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At Henan San Kuang Machinery Technology Co., Ltd., a leading manufacturer established in 2014, we specialize in delivering superior High Precision Stainless Steel Lost Wax Investment Casting Machined Components. Our expertise lies in transforming complex design concepts into reliable, high-performance metal parts that meet the stringent demands of global industries. Operating from our modern facility spanning 10,000-30,000 square meters, we leverage advanced technology and a skilled workforce of 51-100 professionals to ensure every component achieves exceptional dimensional accuracy and surface integrity. We understand that precision is not just a specification but a fundamental requirement for the seamless operation of your machinery, which is why our investment casting process is meticulously controlled from wax pattern to final machining.
Our components are engineered for durability and precision in the most challenging environments. The lost wax, or investment casting, process is ideal for producing parts with intricate geometries, excellent surface finishes, and tight tolerances that are difficult or impossible to achieve with other manufacturing methods. We begin with a precise wax pattern, build a ceramic shell around it, melt out the wax, and pour molten stainless steel into the cavity. This results in a near-net-shape part that minimizes material waste and reduces the need for extensive secondary machining. Following casting, our in-house CNC machining centers perform critical finishing operations to achieve the final dimensions, hole patterns, threads, and surface specifications required by your blueprints.
- Superior Material Properties: We utilize high-grade stainless steels like 304, 316, 316L, 17-4PH, and 15-5PH, offering excellent corrosion resistance, high strength, and good performance at elevated temperatures.
- Complex Geometry Capability: The investment casting process allows for the production of parts with internal passages, undercuts, thin walls, and complex contours without the need for costly assembly of multiple pieces.
- High Dimensional Accuracy and Consistency: Our process control ensures repeatable tolerances typically within CT4 to CT7 (ISO 8062), delivering part-to-part consistency crucial for assembly and performance.
- Excellent Surface Finish: Components emerge from the ceramic shell with a smooth surface (typically Ra 3.2 μm to Ra 6.3 μm as-cast), which can be further improved through machining, polishing, or blasting.
- Integrated Value-Added Services: We provide a complete solution from prototyping to volume production, including pattern making, casting, heat treatment (annealing, quenching, tempering), CNC machining, non-destructive testing (NDT), and surface treatment.
The technical specifications of our precision castings are tailored to each project, but general capabilities are outlined below:
| Parameter | Typical Capability |
| Part Size Range | From a few grams up to approximately 50 kg |
| Standard Dimensional Tolerance | ±0.13 mm per 25 mm or as per ISO 8062 CT4-CT7 |
| As-Cast Surface Finish | Ra 3.2 μm - 6.3 μm (125 - 250 μin) |
| Minimum Section Thickness | Approximately 0.75 mm (0.030 inches) achievable |
| Common Secondary Operations | CNC Milling/Turning, Drilling, Tapping, Grinding, Polishing |
Choosing our precision castings translates into direct benefits for your operation. You gain access to design freedom to consolidate multiple parts into a single, stronger casting, reducing assembly time and potential failure points. The material efficiency of near-net-shape production lowers raw material costs and scrap. Furthermore, our integrated machining ensures supply chain simplification, as you deal with a single source for casting and precision finishing, improving quality control and lead time reliability. This is particularly valuable for industries such as automotive (turbocharger housings, sensors), aerospace (turbine blades, structural brackets), food processing (valve bodies, fittings), and medical equipment (surgical tool components).
Our commitment to quality and reliability is demonstrated by our established track record and certifications. Operating since 2014, our annual export value of US$2.5-5 Million reflects strong, trusted partnerships with clients across North America, South America, Europe, Asia, and Oceania. We hold a comprehensive suite of quality management certifications, including ISO 9001 for quality management systems and IATF 16949 (implied from ISO/TS 16969) for the automotive industry, ensuring our processes are standardized and controlled. Our products are shipped globally via major ports like Shanghai, Qingdao, and Tianjin, ensuring efficient logistics. Partnering with Henan San Kuang means you are not just buying a component; you are securing a reliable supply of precision-engineered parts backed by a robust quality system and years of manufacturing expertise. Contact us today to discuss your project requirements and receive a competitive quotation.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of lost wax investment casting over other casting methods like sand casting?
A: Investment casting provides superior surface finish, tighter dimensional tolerances, and the ability to produce much more complex and intricate shapes with thinner walls. It is ideal for parts that require minimal post-cast machining and high precision.
Q2: What stainless steel grades do you commonly work with?
A: We routinely cast components in austenitic grades like 304 and 316/L for general corrosion resistance, and precipitation-hardening grades like 17-4PH and 15-5PH for high strength. Other grades are available upon request.
Q3: Can you handle both prototyping and high-volume production?
A: Yes, our process is scalable. We can produce rapid prototypes for design validation using quick-turn pattern methods and then transition to full-scale production molds for volumes ranging from hundreds to tens of thousands of pieces annually.
Q4: What quality inspections do you perform on the finished parts?
A: Our quality control includes dimensional checks with CMMs and standard gauges, visual inspection, material chemistry verification (via spectrometer), mechanical property testing, and non-destructive testing (like dye penetrant or X-ray) as specified by the customer.
Q5: What information do you need to provide a quotation?
A: To provide an accurate quote, we typically require 2D drawings (with GD&T) or 3D CAD models (STEP, IGS), material specification, annual quantity estimate, and any special requirements for heat treatment, surface finish, or testing.
Q6: What is your typical lead time for production?
A: Lead time depends on part complexity and order quantity. For standard projects, lead times range from 4-8 weeks for tooling and first samples, with subsequent production runs being faster. Expedited services may be available.
Q7: Do you offer any surface treatments or coatings?
A: Yes, we can arrange for various surface treatments including passivation (for stainless steel), electroplating (nickel, chrome), powder coating, painting, and specialized coatings as per customer specifications.
Q8: How do you ensure consistency in large production runs?
A: Consistency is ensured through rigorous process control, standardized operating procedures (SOPs) aligned with our ISO 9001 system, statistical process control (SPC) where applicable, and regular audits of our production and inspection stages.
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