Auto Industry

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Advantages

The Auto Industry is one of the most demanding sectors in modern manufacturing, requiring strict material properties, dimensional accuracy, and batch consistency. Casting technology plays a core role in producing automotive parts, especially in key systems such as engines, transmissions, chassis, and braking systems, fulfilling crucial functions including load-bearing, sealing, transmission, and safety.

As vehicles in the Auto Industry evolve toward lightweight, high-performance, and new energy designs, castings face higher requirements:
ยท Materials must possess high strength, wear resistance, and heat resistance.
ยท Processes must ensure dimensional accuracy and surface quality.
ยท Manufacturing must balance mass production efficiency and cost control.

Leierwo firmly believes that high-quality casting processes are the foundation for meeting these performance and quality goals in the Auto Industry.
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Application of Casting in Automobile Parts Manufacturing

Auto Industry
Automotive castings
Automotive castings
Shanghai Leierwo Industry & Trade Co., Ltd. is identified as a global expert in precision casting and 3D printing innovative solutions, centered around specialized services in metal casting, industrial 3D printing, and rapid casting. The company possesses extensive experience, having been in the casting and machining field for over 20 years, or over 18 years in the precision casting and metal casting industry.
Focus on the Auto Industry

The Auto Industry is one of the sectors served by Leierwo. The company’s commitment to quality for this sector is demonstrated by its certifications, including ISO 9001:2015 and IATF 16949:2016. Leierwo specifically notes that its IATF16949-certified quality management system is crucial for meeting the automotive industryโ€™s stringent requirements for component performance, consistency, and quality control.

Typical Castings Include

Engine: cylinder block, cylinder head, intake manifold, oil pan, etc.

Transmission: housing, gear housing, connecting flange, end cap, etc.

Brake system: brake caliper, bracket, connecting support, etc.

The Advantages of Leerwo Casting in These Parts

Complex structures can be formed in a single step, reducing subsequent welding and assembly errors.

High strength and heat resistance ensure long-term stable operation of the engine and transmission system.

Lightweight design is feasible, and alloy materials are used to reduce vehicle weight.

Controllable costs and excellent batch consistency make it suitable for large-scale automotive manufacturing.

Using processes such as precision casting, sand casting, and die casting, we provide customers with automotive component castings with stable performance, optimized structure, and batch consistency.

Casting Materials and Process Characteristics

In combination with the company’s actual process capabilities, we flexibly use the following process and material combinations in the production of automotive castings:

Main Materials:
Ductile Iron
Used for pressure-bearing parts such as engine cylinders and brake calipers, with high strength and fatigue resistance.
Aluminum Alloy
Used for transmission housing, oil pan, lightweight parts, light weight and good heat dissipation performance.
Alloy Steel
Used for gears and connecting parts, with strong wear resistance and toughness.
Stainless Steel
Used in high temperature and high corrosion conditions, such as exhaust system components.
Key Processes:

Sand Casting: Suitable for medium-to-large structural parts such as engine blocks and brake calipers, offering stable performance.

Die Casting (Large-Scale Assembly Line Production): Suitable for aluminum alloy housing parts, offering high efficiency and excellent dimensional consistency.

Forging and Welding Assistance: Used for composite manufacturing and structural optimization, enhancing strength and reliability.

Post-processing:

Heat treatment to improve microstructure.

CNC finishing to ensure assembly accuracy.

Surface sandblasting, shot blasting, and coating to enhance corrosion resistance.

Customer Cases

We partner with numerous automotive OEMs and parts suppliers, providing them with high-performance castings:

Engine System: Ductile iron sand-cast cylinder blocks enhance wear resistance and heat dissipation.

Transmission System: Aluminum alloy die-cast housings achieve lightweight design and improve fuel economy.

Braking System: High-strength cast iron brake calipers offer both thermal fade resistance and safety.

These products have been widely used in passenger cars, commercial vehicles, and new energy vehicles, demonstrating stable long-term performance.

Industry Standards and Quality Control

We strictly implement the automotive industry quality management system and international standards to ensure the safety and reliability of each casting.

Implementation Standards:

ยท ISO 9001 / IATF 16949 Automotive Quality Management System ยท GB, ASTM, DIN, and other casting and material standards

Quality Control Process:
Raw material spectral analysis and composition testing
Mold and dimensional accuracy testing
Nondestructive testing (UT/MT/PT) and dynamic balancing testing
Full-process quality traceability management system
With advanced casting technology and strict quality system, Leierwo provides high-performance, lightweight, precise and durable casting solutions for the automotive manufacturing industry.
What We Offer
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Leierwo is committed to providing the highest quality precision metal parts manufacturing services, including precision casting, investment casting, sand casting, and CNC machining. We offer customized solutions and can complete your design within 3โ€“5 weeks, depending on the complexity of the parts. Before mass production, we provide one free sample for testing and approval.
Investment Casting Service
Features: Investment casting has high precision, can adapt to complex shapes, has smooth surface and little material waste.
Applications: aerospace, precision machinery, automobiles, medical equipment, etc.
Sand Casting Service
Features: It uses sand mold, which is low in cost and suitable for large and complex-shaped metal castings.
Applications: automotive parts, mechanical structural parts, large castings.
CNC Machining Services
Features: high precision, complex parts, and mass production.
Applications: molds, medical device parts, aluminum alloy engine cylinder blocks/cylinder heads.
Our Casting Services โ€“ Fufilled Across Metal Grades
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Leierwo possesses extensive expertise across a wide range of alloy grades, enabling our customers to select the ideal materials to optimize their products and meet the most demanding global application requirements. Feel free to explore the alloy series listed below to find the perfect match for your specific needs.
Stainless Steel Castings
Carbon Steel Castings
Alloy Steel Castings
We Provide Comprehensive Manufacturing Solutions
Investment Casting
Sand Casting
3D Printing
Stainless Steel Castings
Carbon Steel Castings
Alloy Steel Castings

Start Your Project with Leierwo

1. Submit Your Inquiry
Send your CAD drawings and 3D files via email, specifying material grade, order quantity, surface finish, or any other relevant details.
2. Cost Calculation
Once we receive your design, our engineering team will carefully evaluate the drawings and calculate the price based on actual production costs as soon as possible.
3. Start Production
Upon pricing approval, our production team will prepare the materials and schedule production promptly.Leierwo always ensures on-time delivery.
4. Arrange Delivery
After production is completed, we will provide packaging details and arrange shipment via sea or air. We support global shipping for every order.

FAQ

We are a factory with over 20 years of experience in casting and machining. We have rich expertise in this industry. If you come across suppliers claiming to produce castings in a wide range of materials (such as steel, iron, stainless steel, copper, etc.), they are likely trading companies. If you see workshops actively producing parts, you can be assured that we are a genuine manufacturer.

Yes, as long as we receive CAD files or compatible 3D models that can be viewed with software like First Quote or Firstcut browser, we can provide a quotation. Please note that 2D drawings alone are insufficient for manufacturing precision components.

We support 3D CAD models from SolidWorks (.sldprt), ProE (.prt), and other CAD systems, commonly in IGES (.igs), STEP (.stp), ACIS (.sat), or Parasolid (.sat) formats.

We have an internal service system that responds to emails within 4 hours. If your request is urgent, please specify it in your email so we can prioritize your inquiry.

For rapid prototyping:
Silica sol casting: 20โ€“30 days
Sand casting: 7โ€“10 days
For mass production with machining included, the typical lead time is 45โ€“60 days.
More complex parts may require a different delivery schedule.

Yes, we provide samples based on your drawings for you to confirm structure and quality. If the sample does not meet your requirements, we will replace it free of charge until it is qualified.

We accept T/T (bank transfer), Alipay, credit card, etc. Typically, we require a 30% down payment upon order confirmation and the remaining 70% before shipment. For custom parts with complex requirements, additional pricing terms may apply.

We have a comprehensive quality control system that covers every step, from raw material procurement to machining processes and final inspection. For critical components, we strictly follow drawing standards and customer specifications.

All customer data is kept confidential. Only trained engineers are authorized to handle production orders. Third-party inspection or factory audits are welcome, or you may use our in-house quality team for final inspection.

Yes, we guarantee that all materials used are 100% genuine and as specified.

We value long-term cooperation and support our customersโ€™ production needs.

We believe every honest customer is a friend, and we treat our partnerships sincerelyโ€”building friendships and strong teams regardless of where our customers come from.

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