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Method for preparing steel-based copper-alloy thermometal spherical bearing seat blank

A spherical bearing seat, copper alloy technology, applied in the field of special casting, can solve the problems of low production efficiency, poor labor intensity and high temperature working environment, and high production cost

Active Publication Date: 2014-04-16
CRRC QISHUYAN INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the four types of equipment form four high-temperature work areas, and the flow of workpieces and high-temperature materials between each high-temperature work area, the resulting labor intensity and high-temperature work environment are undoubtedly very poor
As can be seen from the above description, the main disadvantages of the prior art preparation methods are high production costs, poor on-site environment, high labor intensity, and low production efficiency.

Method used

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  • Method for preparing steel-based copper-alloy thermometal spherical bearing seat blank
  • Method for preparing steel-based copper-alloy thermometal spherical bearing seat blank
  • Method for preparing steel-based copper-alloy thermometal spherical bearing seat blank

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Experimental program
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preparation example Construction

[0045] The preparation method sequentially includes:

[0046] Perform technological pretreatment on the steel shell 2;

[0047] Fix the pretreated steel shell 2 on the turntable 4 of the vertical centrifugal casting machine with the open end of the steel shell 2 facing upwards, and correct the concentricity of the steel shell 2 and the turntable 4;

[0048] Add process quantities of copper alloy particles and copper gas flux to the inner cavity of the steel shell 2; start the vertical centrifugal casting machine turntable 4 to make the copper alloy particles and copper gas flux cover the inner spherical surface of the steel shell;

[0049] Start the electric induction heating setting 5 to raise the temperature of the steel shell 2 until the copper alloy particles attached to the inner spherical surface of the steel shell 2 are all melted into liquid, then shut down the electric induction heating device 5 and rise and exit the working position;

[0050] The steel shell 2 is cooled; while...

example 1

[0065] Please refer to the attached figure 1 . Preparation of the upper cover of the spherical bearing seat of the large-scale marine combined piston.

[0066] The outline size of the upper cover of the spherical bearing seat: such as Figure 4 Shown. According to the outline size, make a steel shell of corresponding size and shape;

[0067] a ) Ingredients: 6Kg copper alloy particles (a mixture with a particle size of 0.5~1.0mm) and 400g copper gas flux are mixed, and the surface of the above mixture is covered with 30g wood carbon powder.

[0068] b) Casting process: 1) Move from top to bottom into the electric induction heating device 5, 2) Use 60Kw power at 160r / min to heat for 2.5min; 3) Adjust the power to 80Kw and heat for 44min; 4) Adjust the power to 50Kw heating for 5min; 5) Adjust the power to 0Kw, move up the electric induction heating device 5, air cooling for 3 minutes, 6) Introduce cooling water to the cooling water tank 6, and water cooling for 12 minutes. There is...

example 2

[0070] Please refer to the attached figure 2 with image 3 . The outline size of the lower cover of the spherical bearing seat: such as Figure 5 Shown. According to the outline size, make a steel shell of corresponding size and shape;

[0071] a) Ingredients: 6Kg copper alloy particles (a mixture with a particle size of 1.0~1.6mm) and 400g copper gas flux are mixed, and the surface of the above mixture is covered with 30g wood carbon powder.

[0072] b) Casting process: 1) Lower and move into the electric induction heater 5; 2) Use 60Kw power to heat for 2min at a speed of 200r / min; 3) Adjust the power to 80Kw and heat for 46min; 4) Adjust the power to 50Kw and heat for 4.5min 5) Adjust the power to 0Kw and remove the electric induction heating device 5 for air cooling for 3 minutes; 6) The cooling water tank 6 of the rising water cooling device is water cooled for 14 minutes. There is a φ90mm vent hole in the center of the cover plate 1, and the concentricity of the correction...

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Abstract

The invention discloses a method for preparing a steel-based copper-alloy thermometal spherical bearing seat blank which is produced on a vertical centrifugal casting machine comprising an electric induction heating device and a cooling device. The preparation method sequentially comprises the steps that a steel shell of a bearing seat is preprocessed, and the preprocessed steel shell is placed on a rotary table of the vertical centrifugal casting machine; technological quantity of copper-alloy particles are added in the steel shell, and the rotary table is started; the heating device is started for heating to enable the copper-alloy particles to be molten; the steel shell is cooled to enable the molten copper-alloy to be solidified and metallurgically-bonded on the surface of the inner sphere of the steel shell to obtain the steel-based copper-alloy thermometal spherical bearing seat blank. The method has the advantages that the technological procedure is short, device investment is little, manufacturing cost is low, labor intensity is low, and the on-site environment is good.

Description

Technical field [0001] The invention relates to a method for preparing a steel base copper alloy bimetal spherical bearing seat blank, which belongs to special casting technology. Background technique [0002] The steel-base copper alloy bimetal spherical bearing seat involved in the present invention is a bearing seat mainly used for configuration with connecting rods, such as a piston rod bearing seat of a large-scale marine combined piston. This kind of bearing seat should have high wear resistance and high pressure bearing capacity. The steel-based copper alloy bimetallic spherical bearing is an ideal bearing seat for the combined piston rod. [0003] The steel-based copper alloy bimetallic spherical bearing is prepared on the inner spherical surface of a steel shell designed and manufactured according to the structural elements of the spherical bearing by melting and casting a copper alloy layer with a thickness of copper alloy melt metallurgical bonding process, and then by ...

Claims

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Application Information

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IPC IPC(8): B22D13/04B22D13/10B22D19/08B22D19/16
Inventor 唐建达马良支建方李娄明
Owner CRRC QISHUYAN INSTITUTE CO LTD
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