Feed processing puffing machinery screw machining method

A processing method and feed processing technology, applied in the field of mechanical processing, can solve problems such as difficulty in meeting requirements, and achieve the effects of simple processing method, stable performance and high service life

Inactive Publication Date: 2015-05-20
汪明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The screw transports powdered feed in the expansion cavity, and accompanied by high-temperature steam, the screw works at a temperature of about 160°C for a long time. It must not only be wear-resistant, but also heat-resistant and corrosion-resistant. The scraping and grinding of the puffing cavity, but the general processing method is difficult to meet the requirements

Method used

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Effect test

Embodiment Construction

[0020] The screw processing method of feed processing and extruding machinery of the present invention comprises the following steps:

[0021] The first step, material preparation: round bar material is used, the blank is forged, and the runout of the outer diameter is checked;

[0022] The second step, heat treatment, stress relief annealing, eliminate the internal stress of the blank;

[0023] The third step is blanking, cutting a length of forged bar;

[0024] The fourth step is to drill and drill the center hole;

[0025] The fifth step is heat treatment, quenching and tempering treatment, improving the mechanical properties of the material, increasing the processing energy, so as to obtain the tempered sorbite structure, and block ferrite should not appear on the surface of the workpiece, otherwise it will cause brittle detachment of the nitrided layer;

[0026] The sixth step is turning, turning the two ends and the outer circle, and retaining an appropriate machining ...

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PUM

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Abstract

The invention relates to the field of machining, in particular to a feed processing puffing machinery screw machining method. The method includes the following steps that materials are prepared, round rod materials are adopted, forging treatment is conducted on blanks, and outer diameter beating degree check is conducted; heat treatment is conducted, stress relief annealing is conducted, and the internal stress of the blanks is eliminated; blanking is conducted, a segment of the forged rob materials of a certain length is cut; drilling is conducted, and a center hole is drilled; heat treatment is conducted, quenching and tempering are conducted, the mechanical performance of materials is improved, the machining energy is improved, tempered sorbite texture is obtained, granular ferrite should not be generated on the surface of a workpiece, and if granular ferrite is generated, nitrided case frangibility falling off is caused; turning is conducted, turning is conducted on two end faces and an excircle, and appropriate working allowance is kept; hexagon cutting is conducted, hexagonal holes are cut through a linear cutting machine, and size accuracy and the degree of symmetry are guaranteed; the machining method is simple and high in production efficiency, and a produced and machined screw is stable in performance, resistant to wear, resistant to heat, resistant to corrosion, reliable in quality and long in service life.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a feed processing puffing mechanical screw processing method. Background technique [0002] Extruded feed is currently the mainstream product for artificial feeding of livestock, poultry and aquatic animals. As a nuclear equipment for feed processing, the extruder has been paid more and more attention by people, especially the screw, which is the core component of the extruder, the processing of different feeds has a great impact on its wear and tear. In order to make the extruder suitable for processing different feeds, the processing technology of the extruder screw is particularly important. The screw transports powdered feed in the expansion cavity, and accompanied by high-temperature steam, the screw works at a temperature of about 160°C for a long time. It must not only be wear-resistant, but also heat-resistant and corrosion-resistant. The scraping and grinding of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 汪明
Owner 汪明
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