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Coating material and coating with high contact fatigue strength based on 304 stainless steel base material

A technology of 304 stainless steel and coating materials, applied in the field of high contact fatigue strength coating materials and coatings, can solve the problems of insufficient production capacity, complicated preparation process, high cost, etc., and achieve improved contact fatigue strength, simple preparation process and low cost cheap effect

Inactive Publication Date: 2015-08-26
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, coating materials that improve the contact fatigue properties of the substrate surface are rarely reported, and traditional coatings are usually prepared by vacuum smelting, which makes the preparation process complicated, high in cost, and insufficient in production capacity

Method used

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  • Coating material and coating with high contact fatigue strength based on 304 stainless steel base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Coating material formula: Ni powder: 8%; Cr powder: 10%; Si powder: 9%; Mn powder: 32%; 2 o 3 Powder: 0.8%; C powder: 1%; the balance is reduced iron powder.

[0030] The preparation method of the coating material: add the 304 stainless steel ball milling medium with a ball-to-material ratio of 10:1 and the powder described in the formula into a 304 stainless steel ball mill pot, carry out ball milling for 5 hours, and the ball milling speed is 150r / min to obtain product A; Vacuum drying was performed at 120° C. for 1 hour to obtain a coating material.

Embodiment 2

[0032] Coating material formula: Ni powder: 10%; Cr powder: 7%; Si powder: 15%; Mn powder: 27%; 2 o 3 Powder: 1.2%; the balance is reduced iron powder.

[0033] The production method of the coating material: add the 304 stainless steel ball milling medium with a ball-to-material ratio of 10:1 and the powder described in the formula into a 304 stainless steel ball mill pot, carry out ball milling for 4 hours, and the ball milling speed is 180r / min to obtain product A; Vacuum drying was carried out at 100° C. for 1.5 h to obtain a coating material.

Embodiment 3

[0035] Coating material formula: Ni powder: 5%, Cr powder: 14%, Si powder: 6%, Mn powder: 35%, La 2 o 3 Powder: 0.4%, C powder: 2%, and the balance is reduced iron powder.

[0036] The preparation method of coating material: the agate ball milling medium that ball-to-material ratio is 10:1 and the powder described in formula add agate ball mill jar, carry out ball milling 6h, ball milling speed 120r / min, get A product; Then A product is in 150 Under vacuum drying for 0.8h at °C, the coating material was obtained.

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Abstract

The invention discloses a coating material and coating with high contact fatigue strength based on a 304 stainless steel base material. The coating material comprises the following components in percentage by weight: 3-15% of Ni powder, 5-15% of Cr powder, 4-18% of Si powder, 20-40% of Mn powder, 0.1-2% of La2O3 powder, 0-3% of C powder, and the balance of reduced iron powder. The coating material is prepared through the following steps: mixing the powder, adding ball milling mediums and mixed powder into a ball milling pot for ball milling, and then performing vacuum drying and processing at 120 DEG C for 1 h so as to obtain the coating material. The coating is prepared through the following steps: grinding the surface of the 304 stainless steel base material level, paving the coating material on the surface of the 304 stainless steel base material, and performing fusion covering by using complete laser heat treatment equipment so as to obtain the coating with high contact fatigue strength. The coating material and the coating, disclosed by the invention, are higher in contact fatigue strength, simple in preparation technology, and low in building cost, and can be produced in batches.

Description

technical field [0001] The invention relates to a high contact fatigue strength coating material and a coating, in particular to a high contact fatigue strength coating material and a coating based on a 304 stainless steel base material. Background technique [0002] 304 stainless steel is a common material in stainless steel, with a density of 7.93g / cm 3 , also known as 18 / 8 stainless steel in the industry, is resistant to high temperatures of 800 degrees, has the characteristics of good processing performance and high toughness, and is widely used in industrial industries. However, in some applications, important parts such as large gears and rails have high requirements for surface contact fatigue strength due to long-term rolling alternating stress, and there is no effective way to repair failed parts. Therefore, it is necessary to add a layer of coating on the surface. layer to increase its contact fatigue strength. [0003] Traditional coating materials can be roughl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/58C22C30/00B22F1/00B22F9/04
Inventor 徐鹏刘其斌张玲琰姜晶晶朱益志
Owner GUIZHOU UNIV
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