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Cylinder with double metal extruders and preparation method of cylinder

A technology of bimetal and machine barrel, which is applied in the field of plastic processing, can solve the problems of unstable product quality and short service life of the barrel, and achieve the effects of sensitive response to the temperature of the barrel, saving processing costs, and high processing accuracy

Pending Publication Date: 2019-01-25
苏州艾盾合金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the defects of short service life and unstable product quality of the barrel of the screw extruder in the prior art, the present invention proposes a barrel of a bimetallic extruder and a preparation method thereof

Method used

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  • Cylinder with double metal extruders and preparation method of cylinder

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preparation example Construction

[0032] The invention provides a method for preparing a bimetal extruder barrel, which specifically includes the following steps:

[0033] (1) Provide a cylinder base; in order to form the alloy according to the shape of the cylinder base, it is necessary to add a set of inner molds concentric with the cylinder base in the cylinder, and seal the bottom end, the inner mold and the cylinder base The gap between them should be calculated and determined according to the designed coating thickness; and in order to prevent the moisture and impurities on the surface of the substrate from affecting the combination of the alloy and the substrate, the surface of the substrate and the inner mold must first be thoroughly cleaned and dried;

[0034] (2) In order to prevent the alloy from sticking to the inner mold after sintering, brush a layer of high-temperature release agent on the surface of the dried inner mold, and assemble it with the cylinder base after the inner mold is fully dried;...

Embodiment 1

[0048] The preparation of embodiment 1 bimetal extruder barrel

[0049] Nickel-based alloy powder is selected, and its chemical composition is B: 2.5%, C: 0.7%, Cr: 15%, Si: 3.8%, Fe: 14%, W: 0.5%, Ni: 63.5%; the powder specification is 140 / 325 mesh, hardness HRC55. Type 75 is selected as the base body of the cylinder, the diameter of the inner hole is the size of the finished product plus 3.6mm, and the surface roughness is Ra1.6um. The inner mold is designed and processed according to the size of the inner hole. Specifically include the following steps:

[0050] (1) Substrate cleaning: Provide a cylinder substrate and inner mold, and thoroughly clean the surface of the cylinder substrate and inner mold;

[0051] (2) Mold assembly: Brush a layer of high-temperature-resistant paint on the surface of the inner mold, and assemble it with the cylinder base after it is fully dried;

[0052] (3) Powder filling: pour nickel-based alloy powder into the gap between the inner mold ...

Embodiment 2

[0056] The preparation of embodiment 2 bimetal extruder barrel

[0057] Nickel-based alloy powder is selected, and its chemical composition is B: 3.5%, C: 0.9%, Cr: 16%, Si: 4.5%, Fe: 13.0%, W: 5.0%, Ni: 57.1%; the powder specification is 140 / 325 mesh, hardness HRC61. Type 75 is selected as the base body of the cylinder, the diameter of the inner hole is the size of the finished product plus 3.6mm, and the surface roughness is Ra1.6um. The inner mold is designed and processed according to the size of the inner hole. Specifically include the following steps:

[0058] (1) Substrate cleaning: Provide a cylinder substrate and inner mold, and thoroughly clean the surface of the cylinder substrate and inner mold;

[0059] (2) Mold assembly: Brush a layer of high-temperature-resistant paint on the surface of the inner mold, and assemble it with the cylinder base after it is fully dried;

[0060] (3) Powder filling: pour nickel-based alloy powder into the gap between the inner mol...

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Abstract

The invention discloses a cylinder with double metal extruders and a preparation method of the cylinder. The cylinder with the double metal extruders comprises a cylinder base body and an alloy layerarranged on the inner wall of the cylinder base body, and the cylinder base body and the alloy layer are combined into a whole by adopting a powder metallurgy mode; and the alloy layer is formed by sintering nickel-based alloy powder and cobalt-based alloy powder. The preparation method has the advantages that the wear-resisting anti-corrosive alloy layer is directly manufactured on the inner wallof the cylinder base body, and the technical problems that a cylinder in the prior art is short in service life and unstable in product quality are solved; the service life of the alloy cylinder is 6-8 times of that of a common C-shaped alloy pipe cylinder, the processing charges of a neck bush is omitted, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of plastic processing, in particular to a bimetal extruder barrel and a preparation method thereof. Background technique [0002] As plastic products are more and more widely used in people's production and life, plastic product companies have an increasing demand for plastic particles, and at the same time, the functions of plastics are becoming more and more abundant. Auxiliaries, some of these auxiliaries are quite high in hardness, and some have strong corrosiveness, which has a great impact on the cylinder of ordinary materials, making the wear and corrosion of the cylinder particularly serious, and the service life Quite briefly. [0003] There are two main types of cylinders currently on the market: [0004] One type is that two C-shaped alloy tubes are inlaid in the cylinder, and the C-shaped tubes are joined together to form an "8" shape. This type of cylinder has a gap of about 0.5-0.8mm at the s...

Claims

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Application Information

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IPC IPC(8): B22F7/04B22F3/10B22F1/00C22C19/05C22C19/07C22C30/00
CPCB22F1/0003C22C19/056C22C19/058C22C19/07C22C30/00B22F3/1007B22F7/04B22F2998/00B22F2007/042B22F2201/20
Inventor 王新贵彭刚君康建明
Owner 苏州艾盾合金材料有限公司
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