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Process for manufacturing main drive inner core of gasoline economizer for motorcycle

A manufacturing process and technology of fuel economizer, which is applied in the field of manufacturing the main transmission core of motorcycle fuel economizer, can solve the problems of long processing cycle time, complex shape, high product precision, etc., achieve long processing cycle time, improve service life, The effect of simplifying the machining process

Inactive Publication Date: 2010-06-16
SHANDONG CHENGRUI POWDER METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent ZL200820017963.2 and patent ZL200630183803.1 disclose a motorcycle program-controlled two-way fuel saver controlled by electronic electromagnetic technology. Among them, the transmission inner core is the main component, its shape is relatively complex, and the product precision is high. Through steel processing, a variety of processing equipment is required, the processing cycle time is long, and the material utilization rate is low.
For the steel casting method, although the material utilization rate is high, its precision is low, the surface is rough, and almost all surfaces need to be processed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] By weight percentage, graphite powder is 0.5%, micro-wax powder is 0.5%, copper powder is 1.5%, cutting agent manganese sulfide is 0.5%, and iron powder is 97%.

[0016] (1) Mixing: Weigh iron powder, copper powder, cutting agent, graphite powder, and microwax powder according to the above weight percentages, and add them to the conical mixer in sequence, and run for 50 minutes to make these powders mix together evenly;

[0017] (2) Molding: Put the powder mixed in step (1) into the powder press barrel, send the powder into the mold cavity through the automatic feeding box of the press, and mold it under a pressure of 600-800Mpa. Can press 4 pieces per minute;

[0018] (3) Sintering: Sinter the molded body of step (2) through a mesh belt sintering furnace, and sinter for 50 minutes at 1100-1150°C under the protection of hydrogen and nitrogen generated by decomposing ammonia, so that the powder particles can Form a sintered neck, similar to a peanut shape, so that it h...

Embodiment 2

[0026] By weight percentage, graphite powder is 1%, micro wax powder is 1%, copper powder is 5%, cutting agent is 1%, and iron powder is 92%.

[0027] (1) Mixing: Weigh the iron powder, copper powder, cutting agent, graphite powder, and microwax powder according to the above weight percentages, and add them to the conical mixer in order, and run for 30 minutes to make these powders mix together evenly;

[0028] (2) Molding: Put the powder mixed in step (1) into the powder press barrel, send the powder into the mold cavity through the automatic feeding box of the press, and mold it under a pressure of 600-800Mpa. Can press 4 pieces per minute;

[0029] (3) Sintering: Sinter the molded body of step (2) through a mesh belt sintering furnace, and sinter for 30 minutes at 1100-1150°C under the protection of hydrogen and nitrogen generated by decomposing ammonia, so that the powder particles can Form a sintered neck, similar to a peanut shape, so that it has better strength and ha...

Embodiment 3

[0032] By weight percentage, the graphite powder is 0.5%, the micro-wax powder is 0.6%, the copper powder is 1.2%, the cutting agent is 0.5%, and the iron powder is 97.2%.

[0033] (1) Mixing: Weigh the iron powder, copper powder, cutting agent, graphite powder, and micro-wax powder according to the weight percentage, and add them to the conical mixer in order, and run for 60 minutes to make these powders evenly Mix together;

[0034] (2) Molding: Put the powder mixed in step (1) into the powder press barrel, send the powder into the mold cavity through the automatic feeding box of the press, and mold it under a pressure of 600-800Mpa. 5 pieces can be pressed per minute;

[0035] (3) Sintering: Sinter the molded body of step (2) through a mesh belt sintering furnace, and sinter for 60 minutes at 1100-1150°C under the protection of hydrogen and nitrogen generated by decomposing ammonia, so that the powder particles can Form a sintered neck, similar to a peanut shape, so that ...

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Abstract

The invention discloses a process for manufacturing the main drive inner core of a gasoline economizer for a motorcycle. The high-performance main drive inner core of the gasoline economizer for the motorcycle is manufactured with the powder metallurgy process including the material mixing process, the molding process and the sintering process and then with the mechanical processing process, the heat treating process, the surface treating process and the like. In the process of mixing the material, a small number of micronized wax is added to the material to be good for the molding of the work piece, and cutting agent of MnS is added to the material to be convenient for the subsequent mechanical processing of the work piece. The mixed material is molded at the high pressure of 600-800 Mpa so that the molded work piece has high density. The work piece is sintered at high temperature so that the copper powder permeates into the iron powder structure to improve the performance of the parts. In the invention, the material utilization ratio can be more than 95 percent, and the machining amount is less, thus the advantage that less cutting is needed in the powder metallurgy technology is fully reflected. The invention has the advantages of saving the material, simplifying the processing process and prolonging the service life of the work piece.

Description

technical field [0001] The invention relates to a manufacturing process of a mechanical part, in particular to a method for manufacturing a main drive inner core of a motorcycle fuel economizer by adopting a powder metallurgy process. Background technique [0002] With the rise of gasoline prices and the global demand for energy saving and emission reduction, it is imperative for automobiles, motorcycles and other motor vehicles to adopt certain measures to save fuel and reduce emissions. However, the development of internal combustion engines has basically matured, and it is very difficult to reduce fuel consumption from the aspects of increasing compression ratio and improving thermal efficiency, and there is also a hidden danger of increasing nitrogen oxide emissions, so it is not suitable to implement. Utilizing the running inertia and downhill potential energy of the motorcycle to slide is an existing recognized and effective fuel-saving method. Patent ZL200820017963.2...

Claims

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Application Information

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IPC IPC(8): B22F5/10B22F3/16F16D41/00
CPCY02T10/76
Inventor 吕玉科张峰李国平
Owner SHANDONG CHENGRUI POWDER METALLURGY
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