Processing Technology of Chromium Carbide Coating by Slag Method

Release time:

2022-12-14 13:35

Source:

The processing technology of chromium carbide coating by slag method is to place the sample with carbon content to be coated in the slag composed of a certain temperature, and the slag component is reflected in the middle of the slag component according to multi-component, resulting in chromium carbide to produce the vitality molecule of the original chromium. The active molecules reach the surface of the sample according to the spread, and fuse with the oxygen atoms on the surface of the substrate to be coated through adsorption and chemical changes, resulting in chromium carbide adhering to the surface of the substrate. With the treatment, the carbon source in the substrate continuously spreads to the surface of the carbide alluvial and combines with the adsorbed active chromium molecules, so that the alluvial slowly thickens, and then produces a chromium carbide coating with a certain thickness on the surface of the sample. The treatment method has the characteristics of simple operation, low price, well-proportioned coating and low air pollution.

Chromium carbide coating has high hardness, wear resistance and good corrosion resistance. Under the same fatigue life, the effect load of coated plate is increased by 120MPa compared with that of uncoated plate.

Application of natural conditions: wear-resistant pipe wear-resistant elbow internal structure of the transport material for pulverized coal particles, there is a strong wash; normal operating temperature of 120 ℃ ~ 160 ℃.

Supply products and performance indicators

1. Basic size: DN2300600 * 18*1500(m), in which the outer edge aperture is 2300m, and the lower aperture is 600m

The relative height is 1500mm.

Plan of eccentric reducer (enterprise mm:mm)2. Material specification of eccentric reducer: the inner cavity is raw material, and the surface is surfacing wear-resistant layer

Hard overall surface: C:4.1%4.5%Cr:21% 25%

3. After surfacing welding, the surfacing surface shall be kept neat and smooth. It has good physical properties and can be used for corresponding laser cutting and electric welding. The welding seam at the joint of the plate shall be produced and processed to ensure weldability. Equipment in the development of laser cutting, welding welding

There should be no drop-off of the surfacing layer in the link.

4. After the completion of the production, low-temperature tempering at 550 ℃ is required to remove the in-situ stress of the coil, so as to ensure that there is no relatively large amount in the use of laser cutting on the spot.

5. One set is divided equally according to the relative height of the cone, the upper part is divided equally into 8 parts, the lower part is divided equally into 6 parts, and 14 pieces are counted equally, I .e. the natural conditions of each piece are: the internal structure of wear-resistant pipe fittings is pulverized coal; Normal operating temperature is 120 ℃ and 160 ℃.

Wear-resistant steel pipe surfacing composite wear-resistant pipe

Wear-resistant steel pipe surfacing composite wear-resistant pipe has been widely used in industrial industries (steelmaking plants, power plants, chemical plants, non-ferrous plate coal industry, etc.), model: 20# KTMCR26. For China's machinery and equipment, workpiece wear failure has brought important wear-resistant safeguard measures, improve the use of machinery and equipment, product parts, for the development of enterprises to improve work efficiency, reduce costs have made great contributions.