Refractory Raw Materials-High Chrome Casting Bars

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 20 m.t.

Supply Capability:: 1000 m.t./month

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High chrome alloyed casting bar:
1: High hardness
2: Little breakage
3: Low wear rate
4: Good wear-resistant
5: Quality superior

High chrome alloyed casting bar

Our products used in many field, such as, cement, power, industry, chemical, mine, station and so on. The new products is high hardness, little breakage, low wear rate, good wear-resistant, our annual production capacity is more than 30, 000 metric tons. Guoyang wear-resisant materials are making frist class corporation brand.

Specification:

Φ 8; Φ 10; Φ 12; Φ 14; Φ 16; Φ 18; Φ 20; Φ 20*25; Φ 25*30; Φ 30*35; Φ 35*40.

ITEM	Designation	Chemical Composition
ITEM	Designation	C	Si	Mn	Cr	Mo	P	S
Popular Grade	ZQCr10	1.8-32	0.3-1.2	0.2-1.0	10-13	Trace	0, 10	0.10
		Cu	Ni	Nb	Ti	B	Zr	V
		Trace	Trace	Trace	Trace	Trace	Trace	Trace
Hight Chromim Cast Grinding Bars	ZQCr26	2.0-30	≤ 1.0	0.2-1.0	22-28	≤ 1.0	≤ 0.10	≤ 0.08
	ZQCr20	2.0-3.0	≤ 1.0	0.2-1.0	18-22	≤ 1.0	≤ 0.10	≤ 0.08
	ZQCr17	2.0-3.2	≤ 1.0	0.2-1.0	13-18	≤ 1.0	≤ 0.10	≤ 0.08

ITEM	Designation	Hardness(HRC)		Microstruture
ITEM	Designation	Quenched state(A)	Quenched state(A )	Microstruture
Popuar Grade	ZQCr10	≥ 58	≥ 50	M+C M-Martensite C-Carbide
High Chromium Cast Grinding Balls	ZQCr26	≥ 58	≥ 45
	ZQCr20	≥ 58	≥ 45
	ZQCr17	≥ 58	≥ 49

Q: what grades are fire resistance of fireproofing glass divided into?: Fireproofing glass is a kind of special glass which can keep its integrity and thermal insulation performance in regular insulating refractory trials. and it can be divided into three classes according to its fire resistance: Class A, it's a kind of fireproofing glass that can satisfy the requirements of refractory integrity, refractory and thermal insulation at the same time. This kind of glass has the properiyies of transmittance, fireproofing ( smoke insulation, fireproofing, and keeping out thermal radiation), sound insulation, shock resistance, and it's suitable for steel and wooden fire door of building decoration, windows, varnishing, partition walldaylighting?roof,ceiling?screen,perspective floor and other construction components demading for transparency and fireproofing. Class B, it's a kind of fireproofing glass that can satisfy the requirements of refractory integrity, refractory and thermal insulation at the same time. Such kind of fireproofing glasses mostly are composite fireproofing glasses and has characteristics of transmittance,fireproofing and smoke insulation. Class C, it's a kind of fireproofing glass that only satisfies the requirements of refractory integrity. This kind of glass has characteristics of transmittance, fireproofing, smoke insulation and high strength,etc. It's suitable for fireproofing glass partition wall, fire Windows, outside curtain wall and other places without insulation requirements.

Q: Technical scheme of refractory for refuse incinerator: Design of refractory for incineratorAccording to the condition of incinerator, the requirements of refractory, the temperature of each part and the temperature of outer wall of shell are discussed. The scheme for using refractory materials is as follows:The furnace body is made of two layers of structure, that is, 114mm thick clay brick is built near the steel shell, and the lining is made of 134mm thick graphite brick.

Q: Refractory net: I think China's refractory industry does exist high yield and quality is not high.The main reason, I think, is the immaturity of the Chinese government and individuals. First of all, the government does not encourage basic research, resulting in the lack of innovation in the refractory industry; moreover, the company and enterprise take immediate interests as the most important and do not value long-term development; individual enterprises are eager for quick success and instant benefit. Users of domestic refractories, refractory products only to the price for the bid by standard of foreign products; regardless of price, quite a bit of the meaning of things.

Q: What are the applications of refractory in petroleum?: Petroleum industrial furnace has many varieties. Generally, it includes tubular with complex structure, whose use temperature is generally 500 to 600 degrees centigrade, sometimes may be 800 degrees centigrade. Petroleum gas contains hydrogen sulfide and solid particulate matter; first correct the answer of the first floor: It is not used in petroleum industry. As shown in the left picture, it is tubular heating furnace, appilied to metallurgical industry. Lined with lightweight insulation and wear-resistant layers, and resistant to wear and corrosion: 1; & nbsp, but the using temperature is not high; it is a thermal equipment in the oil refining process. High alumina refractory castable used for refractory layer. It is an important equipment of petroleum boiling catalysis and dissociation. You can choose light refractory bricks or refractory?castables; as shown in the right picture, it is catalytic cracking unit, and can bear pressure. Note; & nbsp: // f; & nbsp.hiphotos, fire-resistant plastic or refractory ramming mass has chemical corrosion and wear effect on lining; & nbsp, less than 1,350 degrees centigrade. The yse temperatures is up to 1,100 degrees centigrade.

Q: What is special refractories?: Long nozzle, slidding plate, tapping hole, stopper rods, and products that steel mills use

Q: What are included in fireproofing materials?: There are many types of fireproof materials, and the following listed below is the main species: All kinds of fire retardant coating such as finishing fire retardant paint, fire retardant coating components, fire-resistant coating for steel structure; all kinds of fire-proof materials such as fire?retardant material and its products, textile, fire?retardant fabric, building materials and products, flooring material and external wall thermal insulation system; all kinds of fireproofing components such as fireproof?panel, fire door, fire resistant window frame, fire resisting shutter, fireproofing glass, elevator landing door,ventilating duct, fire-proof?sealing?material and fire protection smoke exhaust fan. The main indicators to judge fire resistance are: Flame retardency, ignition,production of?toxic?gases, smoke density,heat release and exhaust gas; fire resistance, combustion performance, heat of combustion, fire-resistant performance, high temperature resistance, fire?rating, etc. There are some specific parameters which need to be judged by a professional testing equipment. You can go to the inorganic laboratory to check. The test results of fire rating are accurate.

Q: Which are roofing fireproofing material?: (1) Foamed concrete is a kind of fire-proof thermal inuslation matertial featured by good fire resistance and thermal insulation. Besides, it is also characterized by excellent sound proofing, penetration resistance, easy construction, safety and environmental protection without toxin and pollution. (2) Foam glass is featured by light weight, small heat conductivity coefficient and water absorbption, non-inflammability, fire resistance, high strength, no moulding, corrosion resistance, non-toxin and stable physical and chemical properties and thus widely used petroleum, chemical engineering and underground construction. It is also featured by thermal insualtion, heat/cold preservation and sound absorbption and thus can be used for thermal insulation of external wall and roof of civil builduing. Foam glass is featured by stable chemical property, easy to be processed and not easy to deforme, and durable. (3) With slag, basalt and other natural ore as the main raw material, rock wool, mineral wool and its products are made by high temperature melting into fiber, and then processing with binder. It has low thermal conductivity, fire resistance, easy construction and good effects of energy saving and thus is highly cost-effective. (4) With phenolic foam material as main material, phenolic resin plate is made by foaming thermoset phenolic resin. It is featured by light weight, fire resistance, no burning in the air, no smoking, non-toxin, no dropping and non-embrittlement and thus is an ideal thermal insulation material used in HAVC projects. Due to its high obturator formamen rate, low heat conductivity coefficient, good thermal insulation, water resistance and water vapor permeability, phenolic foam is an ideal thermal insulation material.

Q: how to classify the fireproofing material levels A1 A2 B1?: their classification is shown specifically in Fireproof? Specification of Building Interior Decoration?Design GB 50222-95 appendix A, flammability,inflammability materials, flame retardency, noninflammability: combustion performance of A, B3, B2, B1 materials are divided into

Q: Who knows what kind of fire protection material is better?: Characteristic of polyurethane rigid foam thermal insulation decorative composite board: (1) ultra high cost performance, increased property's selling point (high cost performance) new model of thermal insulation material, excellent thermal insulation properties, elegant decorative effect, 50 years of service life, reduce maintenance costs and social waste. (2) it overcomes defects of traditional insulation technology (to solve the freezing and thawing, veneer cracking and shedding) traditional benzene board, the phenomenon of freezing and thawing that is easily appear in plastic extruded sheet, paint finish is easy to crack; its veneer facing can easily fall off; thermal insulation materials and wall are poorly adhered, easy off the whole. There is a themal bridge in dry hanging wall. (the characteristics of polyurethane composite board)

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