precise custom made Silicon Nitride Ceramic Structural Parts
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Silicon Nitride Ceramics:
Due to the different uses of Silicon Nitride ceramic products, the processing technology and the quality requirements of the raw materials are also different. Generally speaking, different stainless steel products require different thickness tolerances of raw materials. For example, the thickness tolerances of the second type tableware and vacuum flasks are generally higher, which is -3~5%, while the thickness tolerances of the first type tableware are generally required- 5%, steel pipe category requires -10%, hotel refrigerator material thickness tolerance is -8%, dealers generally require thickness tolerance between -4% and 6%. At the same time, the difference between the internal and external sales of products will also lead to the different requirements of customers on the thickness tolerance of the raw materials. Generally, customers of export products have higher requirements for thickness tolerances, while domestic sales companies have relatively low requirements for thickness tolerances (mostly due to cost considerations), and some customers even require -15%.
① DDQ (deep drawing quality) material: refers to the material used for deep drawing (punching) purposes, which is what everyone calls soft material. The main feature of this material is higher elongation (≧53%) and higher hardness. Low (≦170%), the internal grain grade is between 7.0 and 8.0, and the deep drawing performance is excellent. Many companies that produce thermos flasks and pots generally have relatively high product processing ratios (BLANKING SIZE/product diameter), and their processing ratios are 3.0, 1.96, 2.13, and 1.98, respectively. SUS304DDQ materials are mainly used for these products that require a higher processing ratio. Of course, products with a processing ratio of more than 2.0 generally require several passes of stretching to complete. If the extension of the raw materials cannot be achieved, the products are prone to cracks and pull-through phenomena when processing deep-drawn products, which affects the qualified rate of finished products, and of course increases the cost of the manufacturer;
②General materials: Mainly used for materials other than DDQ applications. This material is characterized by relatively low elongation (≧45%), and relatively high hardness (≦180HB), and the internal grain size grade is 8.0~9.0 Compared with DDQ materials, its deep drawing performance is relatively poor. It is mainly used for products that can be obtained without stretching, such as spoons, spoons, forks, electrical appliances, steel pipes and so on. But it has an advantage compared with DDQ material, that is, the BQ property is relatively better, which is mainly due to its slightly higher hardness.
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.
