Die casting services
- High-precision die-casting tooling and mold development for aluminum and zinc alloys. From DFMEA-driven design reviews to prototype validation, we deliver robust molds optimized for high-volume production, tight tolerances, excellent surface finish, and efficient cycle times. Full-service: mold design, machining, heat treatment, trial casting, machining & finishing, and ongoing mold maintenance.
Production time for small batches: 25-40 days
Hot Chamber & Cold Chamber& Die Casting& Investment casting
Cold & Hot chamber die casting
The molten metal is poured into the shot chamber at room temperature, which is suitable for alloys with higher melting points such as aluminum, magnesium, and copper. It is divided into horizontal cold chamber die casting and vertical cold chamber die casting. The horizontal type is more widely used, featuring high production efficiency and good casting quality.
- Castings have high dimensional accuracy (IT10-IT13) and good surface finish (Ra1.6-6.3μm), which can be directly used for assembly;
- Mainly applicable to low-melting-point non-ferrous alloys (aluminum, zinc, magnesium alloys), not suitable for high-melting-point metals (e.g., steel, cast iron).
High-pressure die casting (HPDC)
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- Uses high pressure to rapidly inject molten metal into a metal die cavity. Suitable for aluminum, zinc and other alloys for high-volume production — short cycles, smooth surface finish, and high dimensional accuracy.
Low-pressure die casting (LPDC)
- Slowly pushes liquid metal into the cavity from the bottom under low pressure. Produces fewer gas porosities and higher density, suitable for thicker-walled aluminum parts requiring better structural integrity.
Gravity die casting (Permanent mold casting)
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- Relies on gravity to pour molten metal into a reusable metal mold. Lower tooling costs than HPDC, suitable for medium-volume production and larger or thicker parts, with better mechanical properties than high-pressure die casting.
Vacuum die casting
- Injects metal under vacuum or reduced pressure to minimize gas entrapment and shrinkage, improving internal density and surface quality — used where structural integrity is critical.
Stereolithography (SLA)
Investment casting + Wax mold casting
- A pattern (wax pattern) identical in shape to the part is made from fusible materials (such as wax or plastic). The wax pattern is coated with multiple layers of high-temperature-resistant and hardened to form a shell (mold shell). The wax pattern is then melted out by heating to create a hollow mold, and finally, molten metal is poured to obtain the casting.
Can cast extremely complex parts (e.g., structures with internal cavities, fine holes, or patterns) with high detail reproduction;
Die Casting Materials Available at FORMEX
- Functional features: Optimal comprehensive performance, containing 8-10% silicon and 3-4% copper. Higher strength and hardness than ADC12 with slightly better heat resistance, suitable for parts bearing certain loads.
- Applications: Automotive transmission cases, engine valve covers, hydraulic valve blocks, high-power motor housings.
- Most commonly used general-purpose zinc alloy
- Applications: Zipper sliders, door lock accessories, electronic connectors, bathroom hardware.
- Functional features: Increased copper content (about 1%) compared to Zamak 3, with 10-15% higher strength and hardness, better wear resistance, suitable for parts subject to slight friction.
- Applications: Gears, toy movements, lighter casings, precision instrument knobs.
- Functional features: Good thermal conductivity (about 100W/m·K), excellent wear resistance, suitable for high-pressure casting (requiring high mold temperature).
- Applications: Plumbing valves, radiator joints, bearing bushes.
- Limitations: Poor corrosion resistance, requiring surface treatment (such as anodizing, electrophoresis).
- Applications: Laptop casings, automotive steering wheel frames, power tool housings.
- Functional features: Strong corrosion resistance, low friction coefficient, suitable for parts subject to sliding friction.
- Applications: Hydraulic pump housings, compressor accessories.
Filter By:
As machined/Deburr/RAW
As machined finish is a raw finish that displays machining marks from the machining process. As standard we machine to 3.2Ra, however you can specify the surface roughness down to 0.2Ra.
As machined/Deburr/RAW
Visible tooling marks and surface scratches.
As machined/Deburr/clear matte anodized
Visible tooling marks and surface scratches.
Anodizing
Anodizing is an electrochemical surface treatment process primarily used for aluminum (and occasionally other non-ferrous metals like titanium, magnesium, or zinc). Its core purpose is to enhance the metal’s natural oxide layer(typically 5–50 μm), creating a thicker, denser, and more durable coating that improves corrosion resistance, wear resistance, and aesthetic versatility (e.g., coloring). Unlike plating (which adds a foreign metal layer), anodizing strengthens the metal’s own oxide—so the coating is integral to the base material and won’t peel or chip easily.
anodizing sandblasting/masking
Removes all machining marks
Green anodized+sand-blasted
Removes all machining marks
Polished-Gradient anodized-Ink masking-De-anodized-Ink removal
Removes all machining marks
anodized +sandblasted-bright
Removes all machining marks
Painting
Painting is a process that forms a continuous, uniform film on the surface of substrates (such as metals, plastics, wood, concrete, etc.) using liquid or paste-like paints. Its core purposes are to achieve three key functions: decorative enhancement, protective shielding, and functional reinforcement.
painted white matte
Removes all machining marks
White painted/Bright
Removes all machining marks
Gradient painting
Removes all machining marks
Paint speckle finishing
Removes all machining marks
powder coating
Powder coating is a dry finishing process used to apply a durable, decorative, and protective layer to a wide range of materials—most commonly metals (e.g., steel, aluminum), but also some plastics, wood, or glass. Unlike liquid paints (which contain solvents that evaporate during curing), powder coating uses finely ground particles of resin and pigment that are electrostatically charged, sprayed onto a surface, and then “baked” to melt and fuse into a smooth, uniform film. This process produces a coating that is far more resistant to chipping, scratching, fading, and corrosion than traditional liquid finishes.
powder coating-black matte
Removes all machining marks
Powder coating-Matte-Texture
Removes all machining marks
As machined/Deburr/clear matte anodized
Visible tooling marks and surface scratches.
As machined/Deburr/clear matte anodized
Visible tooling marks and surface scratches.
LOGO/ laser engraving
Laser engraving a logo utilizes precise laser technology to create sharp, detailed designs on various materials, ensuring high-quality, durable, and customizable branding solutions.
Anodized+laser engraved
Removes all machining marks
Painted+laser engraved+Color Paint Filling
Removes all machining marks
Painting+laser engraved/plastic
Removes all machining marks
Nanoimprint Lithography（NIL）
Nanoimprint Lithography (NIL) is a high-resolution, cost-effective nanofabrication technique used to create nanoscale patterns on various substrates. It works by mechanically imprinting a pre-fabricated nanostructured mold (or template) onto a material, transferring the pattern with high fidelity.
aluminum
Removes all machining marks
Laser color marking
Laser color marking is a precision material processing technique that uses a focused laser beam to create colored marks on the surface of various materials through controlled thermal interaction.
Laser color marking-stainless steel
Visible tooling marks
Zinc-plating
Zinc-plating is a surface treatment process in which a thin layer of zinc is applied to the surface of a metal substrate (most commonly steel or iron) to protect it from corrosion.
Zinc-plating
Visible tooling marks and surface scratches.
Knurling
Knurling is a manufacturing process used to create a patterned, textured surface on metal (or occasionally other materials) to improve grip or enhance aesthetics.
Knurling-steel
Visible tooling marks and surface scratches.
Press Knurling
Visible tooling marks and surface scratches.
Knurling
No visible tooling marks and surface scratches.
Mirror polishing
Mirror polishing is a precision surface finishing process designed to create an ultra-smooth, highly reflective surface on a material—resembling the clarity and shine of a mirror. It eliminates surface imperfections (such as scratches, oxidation, unevenness, or micro-roughness) and refines the material’s texture to a level where light is uniformly reflected, rather than scattered.
Mirror polished
Removes all machining marks
Hot-Dip Galvanizing
Hot-Dip Galvanizing (often abbreviated as HDG) is a thermal surface coating process that applies a thick, durable layer of zinc to iron or steel substrates to protect them from corrosion. Unlike electroplating (a cold, electrolytic process), hot-dip galvanizing involves immersing the metal in molten zinc, creating a metallurgically bonded coating that offers long-lasting protection.
Hot-Dip Galvanizing-steel
Visible tooling marks and surface scratches.
Nickel plating
Nickel plating (also called nickel electroplating) is an electrolytic surface finishing process that deposits a thin, uniform layer of nickel onto the surface of a metal substrate (most commonly steel, copper, brass, or aluminum)，creating a coating that enhances corrosion resistance, wear resistance, or aesthetic appeal.
Nickel plated
Visible tooling marks and surface scratches.
Sand blasting
We offer 30 – 220 grit bead blasting, aqua blasting and all colours of anodising including colour matching.
120# sand-blasted
Removes all machining marks
sand-blasted 200#-Anodized aluminum
Removes all machining marks
chrome plating
Chrome plating (also known as chromium plating) is an electrolytic surface finishing process that deposits a thin layer of chromium onto a metal substrate to enhance durability, corrosion resistance, and aesthetic appeal. It is widely used in both functional and decorative applications due to chromium’s unique properties—hardness, luster, and resistance to tarnishing.
chrome plated-pc
Removes all machining marks
(Color)Paint Filling
Ink filling refers to the process of adding ink (liquid or paste-like coloring/media) into a container, device, or substrate to enable functions like marking, printing, writing, or industrial coating. Its definition and application vary widely across different fields—from everyday stationery to large-scale manufacturing—depending on the type of ink, target device, and end use.
logo laser engraved+Paint Filling（red）
Color filling is a post-processing technique used to enhance laser-engraved designs by adding paint or pigment to the engraved areas, improving visual appeal and brand recognition
Nitriding
Nitriding is a surface hardening heat treatment process that enriches the surface of ferrous metals (primarily steel, cast iron, and some stainless steels) with nitrogen. The goal is to create a ultra-hard, wear-resistant outer layer (called a “nitride layer”) while maintaining the metal’s tough, ductile core—making it ideal for parts that need to withstand friction, impact, or corrosion without breaking.
Nitrided-1045
Removes all machining marks
Phosphating
Phosphating is a chemical surface treatment process primarily used on ferrous metals (e.g., steel, iron) and some non-ferrous metals (e.g., aluminum, zinc). Its core purpose is to form a thin, adherent, and porous phosphate conversion coating on the substrate’s surface through a controlled chemical reaction between the metal and a phosphoric acid-based solution. This coating acts as a “bridge”—enhancing subsequent processes like painting, powder coating, or lubrication, while also providing mild corrosion resistance on its own.
Phosphating
Removes all machining marks
Passivation
The color is most “close to the base material’s original color” and hard to distinguish solely by color.Passivation is a surface treatment process designed to enhance the corrosion resistance of metals—most commonly stainless steel, but also applicable to aluminum, titanium, and other alloys. Its core principle is to create a thin, stable, and inert “passive film” on the metal surface, which acts as a barrier against environmental factors (e.g., moisture, oxygen, chemicals) that cause rust or corrosion.
PASSIVATION-SS304
Visible tooling marks and surface scratches.
PVD plating
PVD Plating (short for Physical Vapor Deposition Plating) is a widely used dry surface coating technology in industrial fields. Its core principle is: in a vacuum environment, physical means (such as heating, sputtering, arc discharge, etc.) are used to convert the “coating material” (metal, alloy, or compound) into gaseous atoms, molecules, or ions. These gaseous particles then deposit and condense on the surface of substrates (such as metals, ceramics, plastics, etc.), ultimately forming a uniform, dense, and strongly adherent functional or decorative thin film.
pvd black
Blackening
Blackening is a surface modification process that forms a uniform, adherent black film on the surface of substrates—most commonly metals (e.g., iron, steel, copper, aluminum)—through chemical reactions, physical deposition, or thermal treatment. Its primary goals are to enhance corrosion resistance, improve aesthetic appearance (creating a matte or glossy black finish), and in some cases, boost functional performance (e.g., reducing light reflection, increasing surface hardness).
blackening+brushed
Removes all machining marks
Brushing
Brushed surface treatment is a physical processing technique that creates uniform, parallel, or regular textures on material surfaces through mechanical friction. It is widely applied to the surfaces of metals (stainless steel, aluminum alloys, copper, etc.) and some plastics, combining both decorative and functional benefits.
Brushed+aluminum
Removes all machining marks
Silk screen printing
Silk screen printing, also known simply as screen printing, is a versatile, widely used printing technique that transfers ink onto a substrate (e.g., fabric, paper, plastic, metal) through a porous mesh screen. A stencil blocks ink from passing through unwanted areas, while the open mesh allows ink to deposit onto the surface below—creating sharp, durable designs even on irregular or textured materials.
Silk screen Plastic
Removes all machining marks
CD pattern
A classic texture form that combines functionality and decorativeness.By processing regular concentric circular or spiral micro-grooves on the material surface, it utilizes the principles of light refraction and interference to present a “dynamic light and shadow effect” similar to that of an optical disc—showing gradient colors or light-dark changes when viewed from different angles, with both a sense of technology and visual layering.
Steel
Removes all machining marks
Aluminum+Knurling
Removes all machining marks
Vacuum Plating
Vacuum plating, also known as vacuum deposition, is a advanced surface coating technology that deposits a thin, uniform layer of material (such as metals, oxides, or nitrides) onto the surface of a base substrate (e.g., plastic, glass, metal, ceramic) in a high-vacuum environment. Unlike traditional electroplating (which relies on chemical reactions in liquid solutions), vacuum plating uses physical processes (evaporation, sputtering, or ion plating) to form coatings.
Vacuum Plated+UV Coating
Removes all machining marks
Chemical etching
to create precise patterns, textures, or designs on materials. While they achieve similar results (removing material to form features), their mechanisms, strengths, and applications differ significantly. Combining them leverages the advantages of both—chemical etching for large-area uniformity and laser etching for high-precision details.
chemical etching+laser etching
Removes all machining marks
Gold/Silver plating
Gold plating and silver plating are two common electroplating or surface coating technologies that deposit a thin layer of gold (Au) or silver (Ag) on the surface of a base material (such as metal, plastic, or ceramic). The core purpose is to combine the base material’s mechanical properties (e.g., strength, cost-effectiveness) with gold/silver’s unique characteristics (e.g., corrosion resistance, conductivity, decorative luster), widely used in electronics, jewelry, industrial parts, and cultural crafts.
99% Gold plated -T2
Removes all machining marks+ mirror polished
silver-plated
Removes all machining marks+ mirror polished
