Heat resistant material grate plate for grate cooler used for
melting industry
Heat-resistant steel is commonly used in the manufacture of parts
that operate at high temperatures in industrial sectors such as
boilers, steam turbines, power machinery, industrial furnaces, and
aviation and petrochemical industries. In addition to
high-temperature strength and resistance to high-temperature
oxidative corrosion, these components require sufficient toughness,
good workability and weldability, and certain organizational
stability according to different applications. China has been
producing heat-resistant steel since 1952. In the future, some new
low-alloy heat-strength steels have been developed to increase the
working temperature of pearlite heat-strength steels to 600-620°C;
in addition, some new low-chromium nickel anti-oxidation steels
have also been developed.
Grate Plate / grate cooler for chain grate machine by Cr25Ni20
material. The grate plate is an important part of the chain grate.
The quality of the product directly affects the use effect of the
chain grate. The grate machine is widely used in metallurgy and
other industries, and plays a vital role in the operation of the
entire plant. Therefore, we attach great importance to the quality
of grate board and pursue excellence.
We use heat-resistant steel material to produce grate board, the
product has good heat resistance, and adopts advanced casting
process to ensure product size accuracy meets customer
requirements. We strictly control the chemical composition of the
products and pursue the best heat resistance. Our products have
been widely praised by customers.
Material requirement as follow:
| C% | Mn% | Si% | P% | S% | Cr% | Ni% | Mo% |
| 0.3-0.45 | 1-1.5 | 1.0-2.0 | ≤0.03 | ≤0.03 | 24-26 | 19-21 | 0.4-0.6 |
| σb (MPa) | σ0.2 (MPa) | δ5 (%) | ψ (%) | HBW |
| ≥515 | ≥205 | ≥35 | ≥50 | ≤182 |
We are supplying many different kind of heat resistant steel
castings to our customers and we use both investment casting
process and sand casting process for different size or different
structure casting. For suitable castings, we also choose lost foam
process which have better cost and quality performance.
There have lot of different specifications for such castings,
usually we produce according to customers drawings and specific
requirement, following are the common materials which we usually
supply: ZG35Cr24Ni7SiNRe, ZG40Cr25Ni20Si2, 1Cr18Ni9, ZGCr25Ni35Nb,
ZGCr28Ni48W5 HK40, HT, HU, HH, 22H, 304, super 22H, HP-Nb, More1, More2, 1.4848, 1.4855, 1.4852, 2.4879,
1.4460, 1.4462, S32205, S32750, etc.
Our products are been widely use in cement plants, electric
generate plant, melting industry, and other industries. In recent
years, there are more and more professional municipal waste
incineration stations, and we have developed a lot of
heat-resistant casting products specially supplied to such
factories.
