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Heat-resistant steel castings ZG35Cr24Ni7SiN
ZG35Cr24Ni7SiN Analysis of precipitation-reinforced heat treatment of heat-resistant steel castings
Due to the increasing demand of ZG35Cr24Ni7SiN heat-resistant steel casting parts, its quality must be guaranteed in order to enhance its market competitiveness. Therefore, it is necessary to continuously improve the wear resistance of heat resistant steel castings, which is an important reason why the casting deposition reinforced heat treatment.
The so-called ZG35Cr24Ni7SiN deposition reinforced heat treatment of heat-resistant steel casting is the main method to eliminate the grains and grain boundary carbide in the cast tissue, improve the strength and toughness of the heat-resistant steel pipe, and expand its strength. Use the scale. The specific method is to obtain a certain amount and size of dispersed carbide second phase particles, on the basis of forming elements, so as to strengthen the austenitic matrix and improve the heat resistance of steel.foundry goods. Wear resistance.
And because the performance of ZG35Cr24Ni7SiN heat resistant steel casting and industrial production and use has a great relationship, in addition to wear resistance, shrinkage also has higher requirements, but its shrinkage is vulnerable to various obstacles, some resistance from the mold, core, some due to the formation of the casting structure itself.
ZG35Cr24Ni7SiN The shrinkage rate of heat resistant steel casting is 2.6% -2.7%, but varies with the size and wall thickness. Usually, the thicker the wall thickness, the stronger the thermal effect of the metal on the mold. When the material loses strength after heating, the shrinkage hole ability of the casting will decrease, and the shrinkage hole in the mold will be larger, so that the shrinkage rate is higher; otherwise, the shrinkage value is low.
ZG3Cr18Mn12Si2N Casting high temperature resistance in about 1000℃, super wear resistance. ZG3Cr18Mn12Si2N Castings suitable for 950℃ long-term use, suitable for all kinds of resistance furnace bottom plate, well furnace basket, tank, grate, box, drum furnace tank, rotary furnace bladder and power station boiler wear-resistant lining plate and other wear-resistant parts.
ZG3Cr24Ni7SiN Casting high temperature resistance in about 1100℃, 1000℃ long-term use performance is more. The performance is better than chromium manganese nitrogen, suitable for making furnace bottom plate, material plate, material basket, etc.
ZG35Cr25Ni20Si2 Casting high temperature resistance is about 1200℃, ZG1Cr25Ni20Si2 casting 1150℃ used for a long time, super performance, superior to nickel seven nitrogen performance, strong corrosion resistance, suitable for manufacturing a variety of heating steel components.
ZG35Cr24Ni7SiNRe Heat-resistant steel castings are supplemented with 0.2-0.3% cerium or lanthanum on 3Cr24Ni7SiN steel foundations. The addition of rare earth obviously changed the performance of the steel at 1100-1200℃, and changed the durable strength of the steel at casting. Change the thermal processing performance, with high high temperature strength, high plasticity and sex, tissue, sulfide resistance and cold and heat, aging brittleness is less than 2Cr25Ni20Si2. At the same time, there are soldability, casting, mainly manufactured in the 950-1200℃ range of various heat resistant components.
The company specializes in the production of heat resistant pressure bearing, corrosion resistant and wear resistant alloy steel pipes and castings. The main products are: heat-resistant steel, high temperature alloy, stainless acid-resistant steel, high temperature resistant stainless steel, heat treatment accessories, centrifugal casting furnace pipe, corrosion resistant steel, thermal strength steel, wear-resistant steel, large diameter stainless steel, ultra-low carbon alloy steel, centrifugal casting thick-wall steel pipe.main products:
1. Heat resistant steel, heat strength steel, high temperature resistant furnace pipe, high temperature resistant alloy steel, stainless steel, wear resistant steel, heat resistant wear resistant steel.
2. Heat treatment accessories: furnace bottom plate, horse-fu can, material basket, wind blade, guide rail, material plate, dry pot, tooling hanger, incubator, etc.
3. Centrifugal casting products: large diameter thick wall heat-resistant steel pipe, stainless steel pipe, alloy steel pipe, production diameter: Φ 75mm-2650mm, single length 6000mm, seamless heat resistant steel pipe, all kinds of high temperature resistant furnace pipe, rotary kiln for powder metallurgy, heat resistant steel furnace bottom roll, glass roller, industrial radiation pipe, wear-resistant conveying pipe, petrochemical cracking pipe, radiation pipe, high temperature vacuum reduction tank, etc.
4. Small-diameter stainless steel pipe. Production outer diameter: Φ 7mm-400mm, wall thickness: 0.6mm- -40mm single length: 9000mm seamless stainless steel pipe
Heat resistant steel castings resistant to superalloy steel castings are: ZG40Cr25Ni20Si2 (American standard 310, HK40), ZG3Cr24Ni7SiNRe, ZG4Cr26Ni4Mn3NRe, ZG3Cr24Ni7SiN, ZG1Cr18Ni9Ti, ZG8Cr26Ni14Mn3N, Rare earth new material heat-resistant steel ZG3Cr24Ni7Si2NRe, ZG4Cr26Ni4Mn3NRe, ZG8Cr33Ni9NRe, ZG4Cr24Ni9Si2NRe)304,316,309,310,310S,1Cr18Ni9Ti, 3Cr24Ni7SiNRe, 2Cr25Ni20Si2, 4Cr25Ni35NbW, 4Cr28Ni48W5Si2, 3Cr26Ni4MnMoRe, etc.ZG4Cr26Ni4Mn3NRe、ZG8Cr26Ni4Mn3NRe、ZG8Cr33Ni9NRe
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