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A wear-resistant screw and its manufacturing method

A production method and screw technology, which are applied in the field of screw production, can solve the problems of short service life and poor wear resistance of the screw, and achieve the effects of low production cost, good wear resistance and increased yield

Active Publication Date: 2021-01-15
浙江精制机械有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the screw made by this manufacturing method has poor wear resistance and short service life, so this manufacturing method needs further improvement

Method used

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  • A wear-resistant screw and its manufacturing method
  • A wear-resistant screw and its manufacturing method
  • A wear-resistant screw and its manufacturing method

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Embodiment Construction

[0027]The present invention will be further described in detail below with reference to the embodiments of the drawings.

[0028]Such asFigure 1 to Figure 4As shown, the wear-resistant screw of this embodiment includes a rod body 1 and a wear-resistant layer 5. The wear-resistant layer 5 is a FeNiCrB alloy layer; the wear-resistant layer 5 is uniformly and concentrically melted on the surface of the rod body 1; the FeNiCrB The composition ratio of the FeNiCrB alloy used in the alloy layer is as follows: per 100 parts of FeNiCrB alloy, 8-15 parts of chromium, 8-10 parts of nickel, 3-4 parts of boron, and the rest of iron, the above are parts by weight. The thickness of the FeNiCrB alloy layer is 100-250 μm. The FeNiCrB alloy is added with borax to accelerate the melting speed of the alloy, and 4-6 parts of borax are added to every 100 parts of the FeNiCrB alloy, and the parts are parts by weight.

[0029]The manufacturing method of the wear-resistant screw according to the above formula in...

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Abstract

An abrasion-resisting bolt comprises a bolt body (1) and an abrasion-resisting layer (5) which is a FeNiCrB alloy layer. The abrasion-resisting layer (5) is evenly and concentrically molten on the surface layer of the bolt body (1). According to the composition proportion of FeNiCrB alloy adopted by the FeNiCrB alloy layer, every 100 parts of the FeNiCrB alloy contain, by weight, 8-15 parts of Cr,8-10 parts of Ni, 3-4 parts of B and the balance Fe. The abrasion-resisting bolt has the advantages that the abrasion-resisting layer is arranged on the outer surface of the bolt body and can improvethe abrasion performance of a thread edge and a spiral groove and prolong the service life of the abrasion-resisting bolt; the bolt body is subjected to quenching processing in the process of addingthe abrasion-resisting layer, the surface is more uniform and denser, the center of gravity is more stable in the using process, and eccentric breaking is not prone to occurring; the bolt is processedin steps, operation of the steps is simple, automatic operation can be achieved, operation precision is improved, drawing size requirements are met, the using effect is good, the tolerance range is gradually narrowed and finally meets the drawing requirements, processing difficulty is reduced, and the rate of finished products is increased correspondingly.

Description

Technical field[0001]The invention relates to the technical field of screw manufacturing, in particular to a wear-resistant screw and a manufacturing method thereof.Background technique[0002]There is an existing Chinese invention patent application with the application number CN201310703986.4 titled "High wear resistance iron boride alloy screw element for twin screw machine and its manufacturing method" discloses a high wear resistance boron for twin screw machine The iron-boride alloy screw element includes a body and an iron-boride alloy layer; the iron-boride alloy layer is uniformly and concentrically melted on the surface of the body, and the overall thickness of the iron-boride alloy layer is 50-150 μm; the body is made of high chromium and high carbon Die steel, the die steel is Cr12MoV. The high wear resistance iron boride alloy screw element for twin screw machines provided by the invention provides a twin screw machine with high wear resistance for plastics, LED, cable, f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C48/505B23P15/00
CPCB23P15/00
Inventor 周建军
Owner 浙江精制机械有限公司
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