reaction machinery Silicon Nitride ceramic frame support bar
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Silicon Nitride Ceramic:
Silicon Nitride Ceramics can also significantly reduce the cold work hardening tendency of austenitic stainless steels. This is mainly due to the increased stability of austenite, which reduces or even eliminates the martensite transformation during the cold working process. At the same time, the cold working of austenite itself The hardening effect is not obvious. The effect of cold work hardening tendency of stainless steel. Nickel reduces the cold work hardening rate of austenitic stainless steel, reduces the room temperature and low temperature strength of the steel, and improves the plasticity, which determines that the increase in nickel content is beneficial to the austenite stainless steel The cold working formability of steel, increasing the nickel content can also reduce or even eliminate the δ ferrite in the 18-8 and 17-14-2 chromium-nickel austenitic stainless steels, thereby improving its hot workability. However, the δ ferrite’s Reducing the unfavorable weldability of these steels will increase the tendency of welding hot cracks. In addition, nickel can significantly improve the hot workability of chromium-manganese-nitrogen (chromium-manganese-nickel-nitrogen) austenitic stainless steel, thereby significantly improving the quality of steel. In the austenitic stainless steel, the addition of nickel and the increase in the nickel content lead to the increase of the thermodynamic stability of the steel. Therefore, the austenitic stainless steel has better rust resistance and resistance to oxidizing media. With the increase of silicon nitride content, the performance of resistance to reducing media is further improved. It is worth pointing out that nickel is the only important element to improve the resistance of austenite stainless to many dielectric trans-crystalline stress corrosion. In various acid media, nickel has an effect on austenite. The influence of the corrosion resistance of the stainless steel, it is necessary to point out that under some conditions in high temperature and high pressure water, the increase of nickel content leads to the increase of the intergranular stress corrosion sensitivity of steel and alloy, but this adverse effect will be due to steel and alloy. The increase in chromium content is reduced or suppressed.
properties:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Data Sheet↓
Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(m.K)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er
Volume Resistivity(20°C): 1.0*10(12)Ω.cm
Application industry:
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Specific application:
Welding shaft, electronic substrate, Ceramic Plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
