SSIC Silicon carbide tube

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Special ceramics: Special ceramics

Product Description:

SSIC   Silicon   carbide   tube

SSIC   Silicon   carbide   tube

Tailor-made for customers all kinds of pumps with my company, kettle, bearing no pressure sintering silicon carbide mechanical seal, and all kinds of resistance corrosion pump parts and the accessories. Our company pressureless sintered silicon carbide products a reaction bonded silicon carbide products, can easily adapt to the harsh working conditions, in strong corrosive, strong wear, high temperature, high pressure, high strength harsh harsh under complex conditions is more outstanding. At the same time, our company to provide customers with nozzles, armored body armor plate and other special-shaped pieces of custom-made service.

Compared with the reaction sintered silicon carbide product (SSIC), the production process of the sintered silicon carbide product (RBSIC) is complex and the production investment is high. In addition, whether it is in the resistance to corrosion and abrasion, compressive and flexural fracture resistance of or high pressure, high temperature and other properties are more excellent, this is pressureless sintering silicon carbide products will in the near future completely replace reaction bonded silicon carbide products is one of the important reasons. The main varieties of the pressureless sintering silicon carbide products with all kinds of mechanical seal with sealing ring and moving ring and static ring, corrosion resistant pump, magnetic pump, shield pump components. At the same time, the production special-shaped pieces of nozzle, wire drawing die, armor plate. According to the drawings, we will provide customers with satisfactory products and customer satisfaction. Let customer satisfaction is one of the purposes of our company has been pursued, but also one of the objectives pursued by all the staff of our company.

Features: high temperature resistance, wear resistance, corrosion resistance, oxidation resistance, hardness, heat conduction

Main products: mechanical seals, pump parts, nozzles, bullet proof plate

Mechanical seals: high hardness, high wear resistance, good self - Lubrication and high heat conductivity, so the service life of mechanical seal is greatly improved.

Pump: resistance to corrosion and wear characteristic of the pressureless sintering silicon carbide become magnetic pump sliding bearing, resistant corrosion pump sleeve, shielding pump assembly, etc. various kinds of pump of choice

Nozzle: wear resistant, high temperature resistance, high hardness characteristics of the normal pressure sintering silicon carbide nozzle to become a perfect alternative to carbide nozzle

Armor: light weight, high hardness, good ballistic performance, pressureless sintering of SiC for your life and property security escort

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:Aging test report of rubber sealThat is to say, rubber sealant is how anti-aging
The factors that cause rubber aging are:(a) oxygen, oxygen free radical chain reaction in rubber with rubber molecules, the molecular chain rupture or excessive crosslinking caused by rubber properties. The change of oxidation is one of the important reasons for the aging of rubber.(b) ozone, ozone chemical activity is much higher than the oxygen, more damaging, it is also the molecular chain was broken, but the effect of ozone on the rubber with rubber deformation and no different. As for the deformation of the rubber (mainly unsaturated rubber), and should be perpendicular to the direction of stress crack the so-called "ozone cracking"; effect on the deformation of the rubber, only surface oxide film without cracking.(c): heat temperature increase can cause rubber thermal cracking or thermal crosslinking. But the basic role of heat or activation. Improve the diffusion rate of oxygen activation and oxidation reaction, thus speeding up the rubber oxidation reaction speed, which is an aging aging phenomenon, heat and oxygen.(d) light: light is shorter, the greater the energy. The destructive effects of rubber from the high energy ultraviolet light can directly cause fracture and cross-linking of rubber chain, rubber due to absorb light energy and produce free radicals, trigger and accelerate the oxidation reaction. The ultraviolet light plays the role of heating. The other feature (light and heat effect) is its main in the rubber surface into. The gum content of high sample, both sides will appear net cracks, the so-called "light outer crack".
Q:Who knows, the country has a few sealing strip production enterprises are more concentrated place
Aluminum Alloy seal doors and windows, steel doors and windows, glass curtain wall seal sealant, container door seal and a door sponge rubber sealing strip, sealing tape, self-adhesive frozen door sealing strip, the doors of the glass slide, door trim, sponge sealing strips and retaining of the glass doors, glass windshield seal, fire seal flame retardant, pipe, tube, silicone tube, winding hose, water pipe, air pipe and oil pipe, automotive rubber seal, EPDM seal, with flexible sealing strip, sponge foaming adhesive tape, sealing tape, foam tape
Q:What are the differences between silicone rubber and butyl rubber in the use of water seals for home improvement?
Not easy to produce bacteria, it is recommended to use! If the price is low, choose the nitrile! I have not heard of it!
Q:Classification of the use of seals
Seals can be divided into two categories: static seal and dynamic seal. Static seals are mainly gasket seal, sealant sealing and direct contact sealing three categories. According to the work pressure, static seal can be divided into medium and low pressure static seal and high pressure static seal. Low and medium pressure static seals are usually made of soft and wide width gasket. High pressure and static seals are made of hard material and metal gaskets with narrow width. Dynamic seals can be divided into rotary seal and reciprocating seal two basic types. According to the seal of the relative movement of the parts is divided into sealing contact, contact and non-contact seal; according to the seal and the contact position can be divided into circumferential seal and the seal, the seal is also called mechanical seal. The centrifugal seal and spiral seal in the dynamic seal are sealed by the power of the medium when the machine is running, so it is sometimes called the power seal.
Q:What rubber kind of rubber does the brake seal of the car use?
People have encountered such a problem in production: a customer asked him to produce a number of cars on the brakes with seals, resistance brake oil, swelling can not exceed 2%, shore A60. hardness he used nitrile rubber production, detection of customers to pay customers after that swelling failed, he was replaced nitrile rubber grades with nitrile rubber and butadiene acrylonitrile production in 42% and merged with pVC, is still not qualified. This puzzled him.
Q:Seal type of transformer oil tank
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:How do you determine the assembly direction of the cylinder seals?
According to the sealing direction and the pressure direction of the cylinder to determine, usually in relative direction
Q:So in today's world, mechanical seal is the most important shaft seal in these equipment. The mechanical seal is also called the seal, in the relevant national standard is defined as: "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 magnetic) device and the role of the coordination of auxiliary seals to keep up with the relative sliding to prevent fluid leakage. "
Regarding the submitted APS examination materials, if you do not have the time to notarization, you may try to issue bilingual seals to the University, instead of notarization!High school diploma can also be issued to the high school!
Q:What are the uses and types of seals?
Seals can be divided into two categories: static seal and dynamic seal.Static seals are mainly gasket seal, sealant sealing and direct contact sealing three categories.According to the work pressure, static seal can be divided into medium and low pressure static seal and high pressure static seal. Low and medium pressure static seals are usually made of soft and wide width gasket. High pressure and static seals are made of hard material and metal gaskets with narrow width.
Q:What are the cylinder seals?
Other static seals, located in the end cover, ah, cylinder above a few, the requirements are not high.- the drawings are a simple hint.

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