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Wholesale Brake caliper blank -Green Sand Casting QT500-7

Home / Products / Ductile Iron Castings / Green Sand Casting - Automobile Parts / Brake caliper blank -Green Sand Casting QT500-7
Brake caliper blank -Green Sand Casting QT500-7

Brake caliper blank -Green Sand Casting QT500-7

The brake caliper blank is the basic material for disc brake calipers. It is an initial, unfinished form produced through casting. Subsequent machining (turning, milling, drilling, boring, etc.) is required to create a finished caliper body with components such as pistons, guide pins, and brake pads. It directly determines the strength, rigidity, and durability of the finished caliper, serving as the fundamental guarantee of the caliper's core performance.

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Product details

The Brake Caliper Housing Blank serves as the primary structural component for disc brake calipers. Manufactured using the Green Sand Casting process, this blank provides the essential initial form required before precision machining operations such as turning, milling, drilling, and boring. This component is engineered to house critical elements, including pistons, guide pins, and brake pads. The casting quality fundamentally determines the final caliper's mechanical strength, structural rigidity, and long-term durability under thermal stress.

Core Advantages

Dimensional Accuracy: Controlled sand-to-metal ratios ensure consistent shrinkage, minimizing machining allowances.
Material Integrity: Complies strictly with QT500-7 and QT450-10 standards, ensuring optimal ferrite-pearlite distribution.
Production Scalability: Highly efficient for mass production on automated molding lines, reducing unit costs for automotive supply chains.
Internal Soundness: Uniform cooling rates within the sand mold reduce internal casting stresses and micro-porosity.

Technical Specifications

Material Grades: Ductile Iron QT500-7 (High Strength) / QT450-10 (High Ductility).
Process Method: Automated Green Sand Molding Line.
Surface Treatment: Shot blasting according to industrial standards for clean, paint-ready surfaces.
Inspection Protocols: Metallographic analysis, tensile testing, Brinell hardness testing, and ultrasonic flaw detection.

Applications

Designed for integration into the braking systems of various vehicle categories:
Commercial & Heavy-Duty Vehicles: Provides necessary compressive strength for heavy-load braking.
Heavy Trucks: Ensures structural stability and thermal resistance under extreme operational conditions.
Passenger Vehicles (SUVs & Sedans): Balances weight reduction requirements with high-response structural stiffness.

Technical FAQ & Solutions

Porosity Control: Optimized gating and riser systems through mold flow simulation to ensure proper metal feeding during solidification.
Hardness Variation: Strict control of carbon equivalent and nodularization timing to prevent chill formation and improve machinability.
Tolerance Management: Utilization of high-precision patterns and automated molding equipment to minimize dimensional deviations.

Product description

QT500-7/QT450-10

Standard table
Standard Code Standard Name Corresponding Grade
ISO 1083 Ductile Iron Grade System JS/500-7
EN 1563 European Ductile Iron Standard EN-GJS-500-7
DIN 1693 German Ductile Iron Standard GGG50
JIS G5502 Japanese Ductile Iron Standard FCD500/FCD500-7
ASTM A536 American Ductile Iron Standard 80-55-06 (Partial Correspondence)
Standard table
Standard Code Standard Name Corresponding Grade
ISO 1083 International Ductile Iron Standard 450-10
EN 1563 European Ductile Iron Standard EN-GJS-450-10
JIS G5502 Japanese Ductile Iron Standard FCD450-10
ASTM A536 American Ductile Iron Standard 65-45-12 (Approximate Correspondence)
GOST 7293 Russian Ductile Iron Standard В445 (VCh45)
KS D 4307 Korean Ductile Iron Standard GCD450

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Who are we?

Anhui Shixuan Machinery Technology Co., Ltd. was founded in March 2016 and is located at Meicun Road, Heli Park, Ningguo Economic and Technological Development Zone, Anhui Province. With an investment of over 50 million yuan, the company covers an area of 26 mu and has a factory building of more than 18,000 square meters. We are China Brake caliper blank -Green Sand Casting QT500-7 Suppliers and Wholesale Brake caliper blank -Green Sand Casting QT500-7 Exporter.

Since its establishment, the company has focused on technological innovation, aiming for industry leadership, and prioritized R&D investment and talent development. It has established an engineering technology R&D center with strong independent R&D capabilities. Equipped with a professional R&D team, the company provides specialized mold design and manufacturing for products tailored to each customer's requirements. The casting process adopts green sand and resin sand molding, producing various types of gray iron castings, ductile iron castings, and alloy castings. With an annual production capacity of over 100,000 tons, the company can manufacture products ranging from 0.5 kg to 80 kg. Its main products include auto parts, valve components (steam traps, steam valves), air compressor parts, hydraulic cylinders, and textile machinery parts. To better serve customers, the company also has a precision machining workshop equipped with CNC machining centers, CNC lathes, automatic multi-axis drilling machines, and automatic cleaning machines.

As an emerging casting manufacturer, the company boasts a high starting point and ambitious goals. Adhering to the principle of quality first and treating customers with integrity, its products are sold both domestically and internationally. Backed by advanced production equipment, superior product quality, and a strong corporate reputation, the company's products are marketed in Jiangsu, Zhejiang, Shanghai, and other regions, as well as exported to the United States (Watson McDaniel), the United Kingdom (Spirax Sarco), Argentina, and many other countries and regions. They have long been favored by customers for their stable quality and excellent performance.

The company has passed ISO14001:2015, ISO45001:2018, IATF16949:2016, and PED certifications, ensuring product quality, safety, and environmental management. In 2022, it was recognized as a "Xuancheng City Internet Demonstration Enterprise".

Qualifications we have obtained

Authentic reliable quality naturally stands out and fears no comparison.

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Brake caliper blank -Green Sand Casting QT500-7 Industry knowledge

How to Eliminate Subsurface Porosity in Brake Caliper Blanks Through Green Sand Parameter Control?

Technical Management of Gas Defects in Automotive Safety Castings

Subsurface porosity is a critical defect in brake caliper production, often remaining invisible until the precision machining of piston bores. These tiny gas holes compromise the pressure integrity of the hydraulic system. To prevent these defects, the casting process must balance sand permeability, moisture levels, and the generation of volatile gases during pouring.

Anhui Shixuan Machinery Technology Co., Ltd. utilizes its engineering technology R&D center to implement a "Low-Moisture, High-Permeability" strategy. By leveraging our automated molding lines within our 18,000-square-meter facility, we ensure that every Brake Caliper Blank - Green Sand Casting achieves a dense internal structure that meets the zero-leakage requirements of modern hydraulic braking systems.

  • Precision Moisture Control: Excessive moisture is the primary source of hydrogen and steam porosity. Anhui Shixuan Machinery Technology Co., Ltd. maintains a strict moisture range to minimize gas evolution while retaining mold strength.
  • Venting and Permeability Optimization: We optimize the grain size distribution of our green sand and maintain strict control over fine powder content to ensure that gases can escape freely through the mold wall rather than being trapped in the metal.
  • Coal Dust Substitute Management: By using high-quality lustrous carbon additives, we create a reducing atmosphere that prevents metal-mold reactions, which are often the hidden cause of subsurface gas defects.

Technical Parameter Comparison: Anti-Porosity Control Standards

The following table outlines the specialized parameters maintained by Anhui Shixuan Machinery Technology Co., Ltd. to ensure the integrity of automotive caliper blanks:

Sand Parameter Standard General Casting Shixuan Caliper Standard Benefit to Brake Calipers
Moisture Content (%) 3.8% - 4.5% 3.0% - 3.5% Drastically reduces gas source at the interface
Permeability (cm³/min) 100 - 130 150 - 180 Ensures rapid exhaust of mold gases
Compactibility Rate 45% - 52% 34% - 40% Improves gas venting while maintaining rigidity
Volatile Matter Content High Variation Stable < 2.5% Prevents turbulent gas entrapment
Sand Temperature Ambient Variable Controlled < 45°C Maintains consistent moisture and mold quality

Industry Knowledge FAQ

Q1: How does Anhui Shixuan Machinery Technology Co., Ltd. ensure the pressure-tightness of hydraulic components?

A1: Hydraulic safety is essential for products like brake calipers and cylinders. Anhui Shixuan Machinery Technology Co., Ltd. is certified under IATF16949:2016 and PED, ensuring our ductile iron castings meet international safety standards. As a "Xuancheng City Internet Demonstration Enterprise," we digitally monitor our casting parameters to eliminate micro-porosity, followed by rigorous testing in our CNC machining workshop to verify that every component is leak-free and ready for assembly.

Q2: What technological resources does Anhui Shixuan Machinery Technology Co., Ltd. provide for custom automotive projects?

A2: Since 2016, Anhui Shixuan Machinery Technology Co., Ltd. has focused on technological innovation. We have established an engineering technology R&D center with strong independent R&D capabilities. Our professional team provides specialized mold design and manufacturing for products tailored to each customer's requirements. This expertise allows us to serve global clients like Watson McDaniel and Spirax Sarco with high-precision components that meet exact engineering specifications.

Q3: What are the integrated manufacturing capabilities of Anhui Shixuan Machinery Technology Co., Ltd.?

A3: We offer a comprehensive solution from blank to finished part. With an investment of over 50 million yuan, Anhui Shixuan Machinery Technology Co., Ltd. operates a 100,000-ton annual capacity facility that handles products from 0.5 kg to 80 kg. Our precision machining workshop is equipped with CNC machining centers, CNC lathes, and automatic multi-axis drilling machines, ensuring that our gray iron, ductile iron, and alloy castings are finished to the highest standards before being marketed in Jiangsu, Zhejiang, Shanghai, and overseas.