air pressure thermal shock resistant Si3N4 bar stick
평판은 품질에 따라 다르고 품질은 어려운 일입니다!
Silicon Nitride Ceramic:
Liquid phase sintering is to add A1203 and Y 203 to the silicon carbide powder. After molding, it is sintered at 1800 °C to 2000 y. In the sintering process, A1z team and Y203 form eutectic compound YAG (aluminum garnet Y3Ali [ )) melting point 1760 ° C), the appearance of liquid phase promotes the sintering of Sic and Boron Nitride Ceramic reduces the sintering temperature. Abrasive water jet drilling ceramic technology research compared with cutting processing, drilling processing does not need to consider the influence of nozzle feed rate, processing There are two main problems in the process of relatively simple drilling processing: one is the control of the roughness of the hole wall and the size of the hole; the other is that due to the Zirconia Ceramic Rings divergence of the abrasive water jet, the hole formed by the machining will have a certain degree of inclination. Wan Qingfeng Through experiments, it can be concluded that the larger jet pressure, smaller nozzle traverse speed and proper abrasive flow can effectively increase the drilling depth and improve the quality of the hole wall. However, due to the jet divergence, the hole wall presents a certain taper and points. For the smooth drilling area and the deformation wear area, when the hole being machined is a blind hole, the bottom Machinable Ceramic part will be blocked by the [water pad", and the bag-like structure will be formed. The mathematical method is used to establish the prediction model of drilling depth and surface roughness of the hole wall. The research status and progress of the abrasive water jet processing ceramics respectively. The abrasive holes can be used to ream the existing holes. However, there is no relevant research literature in China. Subsequent research can be applied to the research of reaming processing technology to further broaden the application of abrasive water jet drilling.
속성 :
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(mK)
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, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
왜 우리를 선택 했습니까? 1.12 년의 전문 생산 산업 세라믹 공장 2. 저렴한 가격의 고품질 제품 3. 내성이 가장 낮은 정밀 부품 4. 생산 시간 5. 경험이 풍부하고 전문적이며 효율적인 R & D 팀의 그룹입니다. 6. 중국과 해외에서는 좋은 명성을 얻었습니다. 7. MOQ는 제한되지 않으며 소량을 환영합니다.
8. 활력있는 팀과 좋은 애프터 서비스
제품 쇼
자주하는 질문
Q : 거래 회사입니까 아니면 제조업체입니까?
A : 우리는 공장입니다.
Q : 배송 시간은 얼마나 걸립니까?
A : 일반적으로 상품이 재고가있는 경우 5-10 일입니다. 또는 상품이 재고가 없으면 15-30 일입니다.
Q : 샘플을 제공합니까? 무료입니까 아니면 추가입니까?
A : 그렇습니다. 샘플에 무료 요금을 제공 할 수는 있지만화물 비용을 지불하지 않습니다.
Q : 지불 조건은 무엇입니까?
A : 지불 <= 1000USD, 100% 미리 미리. 지불> = 1000USD, 미리 50% T/T, 배송 전 잔액.
