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Wholesale Brake bracket blank - Green Sand Casting QT450-10

Home / Products / Ductile Iron Castings / Green Sand Casting - Automobile Parts / Brake bracket blank - Green Sand Casting QT450-10
Brake bracket blank - Green Sand Casting QT450-10

Brake bracket blank - Green Sand Casting QT450-10

The brake bracket blank is the mounting base blank for the disc brake caliper. It is the initial form without machining. Subsequent precision machining processes, such as turning, milling, and drilling, are required to form a finished bracket for fixing the brake caliper and connecting the steering knuckle. It is a core basic component that ensures the positioning accuracy of the caliper and the braking stability.

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Product details

The Brake Caliper Bracket Blank serves as the critical mounting foundation for disc brake systems, acting as the primary interface between the steering knuckle and the brake caliper. Manufactured via the Green Sand Casting process, the blank is provided in its near-net-shape initial form. It is engineered to undergo subsequent machining processes such as turning, milling, and drilling. As a load-bearing component, the structural integrity of the blank is fundamental to ensuring the positioning precision and mechanical stability of the braking assembly under dynamic stress.

Technical Characteristics

Casting Process: High-precision Green Sand Casting (automated molding line) for consistent dimensional tolerance.
Material Grades: Available in QT500-7 (High Strength Ductile Iron) and QT450-10 (High Ductility Iron).
Microstructure: Controlled nodularity and graphite distribution to minimize tool wear during finishing.
Machining Allowance: Optimized stock allowance designed for seamless integration with CNC machining centers.

Core Advantages

Dimensional Stability: Stress-relieved casting structures ensure long-term geometric retention under thermal cycling.
Load Management: High fatigue strength inherent in ductile iron facilitates efficient absorption of braking torque and vibration.
Scalability: The clay-bonded sand process supports high-volume production cycles with cost-effective unit pricing.

Applications

Suitable for the Tier 1 manufacturing of braking systems across various vehicle segments:
Commercial Vehicles: LCVs and passenger vans.
Heavy-Duty Transport: Logistics trucks and heavy-duty trailers.
Passenger Cars: SUVs and domestic sedans.

Technical FAQs & Solutions

Issue: Machining Hard Spots: We implement precise inoculation control to eliminate iron carbides (chill), ensuring consistent hardness for machining efficiency.
Issue: Internal Porosity: Utilization of casting simulation software to design gating systems ensures adequate feeding in thick-walled sections, increasing the success rate of ultrasonic/X-ray inspections.

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 bracket blank - Green Sand Casting QT450-10 Suppliers and Wholesale Brake bracket blank - Green Sand Casting QT450-10 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 bracket blank - Green Sand Casting QT450-10 Industry knowledge

How to Optimize Green Sand Parameters to Eliminate Surface Sand Wash Defects in Brake Bracket Blanks?

Technical Strategies for Surface Integrity in Brake Component Casting

Surface sand wash is a common defect where the molten metal flow erodes the sand mold wall, leading to sand inclusions and irregular surfaces on the casting. For a critical safety component like the Brake Bracket Blank, these defects can compromise structural integrity and increase CNC machining tool wear. Eliminating these issues requires a precise balance of sand strength, compactness, and moisture control.

Anhui Shixuan Machinery Technology Co., Ltd. utilizes its specialized engineering technology R&D center to optimize these variables. By leveraging high-pressure automated molding lines within our 18,000-square-meter factory, we ensure that every Brake Bracket Blank - Green Sand Casting maintains a high surface finish and defect-free internal structure, meeting the stringent IATF16949:2016 automotive standards.

  • Optimizing Wet Compressive Strength: We maintain high active clay content to ensure the sand grains are firmly bonded, preventing erosion during the high-velocity metal pouring phase.
  • Precision Compactness Control: Anhui Shixuan Machinery Technology Co., Ltd. sets mold hardness targets above 90 (B-scale) to ensure the mold face can withstand the thermal and mechanical shock of the molten iron.
  • Moisture and Additive Balancing: By strictly controlling moisture levels and incorporating high-quality coal dust substitutes, we create a protective gas film at the metal-mold interface, reducing chemical sand sticking and mechanical wash.

Technical Parameter Comparison: Optimized vs. Conventional Green Sand

The following table illustrates how Anhui Shixuan Machinery Technology Co., Ltd. optimizes parameters specifically for heavy-duty automotive brake components:

Sand Parameter Conventional Green Sand Shixuan Optimized Standard Benefit to Brake Brackets
Wet Compressive Strength 120 - 150 kPa 180 - 220 kPa Prevents erosion and sand wash defects
Mold Hardness (B-scale) 75 - 85 90 - 95 Ensures dimensional stability and smooth finish
Compactibility Rate 45% - 50% 35% - 42% Reduces porosity and improves gas venting
Active Clay Content 7% - 8% 9% - 11% Increases thermal stability of the mold wall
Surface Roughness (Ra) 12.5 - 25 μm < 12.5 μm Reduces machining allowance and tool wear

Industry Knowledge FAQ

Q1: How does Anhui Shixuan Machinery Technology Co., Ltd. maintain zero-defect quality for automotive safety parts?

A1: Automotive safety is our top priority. Anhui Shixuan Machinery Technology Co., Ltd. is certified under IATF16949:2016, ensuring a rigorous quality management system for every brake bracket blank produced. With an investment of 50 million yuan in advanced testing and production equipment, we implement digital monitoring as a "Xuancheng City Internet Demonstration Enterprise" to track every batch, ensuring stable quality for customers in Jiangsu, Zhejiang, Shanghai, and international markets like the USA and UK.

Q2: Does Anhui Shixuan Machinery Technology Co., Ltd. offer secondary processing for its green sand castings?

A2: Yes, we provide a complete one-stop solution. Anhui Shixuan Machinery Technology Co., Ltd. operates a precision machining workshop equipped with CNC machining centers, CNC lathes, and automatic multi-axis drilling machines. This allows us to deliver fully machined brake components that are ready for assembly, serving global leaders such as Watson McDaniel and Spirax Sarco with parts that have been cleaned in our automatic cleaning machines and verified for precision.

Q3: What range of casting sizes and materials can Anhui Shixuan Machinery Technology Co., Ltd. handle?

A3: Our facility is highly versatile, with an annual production capacity of over 100,000 tons. Anhui Shixuan Machinery Technology Co., Ltd. can manufacture products ranging from 0.5 kg to 80 kg using green sand and resin sand molding processes. Our expertise covers various gray iron castings, ductile iron castings, and alloy castings, making us a high-starting-point partner for the automotive, hydraulic, and textile machinery industries worldwide.