SSIC silicon carbide sealing ring
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- 10000 pc/month
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Specification
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Silicon carbide seal rings Definition - silicon carbide material, depending on the process, after a certain production methods, the production of a silicon carbide products. Its purpose - use is quite extensive, a variety of mechanical products can be applied to, depending on the specifications, the production of different types of products, and ultimately to play a role in sealing. How to develop silicon carbide seal ring market - depending on the product positioning market, according to market distribution brand. Prospects silicon carbide seal ring - prospects for development is still quite widely, in general, based on the current process, innovation, products more promising.
Feature
1. plasticity - as long as the silicon carbide material has a certain process, it may be compressed into various shapes of blank, then a second and can be processed, shaped into products that customers need.
2. corrosion resistance - silicon carbide seal ring may be in the acid environment, the sealing effect is not reduced.
3. abrasion resistance - silicon carbide seal ring through a certain finishing process, so to achieve high-precision flat and smooth, plus the wear resistance of silicon carbide, silicon carbide seal ring so you can use mutual friction. In high-temperature performance, wear performance is not reduced.
4. High temperature resistance - due to the material properties of silicon carbide, silicon carbide seal ring and therefore has a high temperature resistance, depending on the process, high temperature performance is not the same. The reaction sintered silicon carbide seal ring can be used at 1300 degrees without pressure sintered silicon carbide seal ring can reach 1600 degrees.
Here are some of the pressure sintered silicon carbide products, physical and chemical parameters:
medium | content | Causticity | |||||||
Atmospheric SIC | The reaction SIC WC | WC | AL2O3 | ZrO2 | Si3N4 | stainless steel | steel | ||
HNO3 nitric acid | 50% | A | A | C | A | A | C | C | C |
Hydrochloric acid HCI | 35% | A | A | C | A | A | C | C | A |
Sulfuric acid H2SO4 | 98% | A | A | C | A | A | C | C | A |
Hydrofluoric acid HFF | 40% | A | C | C | C | C | C | C | C |
Phosphoric acid H5PO4 215OC | 85% | C | C | C | C | C | C | C | C |
HNO3+HF | 20%+5% | A | C | C | C | C | C | C | C |
Sodium chlorate NaCIO | 10% | A | B | C | A | A | A | C | A |
Sodium hydroxide NaOHH | 50% | A | C | A | B | A | B | A | A |
Potassium hydroxide KOH | A | C | A | B | A | B | A | A | |
Acetic acid CH3COOHH | 80% | A | A | C | A | A | C | C | C |
Sodium sulfate + Na2CO3 + H2SO4 925OC
| A | A | C | A | A | C | C | B | |
Silica solution SIO2
| B | C | C | C | C | C | |||
Assessment Method: the specimen prior polishing, immersed in the test liquid (70OC) for 100 hours, the weight was measured and observed microstructure, weight reduction is calculated by the degree of corrosion was observed microstructure for corrosion to comprehensive judgments. | |||||||||
A level (corrosion): corrosion rate ≤0.125mm / ingredients in a small amount of corrosion observed slice | |||||||||
Level B (somewhat resistant): corrosion rate = 0.125-1.0mm / or annual corrosion rate ≤0.125mm / observe a large number of corrosion | |||||||||
Class C (resistant to corrosion): corrosion rate ≥1.0mm / or the main ingredient of Corrosion
Silicon carbide performance indicators
Index Name
| Atmospheric SiC | Reaction Bonded Silicon Carbide |
Purity (%) of silicon carbide | ＞ 97 | ＞90 |
Density (g / cm) | 3.06-3.15 | ＞3.05 |
Particle size (um) | 0.5-0.7 | 8-20 |
Hardness (HRA) | ≥90 | ≥90 |
Flexural Strength (MPa) | 400-580 | 350-450 |
Compressive strength (MPa) | 3900 | ＞2500 |
Fracture Strength (MPa) | 3.05-4.6 | 4.3 |
Elastic Modulus (GPa) | 380-410 | 420 |
Thermal conductivity | 102.6 | 35-110 |
Coefficient of thermal expansion (1 / ℃) | 4.02×10 | 4.3×10 |
Poisson's ratio | 0.14 | 0.15 |
：
- Q: What is the life span of all kinds of rubber seals?
- Your question is a false proposition, the rubber seal life is related to material and working conditions, rubber is a lot of weight, there are fluorine rubber, silicone rubber and so on,
- Q: What is the optimum amount of compression for the seal? Is the amount of compression related to the material of the sealing ring? What is the relationship between the hardness of the sealing ring and the hardness of the sealing ring?
- Ding Qing rubber resistant mineral oil, silicone oil, animal oil, esters, HFA, HFB, HFC, air and water, water resistance increased with the increase of propylene, but low temperature and permeability decreased. Not suitable for phosphate system hydraulic oil and polar additives gear oil, suitable for temperature -30~100, generally used for O ring, oil seal and so on
- Q: Mechanical, I often need to use seals, when used, suddenly do not know the specifications, size, which guy knows what manuals can be found?
- It also introduces how to choose the sealing material and the sealing type reasonably according to the working conditions, and the design of the sealing structure is carried out. In addition, all kinds of seals conforming to the national standard are also provided for readers to choose from
- Q: Is it good to use NBR or EPDM for sealing parts?
- NBR produces industrial rubber products exposed to mineral oils, liquids, and gases
- Q: About hydraulic cylinder sealing ring What is the model of the general oil cylinder seal ring and what is its selection principle?
- (3) the sealing ring has the advantages of strong corrosion resistance, aging resistance, long service life, good wear resistance, and automatic compensation to a certain extent after wearing.(4) the structure is simple, the use and maintenance are convenient, and the sealing ring has longer service life.
- Q: In the seal of hydraulic cylinder, the O-ring and Y ring are sealed well
- Can not simply say that the good sealing and badAs long as the pressure reaches the sealing ring value, the seal is normal. Each has its own merits。
- Q: What tools are needed to replace the water seal for the air conditioning pump? What's the name?
- Here I introduce the replacement of mechanical seals technical points:Mechanical seal principleThe seal is defined by at least a pair of end faces perpendicular to the axis of rotation of the fluid pressure and the elasticity of compensation organizations (or force) the role of the device and auxiliary seal with maintaining relative sliding postmerger and constitutes to prevent fluid leakage. The main parts of mechanical seals are as follows: A. main seals: moving ring and stationary ring. B. auxiliary seals: seals. C. press: spring.
- Q: How to prevent the metal from sticking to the gasket?
- It is better to use torque wrench when sealing gasket is pressed. For large bolts and high strength bolts, it is better to use hydraulic tightening devices. The tightening torque shall be calculated by calculation according to the given gasket. The size of the hydraulic pressure of the hydraulic tightening device shall also be determined by calculation.5. When installing the gasket, tighten the nut in sequence. However, the design value should not be screwed once. Generally should be recycled at least 2~3 times so that the gasket can be evenly distributed.6, the flammable and explosive medium pressure vessel and piping, replacing gasket should be used to avoid security tools, tool and flange bolts or collide, sparks, causing a fire or explosion accident.
- Q: There are two types of oil tank seals for transformers. They are "totally sealed" and "oil pillow type". What is the difference between them? Who can explain in detail?
- 3., rubber seal material selection is improper, transformer if it is outdoor installation use environment, should choose ultraviolet resistant rubber. If you use a high temperature position, you should choose a high temperature resistant rubber, if used in contact with the transformer oil, you need to select oil resistant rubber.
- Q: Mechanical seals do not refuel, can not?
- Of course not! Refueling is to block the small gap, to prevent leakage.
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SSIC silicon carbide sealing ring
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 pc
- Supply Capability:
- 10000 pc/month
OKorder Service Pledge
OKorder Financial Service
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