We custom manufacture cast Venturi tubes by lost foam & shell mold casting. We produce integrated one-piece castings to avoid welding leakage. Available in stainless steel, heat-resistant steel & alloy per ASTM/DIN standards. In-house casting, CNC machining and NDT inspection. Send drawings or samples for your customized quotation.
Please contact gina@guokuncasting.com to get your quotation.
Whether you need simple single-taper venturi or complex multi-port venturi assemblies, we can realize your design from prototype to mass production.
What is lost foam casting process?
Lost-foam casting is a type of evaporative-pattern casting process that is similar to investment casting except foam is used for the pattern instead of wax. The lost foam casting techniques take advantage of the low boiling point of polymer foams to simplify the investment casting process by removing the need of melt the wax out of the mold. Compared with investment casting method and sand casting techniques, lost foam casting is one of the most cost-effective and environmentally friendly metal casting process for creating complex and intricate metal parts by using a foam pattern that evaporates when molten metal is poured into it:
| Lost foam casting process | |
| Create the foam pattern | Create the foam pattern: The pattern is made from pre-expanded polystyrene (EPS) that is heated in an aluminum die to expand and fuse the beads. The pattern can be carved, machined, or created using injection molding. |
| Coat the foam | A ceramic refractory coating is applied to the foam to protect it from the sand and create a barrier |
| Compact the sand | The foam pattern is placed in a flask and surrounded by unbonded sand, which is compacted using a vibration table. |
| Pour the metal | Pour the metal: Molten metal is poured into the flask, causing the foam to evaporate and leaving behind the metal |
| Remove the coating | Remove the coating: The refractory coating is removed to expose the metal part. |
| Surface treatment | Sandblasting and machine process. |
2. Shell mold casting：High dimensional accuracy and smooth casting surface. Great for medium and large batches, stable quality consistency.
All test reports and material certificates can be provided for your project acceptance.
Baoding Guokun Machining Equipment
A High Quality China Foundry！
Guokun Casting, of Baoding Hebei is an ISO 9001-2008 registered iron and steel foundry & supplier of high quality carbon steel, cast iron and machined castings used in power, mining, railway, agricultural, tillage, truck, automobile, pump, valve, motor, pipe fittings and gear industry.
With a montly capacity of 100,000kgs and with more than 25 years of experience ensure the short delivery and the highest valued iron & steel casting parts.
Pump casting, Valve casting, agricultural casting, aircraft casting, railway casting, road casting, motor casting, mining casting, power generation investment casting, Medical casting, marine industry casting
Baoding Guokun Machinery Co., Ltd.
Baoding Guokun Export and Import Trading Co., Ltd
Office Add: 777# Chaoyang South Street, Baoding City, Hebei, 071000, China
Factory Address: Wangdu County, Baoding City, Hebei, 071000, China
Website: www.metalcastingfactory.com
Tel: 86-312-5951319 Fax: 86-312-5951296
Phone: 86-181 3278 9710 (WhatsApp & WeChat)
Email: gina@guokuncasting.com
