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

Automobile torsion rod spring annealing process

A technology of torsion bar spring and annealing process, applied in manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of wasting manpower, material and financial resources, prolonging product manufacturing cycle, limited capacity of annealing furnace, etc., reducing annealing costs, cooling Good effect and easy to operate effect

Inactive Publication Date: 2013-08-21
江苏省宿迁市方圆机械有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the capacity of the annealing furnace is limited. Generally, each furnace can only hold about 150 pieces. It takes 4 hours to heat from room temperature to a certain temperature (about 850°C), keep it warm for 1 hour, and then cool down with the furnace for 4 hours. In this way, only 2 furnaces can be processed per day. , prolonging the manufacturing cycle of the product, wasting manpower, material and financial resources

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The lime pool is 4m long and 2m wide, the thickness of lime particles is 80mm, and the thickness of lime powder is 230mm. During the annealing process, the end of the automobile torsion bar spring is directly heated to 1100°C for upsetting. After upsetting, the temperature just drops to 900°C. ℃, and then quickly inserted into the lime powder in the lime pond to keep warm naturally and cool down slowly.

Embodiment 2

[0014] The lime pool is 4m long and 3m wide, the thickness of lime particles is 90mm, and the thickness of lime powder is 250mm. During the annealing process, the end of the automobile torsion bar spring is directly heated to 1100°C for upsetting. After upsetting, the temperature just drops to 900°C. ℃, and then quickly inserted into the lime powder in the lime pond to keep warm naturally and cool down slowly.

Embodiment 3

[0016] The lime pool is 6m long and 3m wide, the thickness of lime particles is 80mm, and the thickness of lime powder is 280mm. During the annealing process, the end of the automobile torsion bar spring is directly heated to 1200°C for upsetting. After upsetting, the temperature just drops to 950°C. ℃, and then quickly inserted into the lime powder in the lime pond to keep warm naturally and cool down slowly.

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an automobile torsion rod spring annealing process. The automobile torsion rod spring annealing process comprises the following steps of: directly heating the end part of an automobile torsion rod spring to 1100 DEG.C in an annealing process for upsetting, wherein the temperature is just reduced to about 900 DEG C after upsetting; and then, rapidly inserting the spring into a lime pit, naturally preserving heat of the spring and slowly cooling the spring, wherein lime particles are laid on the bottom of the lime pit, lime powder is laid on the upper part of the lime pit, the thickness of the lime particles is 80mm-90mm, the thickness of the lime powder is 230mm-280mm, and the lime pit is 4m-6m long and 2m-3m wide. Since rest heat in the heating and upsetting process of the automobile torsion rod spring is adopted in the whole annealing process, the automobile torsion rod spring after upsetting is directly inserted into the lime pit to be naturally preserved with heat and slowly cooled without external heat and a special annealing furnace, so that the efficiency is improved, and the annealing of 600 automobile torsion rod springs can be finished in one lime pit.

Description

technical field [0001] The invention relates to an annealing process, in particular to an annealing process for an automobile torsion bar spring. Background technique [0002] The torsion bar spring is an elastic part that uses the torsional deformation of the torsion bar. Upsetting is the first process of processing the button bar spring, and then it needs to be annealed, that is, the torsion bar spring is heated to an appropriate temperature (850°C About), keep warm for a certain period of time (more than 1 hour), and then cool with the furnace heat treatment process. Its main purpose is: reduce the hardness of steel, improve plasticity, in order to facilitate cutting; refine the grain, uniform structure and composition of steel, improve the performance of steel, and prepare for future heat treatment; eliminate residual internal stress in steel , to prevent deformation and cracking. However, the capacity of the annealing furnace is limited. Generally, each furnace can on...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/02C21D1/26
Inventor 陈爱武池永邱绍虎
Owner 江苏省宿迁市方圆机械有限公司