Processing method for high-tenacity metal embedded part in iron casting, embedded part and brake drum

A technology of metal embedded parts and processing methods, applied to brake drums, devices for coating liquid on the surface, coatings, etc., can solve the problems that the strength of brake drums cannot be significantly improved, the toughness is reduced, and the metallographic structure changes. , to achieve the effect of improving comprehensive mechanical properties and service life, improving tensile strength and fatigue strength, and long service life

Inactive Publication Date: 2013-09-18
CHONGQING DIYANG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbon content in cast iron is high, and the reinforcement is carburized under high temperature and high carbon environment, its metallographic structure changes significantly, and the toughness is significantly reduced
Therefore, the strength of the brake drum cast by this method cannot be significantly improved

Method used

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  • Processing method for high-tenacity metal embedded part in iron casting, embedded part and brake drum
  • Processing method for high-tenacity metal embedded part in iron casting, embedded part and brake drum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 The invention relates to a method for treating a high-toughness metal embedded part in an iron casting, which comprises performing anti-carburization treatment on the outer peripheral surface of the high-toughness metal embedded part before casting the iron casting.

[0025] The anti-carburization treatment includes one of electroplating non-ferrous metals and smearing or brushing anti-carburization coatings.

[0026] The treatment method also includes cleaning the high-toughness embedded metal parts before the anti-carburization treatment.

[0027] The cleaning treatment includes one or more of rust removal, oil removal and acid and alkali removal.

Embodiment 2

[0028] Example 2 see figure 1 , a high-toughness metal embedded part used in iron castings, comprising a high-toughness metal embedded part body 1, the outer peripheral surface of the high-toughness metal embedded part body 1 is provided with an anti-carburization protective layer 2.

[0029] The anti-carburization protective layer 2 is a coating formed of non-ferrous metals such as copper or nickel.

[0030] The anti-carburization protective layer 2 of this embodiment may also be a coating formed by an anti-carburization paint.

Embodiment 3

[0031] Example 3 see figure 2 , a brake drum provided with a high-toughness metal embedded part, comprising a brake drum body 3 made of cast iron, the drum wall of the brake drum body 3 is combined with a ring-shaped high-toughness metal embedded part 4 by casting , the outer peripheral surface of the high-toughness metal embedded part 4 is covered with an anti-carburization protective layer 5 .

[0032] The cross-sectional shape of the high-toughness metal embedded part 4 is circular.

[0033] The anti-carburization protection layer 5 is a plating layer formed of non-ferrous metals such as copper or nickel.

[0034] The anti-carburization protective layer 5 of this embodiment may also be a coating formed by an anti-carburization paint.

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Abstract

The invention discloses a processing method for a high-tenacity metal embedded part in an iron casting, the embedded part and a brake drum. The processing method comprises the steps of: carrying out an anti-carburization treatment on the peripheral surface of the high-tenacity metal embedded part before casting the iron casting, wherein the anti-carburization treatment is to electrically plate nonferrous metals or coat an anti-carburization coating; an anti-carburization protective layer is formed on the peripheral surface of the high-tenacity metal embedded part main body; the anti-carburization protective layer is a plating layer made of the nonferrous metals, such as copper or nickel or a coating layer made of the anti-carburization coating; the brake drum comprises a brake drum main body and the annular high-tenacity metal embedded part combined with the brake drum main body through a casting way. The processing method for the high-tenacity metal embedded part in the iron casting, the embedded part and the brake drum have the beneficial effects of avoiding the casting being carburized in the casting process to keep the tenacity efficiently, improving tensile strength and fatigue strength of the iron casting, improving comprehensive mechanical performances and service life of the casting, and achieving long service life and high safety of the brake drum.

Description

technical field [0001] The present invention relates to a strengthening technology of iron castings, in particular to a treatment method for high-toughness metal embedded parts in iron castings, as well as metal embedded parts in iron castings and manufacturing including the metal embedded parts drum. Background technique [0002] Iron castings refer to mechanical parts formed by casting blanks made of cast iron and then machined, or mechanical parts formed directly by precision casting; they are often used as engine blocks, large and medium-sized hydraulic cylinder blocks, and large and medium-sized cylinder blocks. , Vehicle brake drums and equipment bed and other equipment basic parts. Brake drum, also known as brake drum, is an important security component for the safety of motor vehicles, especially trucks. Because it needs to form sufficient braking force with the brake shoe, it needs sufficient strength requirements and also has good wear resistance, so it is usuall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16B22D19/02C25D3/00B05D7/14F16D65/10
Inventor 胡青迪
Owner CHONGQING DIYANG MACHINERY MFG
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