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Material for placing chromium plating of oil supply head operation oil pipe of hydropower station and construction process for placing chromium plating of oil supply head operation oil pipe of hydropower station with material

A technology for operating oil pipes and oil receivers. It is applied in the coating process and coating of metal materials. It can solve problems such as deformation, environmental pollution, and large amounts of waste water, and achieve excellent wear resistance, improved hardness levels, and good matching. Effect

Inactive Publication Date: 2019-05-21
CHINA YANGTZE POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of electroplating is low, the hardness is high, and it has strong wear resistance. However, a large amount of wastewater will be generated during the electroplating process, which seriously pollutes the environment. The country has banned its use.
And the operating tubing is a hollow tailored weldment, if automatic welding is used, it will cause deformation

Method used

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  • Material for placing chromium plating of oil supply head operation oil pipe of hydropower station and construction process for placing chromium plating of oil supply head operation oil pipe of hydropower station with material
  • Material for placing chromium plating of oil supply head operation oil pipe of hydropower station and construction process for placing chromium plating of oil supply head operation oil pipe of hydropower station with material
  • Material for placing chromium plating of oil supply head operation oil pipe of hydropower station and construction process for placing chromium plating of oil supply head operation oil pipe of hydropower station with material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 DLF103B: Fe 75.5384%, Cr 17.2563%, Ni 4.3286%, Mo 1.3739%, Mn 0.9949%, Cu 0.1771%, and Ti 0.1428%.

Embodiment 2

[0032] Example 2 DLF104B: Fe 80.1102%, Cr 16.2808%, Ni 1.8473%, Mo 1.0505%, Mn 0.2140%, Ti 0.1611%, and Cu 0.1236%.

[0033] The construction method for chrome-plating the operating oil pipe of the oil receiver of a hydropower station using the above-mentioned materials includes the following steps:

[0034] 1) Remove the fatigue layer and the old chrome plating layer of the operating tubing; the fatigue layer can be removed by grinding with a CW61125F horizontal lathe. When removing the fatigue layer, use lathe grinding to remove the original chrome plating layer, but the amount of unilateral removal shall not be less than 0.5mm.

[0035] 2) Using the above cladding materials, laser cladding equipment is used for surface cladding; the thickness of single layer cladding is 0.85mm. Single-layer cladding or multi-layer cladding can be used as required. During the cladding process, control parameters of laser cladding equipment are used: laser power 0.83-0.9KW, discharge curren...

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Abstract

The invention discloses a material for placing chromium plating of an oil supply head operation oil pipe of a hydropower station and a construction process for placing chromium plating of the oil supply head operation oil pipe of the hydropower station with the material. The material is prepared from the following components in parts by weight: 65-85 parts of iron, 15-20 parts of chromium, 1-5 parts of nickel, 1-3 parts of molybdenum and smaller than 1.5 parts of the total content of manganese, copper and titanium. After the material provided by the invention is subjected to process treatment,the traditional processes of chrome plating, spraying and the like can be replaced, so that the original size and shape of a part are restored, and the part has the surface characteristic not lower than the original performance. After laser cladding treatment is adopted, a cladding layer has better wear resistance and corrosion resistance and is high in bonding strength with a base material, andthe cladding layer and an interface thereof are compact in tissue and fine in crystal grain and have excellent mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of laser cladding, and in particular relates to a material and a construction process for replacing the chrome plating of an oil receiver operating oil pipe of a hydropower station. Background technique [0002] There are many types and large quantities of large-scale mechanical parts in hydropower stations, and their procurement costs are high and the procurement cycle is long. When a failure occurs, if there is no new spare part to replace it in time, the equipment will not be restored in time, resulting in loss of power generation. [0003] The surface of the operating oil pipe of the oil receiver of the hydropower station is chrome-plated, and the traditional electroplating process is required in the manufacturing process. The cost of electroplating is low, the hardness is high, and it has strong wear resistance. However, a large amount of wastewater will be generated during the electroplating process, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/04C22C38/42C22C38/44C22C38/50
Inventor 徐进胡成学吴江秦岩平
Owner CHINA YANGTZE POWER
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