Qingdao Hilien Machinery Co., Ltd.

Investment Casting

Why Choose Investment Silica Sol Casting?

The Investment casting process Silica sol castings is similar to the water glass process for but different in the Wax type there is called Silicone glue. Silica sol castings are mainly used for products with high corrosion resistance and precision dimensions. The Silica sol castings gives the possibilities to eliminate the need for secondary machining after casting. The alloys typical produces is carbon steel and stainless steel castings. The casting surface of stainless steel is very smooth even meet requirement on Ra 3.2 µ or better, wish make it ideal for industries like Food, pump and water applications.

Investment Silica Sol Casting Benefits

Suitable for size castings ranging from 0,05 kg to 30 kg.

Low tooling cost.

Possibility for 3D printing of wax pattern shortens delivery time by up to 50%.

Minimum wall thickness 2 mm.

Excellent application for surface needs of mirror polishing.

Linear tolerance can be controlled with ±0.1mm, and the surface finish on Ra3.2.

Most common alloys for the Silica Sol process is stainless steel, like SS 201, 301, 304, 304L / 316L, 316, 410, 416, 17-4, 329.

Sand-Casting

Why Choose Sand Casting?

Sand casting is the most commonly used casting process because of the cost effectiveness of the process and the availability of raw materials. Sand casting is a process where the molten metal is poured into a mould made of sand. It is best suited to low-volume or complex non-ferrous castings or large ferrous castings.

Sand Casting Benefits

Low tooling costs and fast set-up compared to other castings techniques.

Complex and intricate castings can be achieved with multiple internal cores.

Up to 75% of the sand used in the process is possible to reclaimed.

High production efficiency (average of 200-300 units per hour).

More flexible castings methods depending on quantities.

Practically possible to cast any material, including those with a high melting point

High-Pressure Die Casting

Why Choose High-Pressure Die Casting?

The High-Pressure Die Castings process produces high volumes of identical, low-temperature metallic components with precision and repeatability. High-Pressure Die Casting requires complex machinery in order to inject molten metal or alloys at high force into a metal die – usually a hardened steel tool.

For Die Gravity Casting the process isn’t automated, in High-Pressure Die Casting it is. This process is suited to high production rates and can be performed at a low cost per unit. The most common alloys used are non-ferrous metals, such as aluminium, zinc and magnesium. Most popular alloy is aluminium A 380, due to its optimal combination of material properties and production workability. It is especially suitable for use in the following sectors: Electronic & Communication Devices, Automotive Parts, Structural Components, Furniture Parts.

High-Pressure Die Casting Benefits

Cost-efficient manufacturing process for high-volume production.

Production lines are not labour intensive, almost everything runs automatically .

Good surface finish (N8 or better) can be manufactured with smooth or textured surfaces, and are easily plated or powder coated.

Very cheap additional machining cost, because often no secondary machining is needed.

Long tool Life  150.000 – 200.000 parts of identical Die Castings can be produced from a Die tooling.

Minimums of 500 up to 100,000 units per series

Highly suitable for complex thin-walled parts.

Lost Foam Casting

Why Choose Lost Foam Casting?

The Lost Foam Casting Process(LFC) is the most modern and innovative technique available on the market today. Lost Foam Casting is a process used to create complex metal pieces and parts in which molten metal evaporates into a foam mould while still being held with sand.

The first step of Lost Foam Casting is the creation of the foam mould. A block of polystyrene foam is cut into the exact shape of the finished product using hand or power tools. For applications where the dimensions of the finished piece must be exact, power tooling is preferred for a more consistent shaping of the foam.

For designers, the Lost Foam Casting Process(LFC)  offers unique freedom in design, because the polymer foam patterns can be composed of several parts and allow for significantly more complex constructions than other moulding tools.

Lost Foam Casting Benefits

Use in precision casting of ferrous and non-ferrous metals.

Suitable for castings between 1 kg – 200 kg.

Cost effective – fewer actions are required compared to Investment Casting (water glass) therefore providing cost effectivity.

Weight reduction – high dimensional accuracy is attained, and thin sections can be cast with a wall thickness to 3.0 mm.

Excellent surface finish, typically from 25µm can be achieved.

Multiple castings can be combined in one mould to increase pouring efficiency.

Foam casting requires no draft to aid removal from the mould.

Very environmentally friendly – energy-efficient casting process with low emissions and closed mould material circulation.