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Process for manufacturing flanged half shaft from steel pipe

A steel pipe and process technology, which is applied in the manufacturing process of automobile axle shafts and in the field of automobile manufacturing, can solve problems such as not conforming to the development trend of lightweight, and achieve the effects of improving labor productivity, reducing weight, reducing impact and pollution

Inactive Publication Date: 2019-03-19
WANFANG COLLEGE OF SCI & TECH HPU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102672436 A, CN 103568722 A, and CN 106392469 A all disclose the processing and manufacturing process of common half shafts. These half shafts are all traditional forged half shafts. The half shafts described in the above patents are all solid half shafts, although they can meet the rigidity , strength requirements, but does not meet the development trend of lightweight

Method used

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  • Process for manufacturing flanged half shaft from steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] ⑴Steel tube blanking: Through calculation, on the 40Cr steel tube with an outer diameter of φ40mm, an inner diameter of φ16mm, and a thickness of 12mm, cut a steel tube with a length of 1090mm to blank the half shaft.

[0024] (2) Spline pier thickness: Heat one end of the steel pipe with a length of 150mm in a 500kW intermediate frequency induction coil. When the temperature reaches the forging temperature of 900-1200°C, use a φ40mm×70mm mold to pier the heated end of the steel pipe. The thick length is 70mm.

[0025] (3) Pendulum milling flange: heat the other end of the steel pipe with a length of 240 mm in an intermediate frequency induction coil with a power of 500 kW. When the temperature reaches the forging temperature of 900-1200 ° C, use a special mold to perform pendulum milling on the steel pipe once to form a flange The prototype of the disc is then reheated. When it is heated again to 900-1200°C, it is rolled again in a special mold. Finally, the thickness ...

Embodiment 2

[0038] ⑴Steel tube blanking: Through calculation, on the 42CrMo steel tube with an outer diameter of φ60mm, an inner diameter of φ22mm, and a thickness of 19 mm, cut a steel tube with a length of 1375mm to blank the half shaft.

[0039] (2) Spline pier thickness: Heat one end of the steel pipe with a length of 250mm in a 500kW intermediate frequency induction coil. When the temperature reaches the forging temperature of 900-1150°C, use a φ62mm×110mm mold to pier the heated end of the steel pipe. The thick length is 110mm.

[0040] (3) Pendulum milling flange: heat the other end of the steel pipe with a length of 230mm in an intermediate frequency induction coil with a power of 500kW. When the temperature reaches the forging temperature of 900-1150°C, use a special mold to pendulum mill the steel pipe once to form a flange The prototype of the disc is then reheated. When it is heated again to 900-1150°C, it is rolled again in a special mold. The thickness of the flange plate of...

Embodiment 3

[0053] ⑴Steel tube blanking: Through calculation, on the 45MnB steel tube with an outer diameter of φ60mm, an inner diameter of φ22mm, and a thickness of 19 mm, cut a steel tube with a length of 1273mm to blank the half shaft.

[0054] (2) Spline pier thickness: Heat one end of the steel pipe with a length of 240mm in a 500kW intermediate frequency induction coil. When the temperature reaches the forging temperature of 900-1150°C, use a φ60mm×110mm mold to pier the heated end of the steel pipe. The thick length is 110mm.

[0055] (3) Pendulum milling flange: heat the other end of the steel pipe with a length of 220mm in an intermediate frequency induction coil with a power of 500kW. When the temperature reaches the forging temperature of 900-1150°C, use a special mold to pendulum mill the steel pipe once to form a flange The prototype of the plate is then reheated. When it is heated again to 900-1150°C, it is rolled again in a special mold. The thickness of the flange plate of...

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Abstract

The invention provides a process for manufacturing a flanged half shaft from a steel pipe. The process comprises the following steps of (1) pipe blanking; (2) spline upsetting; (3) flange rocking rolling; (4) hardening and tempering treatment; (5) end cap welding; (6) shot blasting correction; (7) half shaft rough turning; (8) spline rolling; (9) half shaft finish turning; (10) flange drilling; (11) induction quenching, specifically, conducting surface induction quenching on a half shaft and then conducting tempering through a pit furnace; (12) shot blasting correction; (13) internal and external flaw detection; and (14) general inspection and warehousing, specifically, conducting inspection, packaging and warehousing on the finished half shaft. The hollow half shaft provided by the invention has remarkable economic benefits and is especially suitable for production and manufacturing of passenger car half shafts.

Description

technical field [0001] The invention relates to the field of manufacturing technology of automobile half shafts, in particular to a manufacturing technology of using steel pipes to make hollow half shafts with flanges for small passenger cars, and belongs to the field of automobile manufacturing. Background technique [0002] The lightweight of the car is to reduce the curb weight of the car as much as possible under the premise of ensuring the strength and safety performance of the car, so as to improve the power of the car, reduce fuel consumption, and reduce exhaust pollution. Experiments have proved that if the weight of the vehicle is reduced by 10%, the fuel efficiency can be increased by 6%-8%; for every 100 kg of vehicle curb weight reduction, the fuel consumption per 100 kilometers can be reduced by 0.3-0.6 liters; the weight of the vehicle is reduced by 1%, and the fuel consumption can be reduced by 0.7 %. At present, due to the needs of environmental protection a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 王艳丽师珺草蒋建军郑喜平肖软生
Owner WANFANG COLLEGE OF SCI & TECH HPU