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Specific advantages of liner wear is reflected in what areas?

Source: Editor:Goldpro Visit: Release time: 2014-09-12 14:56:39

1, the high wear resistance chemical composition of the alloy layer of the carbon content is 4-5%, chromium content of up to 25 ~ 30%, the microstructure of Cr7C3 carbide volume fraction of 50% or more, macro-hardness of HRC56 ~ 62 , hardness of chromium carbide HV1400 ~ 1800, higher than the hardness of quartz sand HV800 ~ 1200. Since carbide into distribution in the direction perpendicular to wear, even with the same cast alloy composition and hardness compared to wear more than doubled working principle of ball mill liner. With several typical Abrasiveness comparison is as follows:

(1) and the low-carbon steel; 20 ~ 25:

(2) with a high manganese steel; 5 to 10:

(3) with the tool steel; 5 ~ 10:

(4) with high chromium cast iron; 1.5 to 2.5:

2, good impact resistance: resistant composite steel bottom are low-carbon steel or low alloy. Ductile material such as stainless steel, reflects the superiority of the bimetal, wear-resistant layer of wear resistant abrasive media, the substrate exposed to the medium load, it is good impact resistance. Material handling system can withstand high drop hopper to withstand impact and abrasion.

3, good heat resistance: Wear layer is recommended to use at ≤ 600 ℃ conditions, if the alloy layer was added vanadium, molybdenum and alloys can withstand high temperature of ≤ 800℃. Recommended temperature as follows: Ordinary carbon steel substrate is not recommended to use more than 380 ℃ working conditions; low-alloy heat-resistant steel (15CrMo, 12Cr1MoV, etc.) is not higher than 540 ℃ substrate recommended operating conditions used; resistant stainless steel substrate is not higher than recommended 800 ℃ conditions used.

4, good corrosion resistance, wear-resistant composite steel alloy layer contains a high percentage of chromium, it has some rust and corrosion resistance. Coal drop tube and funnel for other occasions can be done to prevent caking coal.

5, applicability resistant composite steel specifications, has many varieties, has become a commodity serialization. Wear-resistant alloy layer has a thickness 3 ~ 20mm. The thickness of the thinnest composite plate is 6mm, the thickness is not limited. Currently, the standard wear-resistant steel sheet provides 1200 or 1450 × 2000mm, also according to user needs, according to the paper size custom processing. Resistant composite plate are divided into common type, impact resistance and high temperature type, ordered high temperature resistant and impact-resistant composite plate to explain.

6, facilitate processing performance can be cut resistant composite plate, leveling, punching, bending and curling, characteristics of forging production it can be made flat, arc plate, cone and plate, cylinder. Composite panels can cut a good welding into a variety of engineering structures or components. Composite panels can also be pressed into heating touch with complex shapes. Resistant composite plate can be fixed with bolts or welding equipment, replacement and easy maintenance.

 

7, a high price-performance ratio resistant composite plate though manufacturing costs increase, but life improve several times, making the maintenance costs and downtime greatly reduced, its price performance is higher than common materials height of about 2 to 4 times. Greater the amount of material handling, equipment, factories and mines more serious wear and tear, wear-resistant composite plate using the more obvious economic effect.


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