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Production method for truck bolster springs

A production method and bogie technology, applied in the direction of low internal friction springs, springs/shock absorbers, mechanical equipment, etc., can solve the problems of impact resistance, poor durability, affecting the normal use of trucks, and short service life. The effect of excellent impact resistance and durability, long service life and simple process

Inactive Publication Date: 2016-06-15
XISHUI SHENGTONG SPRING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a production method for bogie bolster springs in view of the common problems that current bogie bolster springs have poor impact resistance, poor durability, and short service life, which affect the normal use of trucks.

Method used

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  • Production method for truck bolster springs
  • Production method for truck bolster springs
  • Production method for truck bolster springs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Taking the production of K2 bogie bolster springs as an example, the following steps are included:

[0012] (1) Rolling: The temperature during hot rolling is controlled at 850°C, and the pitch of the spring is adjusted according to production requirements after rolling;

[0013] (2) Stress relief annealing: control the stress relief annealing so that the temperature of the shackle after processing is 820°C; this can eliminate the internal stress formed during rolling, stabilize the spring size, and increase the tensile strength and elastic limit of the wire;

[0014] (3) Standing or strong pressure treatment: Grind the two ends of the spring after stress relief annealing, cut the tail, and then perform standing or strong pressure treatment; it can increase the bearing capacity of the static load of the spring by 25%;

[0015] (4) Surface anti-corrosion treatment: galvanize the surface of the formed spring, paint it with oil or paint, inspect and pack it. This step imp...

Embodiment 2

[0021] Taking the production of K5 bogie bolster springs as an example, the following steps are included:

[0022] (1) Rolling: The temperature during hot rolling is controlled at 920°C, and the pitch of the spring is adjusted according to production requirements after rolling;

[0023] (2) Stress relief annealing: control the stress relief annealing so that the temperature of the shackle after processing is 900°C; this can eliminate the internal stress formed during rolling, stabilize the spring size, and increase the tensile strength and elastic limit of the wire;

[0024] (3) Standing or strong pressure treatment: Grind the two ends of the spring after stress relief annealing, cut the tail, and then perform standing or strong pressure treatment; it can increase the bearing capacity of the static load of the spring by 25%;

[0025] (4) Surface anti-corrosion treatment: galvanize the surface of the formed spring, paint it with oil or paint, inspect and pack it. This step imp...

Embodiment 3

[0031] Taking the production of K6 bogie bolster springs as an example, the following steps are included:

[0032] (1) Rolling: The temperature during hot rolling is controlled at 890°C, and the pitch of the spring is adjusted according to production requirements after rolling;

[0033] (2) Stress relief annealing: control the stress relief annealing so that the temperature of the shackle after processing is 870°C; this can eliminate the internal stress formed during rolling, stabilize the spring size, and increase the tensile strength and elastic limit of the wire;

[0034] (3) Standing or strong pressure treatment: Grind the two ends of the spring after stress relief annealing, cut the tail, and then perform standing or strong pressure treatment; it can increase the bearing capacity of the static load of the spring by 25%;

[0035] (4) Surface anti-corrosion treatment: galvanize the surface of the formed spring, paint it with oil or paint, inspect and pack it. This step imp...

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Abstract

Disclosed is a production method for truck bolster springs. The production method comprises the following steps that (1), rolling is conducted, specifically, the temperature is controlled to be 850-920 DEG C during hot rolling, and after rolling, pitches of the springs are adjusted according to production requirements; (2), stress relief annealing is conducted, specifically, stress relief annealing is controlled, so that the temperature of a machined hook ring is 820-900 DEG C; (3), standing or prestressing treatment is conducted, specifically, the two ends of each spring obtained after stress relief annealing are subjected to grinding and tail-cutting, and then standing or prestressing treatment is conducted; and (4), surface anti-corrosion treatment is conducted, specifically, galvanization is conducted on the surfaces of the formed springs, and the truck bolster springs are obtained after oil coating or painting, examination and packaging. The production method is simple in process, the produced truck bolster springs can fully meet the fatigue test requirements, fatigue fracture and breaking do not occur to the bearing inner circle springs and the bearing outer circle springs after 3*106 times of circulation, the impact resistance and the durability are good, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of springs, in particular to a method for producing bogie bolster springs suitable for rolling stock. Background technique [0002] With the continuous development of my country's transportation industry in the direction of high speed and heavy load, higher requirements are put forward for the fatigue strength of vehicle parts. As a key part of the truck bogie, the bolster spring plays a vital role in realizing the uniform transmission of the vehicle load and alleviating the vibration and impact caused by the uneven line. Impact resistance and durability of bolster springs and service life. The current bogie bolster springs generally have the problems of poor impact resistance, poor durability, and short service life, which brings great trouble to the normal use of trucks. Therefore, a new production method for bogie bolster springs is developed. It is necessary to improve its product performance. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00F16F1/02
Inventor 卢春林
Owner XISHUI SHENGTONG SPRING
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