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HAOZHIFENG is a trustworthy metal casting factory based in Qingdao, capable of undertaking custom mold processing work. Our main products include precision investment castings, stainless steel fasteners and wear-resistant cast iron sleeves. As a source manufacturer with full-process production capacity covering mold design, casting forming and finished machining, we customize high-precision metal casting parts in accordance with client requirements, fully satisfying the core demand of overseas purchasers — finding suppliers with stable supply and cost-effective casting parts. We independently complete all core casting procedures in our factory. The professional precision investment casting production line manufactures 304 stainless steel perforated wing nuts with high dimensional tolerance and small precision fasteners, delivering one-stop processing service for metal components. This service greatly simplifies procurement procedures and cuts down the overall order lead time for casting parts. Our factory boasts five mature independent casting technologies to flexibly adapt to clients’varying precision standards and project budgets. Complete customized treatment solutions are available for all casting blanks, including aluminum alloy anodizing and anti-corrosion coating treatment. Every batch of casting parts undergoes rigorous multi-dimensional sampling inspection prior to shipment to fully ensure stable product quality, enabling long-term export cooperation with industrial purchasers worldwide.
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Casting can produce complex shapes that would be otherwise difficult or uneconomical to make by other methods.
Features like internal cavities or hollow sections can be achieved.
Large components can be produced in one-piece cast
Casting is generally less expensive than other manufacturing processes.
Casting foundries often utilize recycled materials thereby reducing waste materials that might otherwise end up in landfills.
Die Casting
Sand Casting
Cold Casting
Investment casting
Coated sand
Download the price list of HAOZHIFENG
Precision Casting Process
1. Die Casting
Die Casting involves pouring or injecting molten metal under high-pressure metal into a precision metal mold cavity at high speed, and the liquid metal is cooled and solidified under pressure to form a casting. This allows each part to be created with high precision accuracy and repeatability.
2. Sand Casting
Sand Casting is a less precise process than die casting with molds which are made primarily of sand with a certain percentage of clay mixed in. The use of sand molds allows for a lower initial set-up cost, and a shorter lead time of product development and first production launch, comparing to other processes. Sand casting can produce very large parts weighing of thousands of pounds.
3.Cold casting
Cold casting uses low-cost silicone production molds cast from a master mold, creating an exact reverse replica. Silicone molds are durable, easy to make, and capture fine surface details. Two-part liquid poly resin is mixed, poured into the mold, and cured chemically. Vacuum chambers remove air bubbles from the resin. Similarly, silicone products can be efficiently cold-cast using thin-walled, low-cost steel molds.
4. Investment Casting
Investment casting is a high-precision near-net-shape forming process. Its core working principle is as follows: first, wax patterns of the parts are produced; the exterior of the wax patterns is repeatedly coated and layered with multiple coats of refractory slurry to form a ceramic shell mold. Afterwards, the internal wax is melted out by heating, and the shell mold undergoes high-temperature calcination. Molten metal is poured into the fully calcined shell mold. Once the metal cools down, the ceramic shell mold is broken to remove the casting.Castings manufactured via this process feature excellent surface finish. The process can replicate extremely complex thin-walled geometries and micro-details, requiring minimal or even no subsequent machining.
5. Coated sand
Coated sand core making is an efficient sand core production process. The sand grains used are coated with phenolic resin on their surfaces, and the sand solidifies and forms sh1pe inside heated metal dies. Production workflow: Preheat the core box to 200–280°C and close the mold; inject resin-coated sand into the mold cavity with compressed air. Sand grains adjacent to the mold wall are heated and cured to form a rigid shell layer with a thickness of 3–10 mm. Loose residual sand inside the hollow shell is poured out to fabricate hollow thin-wall shell cores. After secondary curing, the sand cores are ejected from the mold.A single shell core can be fully manufactured within 1 to 2 minutes. Sand cores produced by this process boast smooth surfaces, high dimensional accuracy, and excellent shakeout performance after casting pouring.
Why Choose HAOZHIFENG For Metal Casting?
One-Stop Service— From tooling design and casting to machining and surface finishing.
Fast Lead Time — Prototypes in 7–15 days, mass production with on-time delivery guaranteed.
Certified Foundry— ISO 9001 & IATF 16949 certified, serving global buyers for 15+ years.
From prototype to mass production, our engineering team supports custom casting projects with fast sampling, competitive pricing and on-time delivery. Contact us today for a free quote and DFM analysis on your casting parts requirements.
Contact us to learn more about aluminum investment casting services and our commitment to casting quality that includes inspection and testing to ensure high quality parts and services.
Casting Parts FAQs
A: Standard inspections include dimensional inspection, visual inspection, surface defect detection, internal defect detection, hardness testing, tensile testing, and chemical composition analysis, ensuring full-quality control of all Casting Parts.
A: Cast iron & ductile iron：Sand casting + resin-coated sand core are the top choices for mass production; investment casting for small high-precision iron parts like Iron Shaft Axle Bushings. Die casting is unavailable;
Carbon steel, alloy steel, stainless steel：Use investment casting for intricate high-tolerance parts, sand casting for large low-cost workpieces. Steel materials cannot be die cast;
Aluminum alloy：Die casting for high-volume thin parts; investment/sand casting for low-volume, high-pressure structural parts;
Copper alloy：Lost Wax Investment for small precision parts, sand casting for large valve/pump bodies, covering diversified customization demands of Lost Wax Investment Casting Parts.
A: We provide 5 mainstream casting solutions: high-pressure die casting for high-repeatability mass parts; low-cost sand casting for large workpieces; affordable cold casting with silicone molds; high-precision investment casting for complex aerospace/medical Casting Parts; resin-coated sand core making to form intricate internal casting passages.
A: Casting parts are metal components formed by pouring molten metal into molds. Common materials include aluminum, steel, iron and copper alloys. Our classic customized products include 304 Stainless Open Hole Wing Nut, Iron Shaft Axle Bushings and various precision Casting Parts.
A: Main applications cover automotive, aerospace and general industrial sectors. Casting fabricates complex geometries, optimizes material usage, and cuts manufacturing costs versus machining. Our Lost Wax Investment Casting Parts are widely applied in high-precision industrial scenarios.
A: It achieves ultra-precise dimensional tolerance and complex integrated shapes without multiple machining, suits tiny stainless steel fasteners and valve fittings such as 304 Stainless Open Hole Wing Nut. The finished surface is smooth with little processing allowance, plus outstanding corrosion resistance for long service life, making our Lost Wax Investment Casting Parts highly competitive.
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