SSIC silicon carbide sealing ring
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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 |
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- Q: The difference and advantages and disadvantages of single lip seal and double lip seal
- Single lip seal structure is simple, a little poor sealing, but the installation time is convenient; double lip sealing structure is complex, a little good sealing, but the installation is better than single lip seal
- Q: How long will it take for the seal to age naturally after the seal has been installed on the cylinder?
- Also, how to place the oil cylinder also has something to do with it!But from the material side, the polyurethane 6~7 years, fluorine rubber words, 9~10 years!
- Q: Is it good to use NBR or EPDM for sealing parts?
- Both can be used in the production of seals. In simple terms, NBR is resistant to oil, EPDM, temperature resistant, ozone resistant and weather resistant
- Q: It's three yuan ethylene propylene sealing stripEPDM rubber sealing strip production enterprises are relatively concentrated or relatively large scale
- Glass bead, glass glue, glass of water, glass door seal rubber molded parts, mechanical seals, foam seals, seals, gaskets, rubber pad, three EPDM rubber molded products, silicone, transparent, dustproof, rubber (PVC), white, various types of color. All kinds of rubber, silica gel, rubber and plastic, three yuan ethylene propylene (EPDM) system
- Q: What equipment is needed to produce rubber seals and what is the production process?,
- The equipment used in raw material preparation includes kneading machine, glue machine, material machine, preforming machine and so onThe equipment that needs to be used in molding production is the hydraulic forming machine, which needs the adding of sulfur after molding
- Q: What is mechanical seal?Single mechanical seal? Double mechanical seal? What's the shaft seal?
- 2. mechanical seal is a kind of rotating machinery shaft seal device. Such as centrifugal pumps, centrifuges, reactors and compressors and other equipment. Due to the drive shaft through the inside and outside of the equipment, so there is a gap between the shaft and the peripheral equipment, equipment in the media leak out through the gap, if the device internal pressure below atmospheric pressure, air leakage to the equipment, so there must be a package of the shaft to prevent leakage. There are many kinds of shaft seals, because mechanical seals have the advantages of less leakage and long service life
- Q: How are ceramic and metal sealed joint?
- If it is static sealAxial, O ring or flat gasket can be used; radial O ring can be used.If it is dynamic seal, in addition to radial seal, but also consider whether the need for axial dust ring.The end face seal has a special sealing ring, and the lip is contacted with the ceramic surface.For reciprocating motion, a combination of O rings or other cross sections can be used.
- Q: Reasons affecting the tightness of cylinder
- 1, piston and cylinder clearance2, piston ring end clearance3 、 piston ring backlash4 cylinder cylindricity5, valve tightness
- 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: Silicone seals should pay attention to what storage?
- Do not open the sealing package when using, avoiding dirt sticking on the seal or scratching the seal.3, storage of non packaged products, do not stick or bring impurities, according to the original state of storage.
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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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