Key To Optimizing Gb Gcr15 Steel Plate Performance - China

The core goal of optimizing the performance of GB GCr15 steel plate (Chinese standard high-carbon chromium bearing steel, corresponding to international standards SUJ2 and AISI 52100) is to enhance hardness, wear resistance, and contact fatigue strength, focusing on its core applications (high-precision wear-resistant components such as bearing rings and rolling elements), while also controlling toughness, dimensional stability, and internal purity to prevent premature failure.

1 - Precise Chemical Composition Control: Laying the Foundation for Performance

The standard composition of GB GCr15 steel plate is C: 0.95-1.05% and Cr: 1.40-1.65%.

Precise control of trace alloying elements is a prerequisite for performance optimization, focusing on "ensuring the quality of carbide precipitation while suppressing the effects of deleterious elements.

" 2 - Strengthening Metallurgy and Refining: Improving Internal Purity

80% of premature failures of GB GCr15 steel plate (such as contact fatigue spalling and cracking) are related to internal inclusions, porosity, and segregation.

Therefore, "low inclusion content and high purity" are the core principles of metallurgy optimization.

3 - Optimizing the Rolling Process: Grain Refinement and Microstructure Control

The core of rolling is to refine austenite grains through "deformation induction + recrystallization" and control the distribution of carbides, laying the foundation for a uniform pretreatment microstructure for subsequent heat treatment.

4 - Precision Heat Treatment: Achieving a Balanced Strength and Toughness

Heat treatment is a key step in determining the ultimate performance of GB GCr15 steel plate.

The core process consists of "spheroidizing annealing - quenching - low-temperature tempering, " requiring precise control of temperature, holding time, and cooling rate.

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Our main products are round and flat bars for alloy steel, tool steel, stainless steel, spring steel, bearing steel and etc.

In those years we offers a wide range of high quality steel for engineering machinery, mold tooling, cutting tools manufacturing industry and etc.

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Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 0086 0769 85475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , GuangDong , China

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• Website: https://songshunsteel.com/

• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
  After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter.
  
  Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service.
  
  Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on.
  
  Songshun specialized in Special Steel for almost 20 years.
  
  We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.
  
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