At Sipx, we are aware that carbon steel is a fundamental alloy made up of iron and carbon, frequently with additional elements such as manganese, silicon, sulfur, and phosphorus. Our proficiency lies in utilizing carbon steel’s high strength, wear resistance, and durability, making it perfect for parts that require these characteristics. Our precision casting process involves creating detailed wax models of the parts, coating them with a sturdy ceramic shell, and melting the wax to form a hardened ceramic mold. Subsequently, molten carbon steel is poured into these molds, leading to high-quality, precision-engineered cast components that fulfill your precise requirements.
With the specialty of our engineers and use of advanced machinery, such as the Wenzel 3-Axis Dimensional Measuring Machine for ensuring appropriate dimensions. You will get metal parts with tight tolerances and complex designs. Our capabilities also extend to making rapid samples and offering secondary operation services.
Unless investment casting is being used to produce a very small volume (as is common for artistic work or original jewelry), a mold or die from which to manufacture the wax patterns is needed.
For every individual casting produced through investment casting, a new wax pattern is required, making the number of wax patterns needed equal to the total number of castings. Wax injection machine will do the job.
Assemble the wax patterns to a gate or system. Multiple patterns are assembled to allow for large quantities to be produced at one time. This process will need workers do by hand and be very careful.
creating a ceramic shell around the wax pattern to create a mold for the molten metal. The wax pattern is coated with a ceramic slurry, and repeated several times to create a thick, durable shell
Once the shell has hardened, turned upside down, placed in an special vacuum oven. They are heated to melt and remove the wax, leaving behind a cavity in the shape. The wax removed from the mold can be recycled after proper treatment.
The ceramic mold is preheated to around 1000 – 2000°F (550 – 1100°C) and filled with molten metal, liquid metal flows into the pouring cup, through the central gating system, and into each mold cavity on the tree. Then wait for cooling and solidify
Once the casting solidifies, break the ceramic shell first with a Oscillating machine and then by hand, and use angle grinder to cut the individual investment castings from the sprue. Finally remove the excess metal from casting body by grinding.
Sandblasting, grinding, and machining is performed to finish the casting dimensionally. This process allows for high precision and quality in the final product, making it a popular choice in various industries.
Subsequent processing after casting
Precision Machining Services for Specialized Industries
For manufacturers in industries with stringent requirements—including Medical, Automotive, Aerospace, Elevator, Jewelry, and Optics—precision machining is often essential after casting processes such as CNC machining, drilling, milling, grinding, and lathing.
With ISO 9001 certification and ITAR registration, we provide high-precision machining services tailored to meet and exceed rigorous industry standards. Our advanced equipment and extensive expertise enable us to machine tight-tolerance casting parts with exceptional accuracy, ensuring superior quality, rapid production, and cost efficiency—all customized to your unique specifications.
| Aluminum | 2024, 5083, 6061, 6063, 7050, 7075, etc. |
| Copper Alloy | brass 360, 101 copper, 110 copper, 932 bronze, zinc, etc. |
| Titanium Alloy | grade 2, grade 5, etc. |
| Stainless Steel | 303, 304, 410, 17-4, 2205 Duplex, 440C, 420, 316, 904L, etc. |
| Superalloy | Kovar,Hastelloy，Inconel,monel,etc |
| Zinc Alloy | 3#,6#,9# etc., |
| Engineering Plastic | POM (Delrin), ABS (Acrylonitrile Butadiene Styrene), HDPE, Nylon, PLA, |
| PC (Polycarbonate), PEEK (Polyether Ether Ketone), PMMA (Polymethyl Methacrylate or Acrylic), | |
| PP (Polypropylene), PTFE (Polytetrafluoroethylene), etc. | |
| Other | Other CNC machining materials: Graphite, VeroClear |
Definition & Importance
Casting dimensional tolerance refers to the permissible deviation limits for the dimensions of a casting. Numerous factors in the production process influence these tolerances, which, in turn, significantly impact production costs within a given range. To balance the needs of both suppliers and buyers, adherence to standardized scientific methods is essential.
Chinese & International Standards
In China, the casting dimensional tolerance standard GB/T 6414-1999 (Dimensional Tolerances and Machining Allowances for Castings) aligns with ISO 8062:1994 (Dimensional Tolerances for Castings and Machining Allowance System). This standard serves as the foundation for casting process design and dimensional inspection.
Key Specifications
The standard defines dimensional tolerances for castings produced via various methods, including:
It covers:
Production Volume Considerations
To facilitate selection, the standard also categorizes tolerance levels based on production scale:
This structured approach ensures optimal tolerance selection for cost efficiency and quality compliance.
| Casting Method | Tolerance CT | ||||||||
| Casting Material | |||||||||
| Cast Steel | Cast Iron | Ductile Iron | Malleable Cast Iron | Copper Alloy | Zinc Alloy | Light Metal Alloy | Nickel Based Alloy | ||
| Handmade Sand Casting | 11-14 | 11-14 | 11-14 | 11-14 | 10-13 | 10-13 | 9-12 | 11-14 | |
| Machine Moldeling Sand Casting | 8-12 | 8-12 | 8-12 | 8-12 | 8-10 | 8-10 | 7-9 | 8-12 | |
| Metal Mold Casting or Low Pressure Casting | 8-10 | 8-10 | 8-10 | 8-10 | 7-9 | 7-9 | |||
| Die Casting | 6-8 | 4-6 | 4-7 | ||||||
| Investment Casting | Water Glass | 7-9 | 7-9 | 7-9 | 5-8 | 5-8 | 7-9 | ||
| silica sol | 4-6 | 4-6 | 4-6 | 4-6 | 4-6 | 4-6 | |||
Carbon steel can be cast into a wide variety of shapes and sizes, making it suitable for a broad range of applications across different industries.
Compared to other metal alloys, carbon steel is relatively inexpensive, offering a cost-effective solution for high-volume production.
Carbon steel castings can be easily machined or welded, allowing for ease of post-casting modifications and repairs.
Carbon steel can be cast into a wide variety of shapes and sizes, making it suitable for a broad range of applications across different industries.
We offer comprehensive specifications for our carbon steel products, enabling you to make well-informed decisions. Our detailed parameter tables encompass essential elements such as chemical composition, mechanical properties, and heat treatment capabilities. By comprehending these parameters, you can choose the most suitable carbon steel grade for your particular application, ensuring outstanding performance and durability. Our dedication to transparency and precision ensures that you receive the highest quality materials customized to your exact needs.
| Property | Low Carbon Steel | Medium Carbon Steel | High Carbon Steel |
|---|---|---|---|
| Carbon Content | 0.05%-0.25% | 0.29% to 0.54% | 0.55-0.95% |
| Tensile Strength | 400 – 450N/mm2 | 700 – 850N/mm2 | 800 – 1000N/mm2 |
| Elongation | 15% | 11% | 5-8% |
| Hardness (HB) | 120-180 | 200-300 | 250-400 |
| Characteristics | Offers a range of tensile properties through heat treatment. Heat treatment can provide high surface hardness, wear resistance, and good core ductility. | More durable, flexible, and robust. Good tensile strength, ductility, and impact resistance. Easy to machine in a softened state. | Strong with good shape memory, making it particularly useful for spring manufacturers. |
| Applications | Commonly used as engineering steel in low to medium strength applications like brackets, casings, and connecting rods. | Often used where ductility, good impact, and fatigue strength are needed. Examples include levers, chassis parts, and hydraulic machinery. | Used in high tensile applications, high carbon steel alloys can withstand wear and are suitable for heavy-duty applications like cranks and pin shafts. |
Having amassed many years of casting experience, equipped with top-notch equipment and providing tailored manufacturing solutions, you can rely on us to help you reach the finish line, regardless of whether you possess a time-tested component or are currently in the development stage.
