Silicon Nitride Si3N4 bonded Silicon Carbide SiC protection tube See larger image Silicon

Ref Price:
Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
2000 m.t./month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Product Description

 

 

  Silicon Nitride Si3N4 bonded Silicon Carbide SiC protection tube

  

Si3N4 bonded SiC ceramic refractory material, is mixed with high pure SIC fine powder and Silicon powder, after slip casting course, reaction sintered under 1400~1500°C. During the sintering course, filling the high pure Nitrogen into the furnace, then the silicon will react with Nitrogen and generate Si3N4,So Si3N4 bonded SiC material is composed of silicon nitride (23%) and silicon carbide(75%) as main raw material,mixed with organic material,and shaped by mixture, extrusion or pouring,then made after drying and nitrogenization.

 

Si3N4 bonded SiC as a new type refractory material,is used widely.The applying temperature is 1400 C.It has better thermal stability,thermal shock,which is better than plain refractory material and recrystallized SiC.It also has antioxidation,high corrosion resistant,wear-resistantance,high bending strength.It can resist corrosion and scouring,be no polluted and fast heat conduction in molten metal such as AL,Pb,Zn,Cu ect.

 

Please check below specification:

  1. The diameter of Si3N4 bonded SiC thermocouple protection tube is Φ12-80mm,length is 1600 mm.It can be usded in high temperature kiln furnace and all kinds of atmosphere.It also can be directly used in all kinds of melted liquid.

  2. Liquid tube,heating sheath,protection tube:used in aluminum liquid and glass liquid.It has good thermal conductivity,corrosion resistance,compression resistance,long lif ect.

  3. Roller tube:used in brickkiln furnace on the ground,diameter Φ30-50mm,length within 1600mm,high temperature resistance,no deformation,high strength

4. Kiln furniture: used in tunnel kiln,shuttle kiln, down draught kiln,with good carrying capacity.It is ideal kiln furniture for increasing output of kiln furnace and make good use of space of kiln furnace.

5. Sagger:used for firing high grade refractory material,rare metal,powder metallurgy,electronic components and various loose material.Shape can be canister and rectangle.

6. Various refractory piece:with impact resistance,high temperature resistance,wear-resistance, good thermal shock resistance ect.Suitable for heat exchanger, cold air pipe, burner nozzle,crucible.

It can not only gain energy-saving effect,but also can keep product from pollution, and long life and convenient operation if you choose Si3N4 bonded SiC.

Silicon Nitride Si3N4 bonded Silicon Carbide SiC protection tube See larger image Silicon

 

The physical and chemical performance of Si3N4 bonded SiC :

Item

Index

Compressive strength Mpa

> 120

Bending strength Mpa

> 40

Vol. density g/cm³

2.4

Porosity %

20

Thermal conductivity (1200 °C) W/M °C

15

Thermal shock 1000°C-20°C

> 20 times

Resistivity

104

Moh's hardness

> 9


Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:Who knows about roof fireproofing materials?
Roof thermal insulation materials are various which generally can be divided into two categories, namely inorganic and organic materials: Inorganic materials are expanded perlite, aerated concrete, rock wool, glass wool, etc. Organic materials are styrofoam, polyurethane foaming plastic and so on. A. common roof thermal insulation materials 1. the expanding polystyrene board (EPS) has good thermal insulation performance, and cheap price but poor intensity with heat conductivity coefficient of 0.038-0.041. 2. extruded polystyrene board (XPS) has better thermal insulation performance and high intensity but an expensive price with heat conductivity coefficient of 0.028-0.03. It is moisture resistant but needs treatments on surface in construction. 3. rock wool board, with heat conductivity coefficient of 0.041-0.045, is fireproofing, fire retardant. It has a good hygroscopicity performance but is poor in thermal insulation. 4. gelatine powder polyphenyl granule heat insulating slurry, with heat conductivity coefficient of 0.057- 0.06, has a good flame resistance performance, but the results of recycling and thermal insulation are unsatisfactory. It has high construction requirements. 5. polyurethane foaming material, with heat conductivity coefficient of 0.025-0.028, has good waterproofness and thermal insulation performance, as well as high intensity, but it is expensive. 6. perlite and other slurry, with heat conductivity coefficient of 0.07-0.09, have good flameproofness and water-absorbing ability but are poor in thermal insulation and thermostability.
Q:I am a refractory material manufacturer, sold products, money is always not back, anxious to die, what is the way?
Metallurgical industry downturn. There is fierce competition in the refractory industry.
Q:Concrete composition and function of magnesia bond used in refractory
According to the chemical composition and use can be divided into metallurgical magnesia, magnesia brick, magnesia brick, magnesia brick, magnesia calcium brick, magnesia brick and other varieties. Its performance is greatly affected by CaO/SiO2 ratio and impurities. High purity magnesia brick refractoriness under load and thermal shock resistance are better than the general magnesia brick. High refractoriness, has good resistance to alkaline slag and iron slag, is a kind of important senior refractories. Use of magnesia product production by sintering process, sintering temperature is 1500 ~ 1800 DEG C, in addition, you can also add chemical bond, made of brick and unshaped refractory material. Mainly used in open hearth furnace, electric furnace, converter, oxidation non-ferrous metal smelting furnace, cement kiln and alkaline refractory kiln etc..
Q:What is the use of refractory?
Refractories mainly provide stable working environment for high temperature operation , such as metallurgical industry (steel ladle, hot-metal bottle, torpedo car and most places directly in contact with molten steel and iron), chemical industry (coke oven cokeing, dry quenching engineering) and building materials industry (lime kiln and glass kiln)
Q:What's the requirements of fire-fighting criteria of heat insulating material?
It shouldn't be under than B2 level. Roofing insulation fire rating requirements: the ministry of public security, housing and urban-rural development department issued about printing and distributing the civil building external thermal insulation system and the interim provisions on the exterior wall decorative fireproof prescribed in the notice: roof grassroots adopted duration of fire resistance is the non-combustible component that shouldn't less than 1.00 h's. Its roof insulation materials should not be below B2; Otherwise, the combustion performance of insulating material should not be below the B1 level. The junction of the roof and wall, the insulation layer around the opening part of roof should use the grade A thermal insulation material to set level fire-fighting belt that width is not less than 500 mm.
Q:What's the fire retardant material of roller shutter fire resistance door ?
Core board of fire door materials are composited by inorganic materials, and the main components are perlite, inorganic adhesive and other special formula. It has flat and smooth surface, unibody. It is fireproof, sound and thermal insulating. It has passed tests of Tianjin Fire Research Institute and Beijing construction institute.
Q:Technical scheme of refractory for refuse incinerator
Incinerator conditions and requirements for refractory lining1, working conditions: deal with rare earth, furnace body normal use temperature of 800~900 degrees.2, the specific requirement for refractory: refractory has good resistance to acid corrosion, thermal shock performance good stability and good high temperature.
Q:What are first rate fire resistant window materials?
class A window not less than 1.2 hours, class B window not less than 0.9 hours, Class C window not less than 0.6 hours. technical requirments: 1, materials and accessories (1) the window frame is made with a certain strength sufficient to safeguard the integrity and stability of the steel frame or wooden frame. (2) steel frame and mound layer can choose the galvanized steel plate or stainless steel plate. Its selection standards is in line with GB12955 "Steel Fireproof Door General Technical Condition" provisions of Article 5.1. (3) wood frame and mound layer material selected from the standard should be consistent with GB14101 "General Technical Conditions of Wooden Fireproof Door" in the provisions of Article 5.1.1. (4 ) steel, wood frame the inside filler material should be incombustible material. (5) fireproofing glass can be used without affecting the fire windows fire resistance test approved product. light transmittance of glass should not less than 75% of commom sheet glass which is the same number of layers. ( 6) a sealing material between the frame and the fire-resistant glass flame retardant materials should be used, which can play the role of fireproofing and smoke insulation in case of fire (7) hardware fitting should be tested as approved supporting product
Q:How long can gypsum board endure fire?
General gypsum plaster board with a thickness of less than 12mm has a fire endurance which is less than half an hour. Scheme One of gypsum board partition system by using 75# series of lightgage steel joist: separation distance of keels keep 600mm in vertical direction. The thickness is greater than 0.5mm; gypsum board: it shoule be the board of double-sided and single-layer with the thickness of 12mm. Fire-resistant gypsum plaster board's fire-resistance limit: 1 hour. Sound insulation index: over 35 rwdb.
Q:Procedures for producing common refractory materials?
The general procedures of producing refractory materials include calcination of raw materials, selection of raw material , crushing, grinding, screening, mixing, ageing mixture, molding, drying, burning and etc. At present, the refractory factory usually purchases the calcined clinker, so the calcination of raw material is no longer a consideration of common refractory plants.

1. Manufacturer Overview

Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range