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Method for producing non-slip back pressure spring for friction plate of large friction press

A friction press and friction plate technology, which is applied in the field of copper spring preparation, can solve the problems of non-continuous work due to slippage, slow heat dissipation, and friction plate slippage, etc., and achieve the effects of high development and application value, convenient installation and use, and simple preparation process.

Inactive Publication Date: 2013-06-05
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once slipping occurs, it will not only accelerate the wear of the friction plate, but more seriously, it will greatly reduce the power transmission efficiency.
Especially in summer, when the temperature is high, heat dissipation is slow, and working for a long time, slipping between the friction plates is more likely to occur
If there are many production orders, it is necessary to arrange three shifts for continuous production, whether it is summer or winter, it is absolutely not allowed to slip and this kind of situation that cannot work continuously

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A kind of preparation method of non-slip back pressure spring of friction plate of large-scale friction press machine working for a long time, comprises the following steps:

[0023] The first step is to determine that the phase transition point of CuZnAl alloy is 60°C;

[0024] The second step selects the CuZnAl alloy whose phase transition point meets the requirements with a thermal analyzer;

[0025] The 3rd step will draw out the qualified CuZnAl alloy with thermal analyzer into a round wire;

[0026] The fourth step is to wind the drawn wire into a spring, then cut it off, and process the two ends of the plane;

[0027] The fifth step is to put the spring processed in the fourth step into the heat treatment furnace, heat it to 836°C, and keep it warm for 18 minutes;

[0028] The sixth step is to take out the spring that has been heated and kept warm in the fifth step, and put it into boiling water at 100°C, and keep it for 26 minutes;

[0029] The ...

Embodiment 2

[0032] Embodiment 2: A kind of preparation method of non-slip back pressure spring of friction plate of large-scale friction press machine working for a long time, comprises the following steps:

[0033] The first step is to determine that the phase transition point of CuZnAl alloy is 61°C;

[0034] The second step selects the CuZnAl alloy whose phase transition point meets the requirements with a thermal analyzer;

[0035] The 3rd step will draw out the qualified CuZnAl alloy with thermal analyzer into a round wire;

[0036] The fourth step is to wind the drawn wire into a spring, then cut it off, and process the two ends of the plane;

[0037] The fifth step is to put the spring processed in the fourth step into the heat treatment furnace, heat it to 837°C, and keep it warm for 19 minutes;

[0038] The sixth step is to take out the spring that has been heated and kept warm in the fifth step, put it into boiling water at 100°C, and keep it for 27 minutes;

[0039] The seve...

Embodiment 3

[0042] Embodiment 3: A kind of preparation method of non-slip back pressure spring of friction plate of large-scale friction press machine working for a long time, comprises the following steps:

[0043] The first step is to determine that the phase transition point of CuZnAl alloy is 62°C;

[0044] The second step selects the CuZnAl alloy whose phase transition point meets the requirements with a thermal analyzer;

[0045] The third step is to draw the qualified CuZnAl alloy into a square wire with a thermal analyzer;

[0046] The fourth step is to wind the drawn wire into a spring, then cut it off, and process the two ends of the plane;

[0047] The fifth step is to put the spring processed in the fourth step into a heat treatment furnace, heat it to 838°C, and keep it warm for 20 minutes;

[0048] The sixth step is to take out the spring that has been heated and kept warm in the fifth step, put it into boiling water at 100°C, and keep it for 28 minutes;

[0049] The seve...

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Abstract

The invention relates to a method for producing a non-slip back pressure spring for a friction plate of a large friction press. The method comprises the following steps of: 1, determining the transformation temperature of copper alloy; 2, selecting the copper alloy with the transformation temperature according with a certain requirement; 3, drawing the copper alloy into a wire; 4, winding the wire into a spring, cutting off the spring, and processing the end face of the spring; 5, putting the spring into a thermal treatment furnace, and heating and preserving the temperature; 6, preserving the temperature for a second stage; and 7, cooling. The production process is simple, low in cost and convenient for assembling and using. The non-slip back pressure spring does not have the slipping phenomenon or cannot continuously work whether in summer or in continuous uninterrupted production in three shifts. Therefore, the method has higher development and application values for practical application.

Description

technical field [0001] The invention relates to a method for preparing a copper spring, in particular to a method for preparing a non-slip back pressure spring of a friction plate of a large friction press that works for a long time. Background technique [0002] The power of the large friction press is transmitted by the friction force between the friction plates, but the friction force between the friction plates comes from the pressure exerted on the friction plates by the ordinary back pressure spring. The friction plate will generate heat due to long-term operation and friction, and the ordinary back pressure spring that applies pressure to the friction plate will also generate heat. As the temperature of friction heat rises, the pressure generated by the ordinary back pressure spring on the friction plates is also decreasing, and the friction force between the friction plates will also drop significantly at this time, so slipping between the friction plates is very eas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
Inventor 耿贵立
Owner SHANDONG UNIV
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