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Corrosion Resistant Castings Supplier

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Wuxi Junteng Fanghu Alloy Technology Co., Ltd.
Since 2006, we have been dedicated to designing and manufacturing alloy steel components. We are Wholesale Corrosion Resistant Castings Supplier and OEM Corrosion Resistant Castings Company in China.
Kabilang sa aming mga pangunahing produkto ang mga heat treatment fixture, radiant tubes, furnace roller, fan blades, furnace rails, gulong, at iba't iba pang bahagi ng alloy para sa mga furnace. Nag-aalok kami ng teknikal na tulong upang i-customize o i-optimize ang iyong mga heat treatment fixture, na tinutulungan ang aming mga customer na tumuklas ng mga cost-effective na solusyon upang mapahusay ang kahusayan ng kanilang mga pagpapatakbo ng heat treatment.
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Wuxi Junteng Fanghu Alloy Technology Co., Ltd.
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Sertipiko ng karangalan
  • 2015 Natitirang Supplier
  • 2016 Natitirang Supplier
  • 2017 Natitirang Supplier
  • 2018 Natitirang Supplier
  • China Heat Treatment Industry Association
  • Form ng Pagpaparehistro ng Foreign Trade
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Balita
Corrosion Resistant Castings Industry knowledge

What are some typical application cases of corrosion resistant castings in the marine, chemical, and petroleum industries?

1. Marine Engineering: Nickel-chromium-molybdenum/tungsten high-alloy castings are widely used in pump bodies, valves, and pipe fittings for offshore platforms due to their resistance to pitting and crevice corrosion in seawater environments.

2. Chemical Plants: Corrosion-resistant steel castings containing more than 11% chromium exhibit excellent corrosion resistance in water/steam systems below 315°C in chemical production and are commonly used in internal structural components of heat exchangers and reactors.

3. Petroleum Refining: High-nickel alloy castings used in high-temperature, corrosive media (such as hydrogen sulfide and chlorides) in oil refineries can significantly extend the service life of critical components such as furnace tubes and heat exchangers.

4. Oil and Gas Transportation: In valves and joints of oil and gas pipelines, corrosion resistant castings can resist the erosion of water-containing and acidic gases, reduce the risk of leakage, and improve system reliability.

What are the commonly used heat treatment processes for producing corrosion resistant castings?

1. Solution Annealing & Quenching: Solution treatment is performed at around 1000°C, followed by rapid water cooling to redissolve harmful phases such as carbides and σ phases, restoring the austenitic structure and improving corrosion resistance.

2. Homogenization Annealing: Typically held at 950–1100°C for 2–3 hours, this eliminates compositional segregation and residual stress from casting, significantly reduces the probability of σ phase precipitation, and improves high-temperature strength and crack resistance.

3. Normalizing: Normalizing low-alloy corrosion resistant castings at 800–950°C refines the grains, homogenizes the microstructure, improves mechanical properties, and facilitates subsequent stress relief. 7. Precipitation Hardening: For high-alloy castings containing alloying elements such as Ni, Mo, and Ti, aging treatment at 600–700°C is used to make the precipitated phases evenly distributed, thereby improving hardness and wear resistance. It is often used in stress-bearing parts such as furnace rollers and fan blades.