickness difference, bottleneck difficult to improve, etc., and achieve the effect of good surface quality, high product strength and uniform wall thickness

Active Publication Date: 2014-02-19
无锡苏嘉法斯特汽车零配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the bottleneck of product dynamic balance and strength in the transmission shaft tube is on the welded pipe in the middle of the transmission shaft, and it is difficult to improve the bottleneck due to the influence of the wall thickness difference and actual strength of the hot-rolled coil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: A manufacturing process of a transmission shaft tube, comprising the following process steps:

[0016] (1) Cut the steel coil with a thickness of 2.5 mm×width 1280 mm and a material of 440QZ into a strip steel with a width of 200 mm. The wall thickness tolerance of the strip steel is ±0.10mm, the yield strength is 430MPa, and the tensile strength is 470MPa, elongation 25%;

[0017] (2) Pickling: Pass the steel strip successively through the pickling tank, cold water tank, and hot water tank. The pickling liquid in the pickling tank is hydrochloric acid, and the concentration of hydrochloric acid is 120 g / L; High-pressure water flushing, the flushing temperature is 10°C, and the flushing pressure is 10kg / cm 2 The temperature of the hot water tank is 90°C; the speed of strip steel passing through the pickling tank, cold water tank and hot water tank is 30 m / min, and it is dried at 100°C, and the drying speed is 30m / min; rust oil rewinding;

[0018] (3) Th...

Embodiment 2

[0022] Embodiment 2: A manufacturing process of a drive shaft tube, comprising the following process steps:

[0023] (1) Cut the steel coil with a thickness of 2.5 mm×width 1280 mm and a material of 440QZ into a strip steel with a width of 400 mm. The wall thickness tolerance of the strip steel is ±0.10mm, the yield strength is 500MPa, and the tensile strength is 550MPa, elongation 25%;

[0024] (2) Pickling: Pass the steel strip successively through the pickling tank, cold water tank, and hot water tank. The pickling liquid in the pickling tank is hydrochloric acid, and the concentration of hydrochloric acid is 160 g / L; High-pressure water flushing, the flushing temperature is 30°C, and the flushing pressure is 10kg / cm 2 The temperature of the hot water tank is 100°C; the speed of strip steel passing through the pickling tank, cold water tank and hot water tank is 40 m / min, and it is dried at 120°C, and the drying speed is 40 m / min; Anti-rust oil winding;

[0025] (3) The ...

Embodiment 3

[0029] Embodiment 3: A manufacturing process of a transmission shaft tube, comprising the following process steps:

[0030] (1) Cut the steel coil with a thickness of 2.5 mm×width 1280 mm and a material of 440QZ into a strip steel with a width of 300 mm. The wall thickness tolerance of the strip steel is ±0.10mm, the yield strength is 480MPa, and the tensile strength is 500MPa, the elongation rate is 20%;

[0031] (2) Pickling: Pass the steel strip successively through the pickling tank, cold water tank, and hot water tank. The pickling liquid in the pickling tank is hydrochloric acid, and the concentration of hydrochloric acid is 150 g / L; High-pressure water flushing, the flushing temperature is 20°C, and the flushing pressure is 9kg / cm 2 The temperature of the hot water tank is 95°C; the speed of the strip steel through the pickling tank, cold water tank, and hot water tank is 35 m / min, and it is dried at 110°C, and the drying speed is 35m / min; rust oil rewinding;

[0032...

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Abstract

The invention relates to a manufacturing technology of a transmission shaft tube, which is characterized by comprising the following technical steps: (1) shearing a steel rolled plate into band steel, (2) allowing the band steel to pass through a pickling tank, a cold water tank and a hot water tank sequentially and continuously, applying rust preventing oil after drying, and rolling up, (3) cold-rolling the pickled band steel with a rolling mill, and allowing the thickness of the cold-rolled band steel to be the required product thickness minus 0.05-0.10mm, (4) rolling the band steel on a welding machine, welding into a straight welding steel tube with the welding power of 70-190KW and the welding speed of 10-18m / min, (5) dogging one end of the straight welding steel tube in a dogging machine to allow the diameter of the end of the steel tube to reach the required dimension, sequentially immersing the dogged steel tube in a phosphorization pool and a saponification pool, and (6) performing secondary cold drawing on the steel tube on a chain work tube drawing bench with a short mandril to achieve the required dimension. The transmission shaft tube obtained by the technology is more uniform in wall thickness, better in surface quality and higher in product strength.

Description

technical field [0001] The invention relates to a manufacturing process of a transmission shaft tube, belonging to the technical field of mechanical manufacturing. Background technique [0002] With the development of the economy, people's living standards are constantly improving, and people's requirements for the running speed and comfort of vehicles are also constantly improving. The continuous improvement of vehicle running speed also intensifies the vibration generated when the train is running; at the same time, the demand for lightweight vehicles also requires higher and higher material strength. In this case, the market has higher and higher requirements for the dynamic balance and strength of drive shaft products. At present, the bottleneck of product dynamic balance and strength in the transmission shaft tube is on the welded pipe in the middle of the transmission shaft, and it is difficult to improve this bottleneck due to the influence of the wall thickness diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C3/02
Inventor 龚育才俞峰
Owner 无锡苏嘉法斯特汽车零配件有限公司
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