Lining plate and preparation method thereof

A liner and cermet technology, which is used in grain processing, coating, additive processing, etc., can solve the problems of unsatisfactory toughness and strength of liner, shortened service life of liner, and poor anti-corrosion performance of liner. Achieve the effect of increasing application value, improving performance, and alleviating thermal stress

Inactive Publication Date: 2017-01-04
四川中久红宇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the practical application of the lining board, the physical performance requirements of the lining board are also relatively high. For example, its wear resistance, toughness and corrosion resistance are important indicators that need to be investigated in the actual use process, but the general anti-corrosion performance of the lining board is not good. However, due to the corrosion of oxides and acid gases during application, the actual service life of the liner will be shortened, and other physical properties of the liner such as toughness, strength and other indicators are not very ideal, which indirectly limits its application value and scope of use. will also be subject to corresponding restrictions

Method used

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  • Lining plate and preparation method thereof

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Effect test

Embodiment 1

[0032] The preparation method of the liner is as follows:

[0033] Mix 10g of chromium, 5g of silicon, 30g of iron, 5g of carbon, 30g of nickel, 1g of molybdenum, and 1g of tungsten to make a cermet mixed powder with a mesh size of 200 mesh or more, and use a 3D printer to generate high-energy particle beams to achieve cermet mixing Powder fusion with an energy density of 90J / mm for the high-energy particle beam 2 , the laser melting time is 2 minutes. After the melting is completed, the cermet is sprayed on the steel surface of the liner substrate with a 3D printer to form a dense cermet layer, which is integrally formed without splicing gaps and has stronger stability.

Embodiment 2

[0035] The preparation method of the liner is as follows:

[0036] Mix 30g of chromium, 12g of silicon, 40g of iron, 13g of carbon, 40g of nickel, 2g of molybdenum, and 2g of tungsten to make a cermet mixed powder with a mesh size of 300 mesh. The mixing rate is controlled at 300rad / min, and a 3D printer is used to produce high-energy particles. The beam realizes the melting of metal-ceramic mixed powder, and the energy density of the high-energy particle beam is 100J / mm 2 , the time of laser melting is 3min. After the melting is completed, the cermet is sprayed onto the steel surface of the liner substrate with a 3D printer to form a dense cermet layer. The thickness of the cermet layer is 1.6mm. From the inside to the outside, it is composed of three layers of metal layer, metal-ceramic composite layer, and ceramic layer. It is integrally formed, without splicing gaps, and has stronger stability.

Embodiment 3

[0038] The preparation method of the liner is as follows:

[0039] Mix 15g of chromium, 7g of silicon, 32g of iron, 6g of carbon, 30g of nickel, 1.2g of molybdenum, and 1.2g of tungsten to make a cermet mixed powder with a mesh size of 200 mesh. The mixing rate is controlled at 100rad / min, and it is produced by a 3D printer. The high-energy particle beam realizes the melting of metal-ceramic mixed powder, and the energy density of the high-energy particle beam is 120J / mm 2 , the laser melting time is 2.5min. After the melting is completed, the cermet is sprayed onto the steel surface of the liner substrate by a 3D printer to form a dense cermet layer. The thickness of the cermet layer is 1.7mm. From the inside to the outside, it is composed of ceramic layer, metal-ceramic composite layer and metal layer. It is integrally formed, without splicing gaps, and has stronger stability.

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Abstract

The invention provides a lining plate. The lining plate comprises a lining plate matrix; the surface of the lining plate matrix is coated with a metal ceramic layer with a gradient structure; in parts by mass, the metal ceramic layer is formed by spraying the following main raw materials through a 3D printer: 10-30 parts of chromium, 5-12 parts of silicon, 30-40 parts of iron, 5-13 parts of carbon, 30-40 parts of nickel, 1-2 parts of molybdenum, and 1-2 parts of tungsten. A preparation method of the lining plate comprises the following steps: (A) all raw materials for preparing the metal ceramic layer are mixed uniformly to form mixed powder; and (B) after high-energy particle beams generated by the 3D printer perform the laser melting for the mixed powder, the 3D printer is adopted to spray the surface of the lining plate matrix. The lining plate greatly improves such physical performances as corrosion resistance, toughness and strength, and is excellent in stability.

Description

technical field [0001] The invention relates to the field of liner processing, in particular to a liner and a preparation method thereof. Background technique [0002] The main application of the liner is to protect the cylinder from the direct impact and friction of the grinding body and the material. At the same time, different forms of liner can be used to adjust the movement state of the grinding body to enhance the grinding body's impact on the material. The crushing effect helps to improve the grinding efficiency of the mill, increase the output and reduce the metal consumption. It can be seen that the liner has a wide range of applications and can be widely used in various mechanical equipment. [0003] In view of the practical application of the lining board, the physical performance requirements of the lining board are relatively high. For example, its wear resistance, toughness and corrosion resistance are important indicators that need to be investigated in the a...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C29/06B02C17/22B33Y10/00B33Y70/00
CPCC23C24/103B02C17/22B33Y10/00B33Y70/00C22C29/06
Inventor 鲁伟员李信杨义乐
Owner 四川中久红宇科技有限公司
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