Investment Castings
Precision, Economy, Metal Parts at High Speed
DSW Industry is a global leader in high-performance castings, servicing sectors such as automotive, rail, construction equipment, material handling, and agricultural machinery.
With over 30 years of experience, we specialise in precision casting and machining. Our strengths encompass strong engineering, a robust quality assurance system, and advanced management practices. We deliver high-quality products and services to both global industry leaders and mid-to-high-end Western customers.
Metal Investment Castings
Advantages of Investment Casting?
Sector Advantages Driving Adoption: The Go-To Solution for Precision Metal Parts
Precision and Accuracy
Produces parts with tight dimensional tolerances (CT6–CT8) and excellent surface finishes (Ra 6.4–12.5 µm). Ideal for complex geometries and thin-walled components.
Superior Surface Quality
Delivers smooth as-cast surfaces, reducing or eliminating the need for post-processing such as grinding or polishing.
Design Freedom
Enables intricate designs, sharp edges, 90° angles, and complex internal features without the limitations of draft angles.
Material Versatility
Compatible with a wide range of metals, including carbon steel, alloy steel, stainless steel, and non-ferrous alloys — offering excellent flexibility for engineering applications.
Complex Part Integration
Allows casting of multi-functional components with integrated features, reducing the need for assembly and improving structural integrity.
Cost Efficiency
Minimises waste through near-net-shape production. Reduces machining, assembly, and material costs — particularly effective for small to medium batch sizes.
Flexible Production
Suited to low to medium volume production runs (from 100 units), with relatively low tooling investment compared to other precision casting methods.
Processing of Lost Wax Casting?
Provides hot chamber die casing for industries
Creating a precise wax pattern and coating it with ceramic to form a mould is the process of lost wax casting, also known as investment casting. The wax is subsequently melted away, leaving a hollow shell into which molten metal is poured. After cooling, the ceramic mould is broken to reveal a detailed metal casting, which is then cleaned and finished. This process is ideal for producing complex, high-precision metal parts with excellent surface quality.
Types of Investment Casting
Traditional Lost Wax Casting
The classic process in which wax patterns are made, coated with ceramic, and subsequently melted out to create a mould for metal pouring.
Lost Foam Casting
Utilises a foam pattern instead of wax, which evaporates during the metal pouring, making it suitable for complex shapes.
Shell Moulding
Involves the creation of a thin ceramic shell around the pattern, ideal for small, detailed components.
At DSW, we specialise in precision investment casting, commonly referred to as lost wax casting.
With extensive experience, we deliver high-quality, complex metal components that meet the strict standards of aerospace, automotive, medical, and industrial sectors.
Carbon, Alloy & Stainless Steel Castings
Versatile Material Capabilities
We cast parts using a variety of grades of carbon steel, alloy steel, and stainless steel. This extensive range of materials enables us to cater to diverse industries and fulfil stringent performance requirements.
Material Standards
International Quality Compliance
Our castings adhere to a comprehensive array of global standards, including:
GB, ASTM, AISI, DIN, BS, JIS, EN, AS, and AAR.
Casting Capabilities
Wide Dimensions and Weight Range
We provide flexible casting solutions with the following capabilities:
- Maximum linear size: 1,000 mm
- Maximum diameter: 600 mm
- Minimum wall thickness: 3 mm
- Casting weight range: 0.10 kg to 80 kg
This versatility enables us to produce both small precision parts and larger structural components.
Diverse applications
Investment casting, or lost wax casting, is a precision manufacturing technique that is ideal for producing intricate metal parts with an excellent surface finish and tight tolerances. Owing to its versatility with materials and design, it caters to a wide range of industries, including:
1. Automotive Industry
- Engine components, turbocharger impellers, transmission parts, and brackets
- Ensures strength, durability, and performance for both standard and high-end vehicles
2. Industrial Machinery
- Pump housings, impellers, valve bodies, gear wheels
- Suitable for heavy-duty use with intricate designs and high strength requirements
3. Agricultural Equipment
- Housings, couplings, levers, and structural parts for tractors and harvesters
- Built for long service life and resistance to harsh outdoor environments
4. Oil & Gas Sector
- Valve components, pipe connectors, seals, and tool parts
- Withstands high pressure and corrosive conditions in both upstream and downstream operations
5. Medical and Dental Equipment
- Surgical tools, dental implants, orthopaedic devices
- Made from biocompatible materials with high precision for patient safety
6. Marine Applications
- Propellers, pump cases, deck hardware, and fittings
- Cast from corrosion-resistant metals for saltwater exposure
7. Firearms and Defence Equipment
- Triggers, receivers, bolt carriers, scope mounts
- Supports reliable performance and precision in safety-critical parts
8. Food and Beverage Processing Equipment
- Sanitary pipe fittings, nozzles, blades, and mixer components
- Produced in food-grade stainless steel to ensure hygiene and corrosion resistance
9. Art, Jewellery, and Decorative Pieces
- Sculptures, fine jewellery, trophies, ornaments
- Allows for detailed, intricate designs with a high-quality finish
10. Renewable Energy Systems
- Wind turbine couplings, solar panel brackets, hydro components
- Designed for durability and performance under varying weather conditions
11. Railway and Public Transport
- Brake shoes, couplings, structural links, and suspension parts
- Provides robustness and wear resistance for long-term operation
12. Construction and Infrastructure
- Pipe brackets, cable supports, safety clamps, scaffolding parts
- Durable and strong components for buildings, tunnels, and bridges
13. Electronics and Electrical Hardware
- Heat sinks, connectors, contact terminals, sensor housings
- Enables complex miniaturised parts with good electrical conductivity
14. Mining and Earthmoving Equipment
- Excavator teeth, wear-resistant liners, cutting edges
- Designed to handle abrasive and impact-heavy environments