Customization Butterfly Valve Cast Steel Butterfly Valves Used in The Industrial Field

• Customization: Available
• Media: Gas
• Driving Mode: Worm Gear
• Model NO.: B23
• Connection Form: Clamp
• Structure: Customer′s Demand
• Seal Form: Customer′s Demand
• Valve Stem: Normal
• Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Customer′s Demand
• Valve Body: Casting
• Standard: Customization
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Processing: Sand Casting
• Ingredient Ratio: Elements Such as Manganese, Silicon, Chromium, Et
• Inspection Report: Yes
• Lead Time: 20-40 Days
• Surface Treatment: Powder Coated/Painting/Sandblasting
• Surface Roughness: Ra0.8~Ra12.5
• Size: According to Customer′s Drawings
• Weight: Customization
• Machining: Turning/Milling/Drilling/Grinding/Boring/Planing/B
• Machining Tolerance: 0.002mm, 0.005mm, 0.01mm
• Inspection Tools: CMM/Gauges/Indicators
• Heat Treatment: Quench and Temper
• Transport: by Sea/by Train/by Air/by Truck
• Transport Package: Wood Carton/Box/Pallets
• Specification: According to product specifications
• Trademark: Customer Demands
• Origin: China
• Production Capacity: 50000

Product Description

Product Description

 

Picture	Technical advantages
	Part Name: Butterfly valve
	Process: Lost wax casting/Coated sand casting
	Material: Carbon steel
	Application: Fluid control
	Technical advantages: The coated sand casting uses independent sand preparation, with stable quality, good product surface finish and high production efficiency.

Detailed Photos

Company Profile

Qingdao Starise Metal Technology Co., Ltd. is an industry and trade integration enterprise focusing on the research and development, production and global trade of precision casting parts. Relying on its holding factory, the company has been deeply engaged in the industry for over 30 years. It has a modern production base covering an area of 47,000 square meters (including 10,000 square meters of high-standard production workshops), with an annual production capacity of over 30,000 tons of precision cast steel parts. Its products are exported to more than 20 countries and regions in Europe, America, Asia and so on.

Our History:

1. Founding Period (1996-1998):
Established in 1996 in Pingdu City, Qingdao, China, the company initially focused on delivering high-quality precision casting solutions for the agricultural machinery and automotive axle industries. During this phase, it primarily manufactured small-scale precision castings using traditional silica gel precision casting technology.  

2. Technological Accumulation and Expansion (1998-2014):
In 1998, the company introduced advanced investment casting and sand casting technologies, enabling the production of medium and large-scale precision castings. In 2006, it successfully obtained ISO9001 certification, ensuring consistent quality and reliability in its casting products. Between 2009 and 2014, the company significantly expanded its production facilities, added multiple new production lines, and adopted efficient casting processes, thereby enhancing its production capacity to meet the demands of diverse, multi-batch, and customized product manufacturing.  

3. Brand Marketing (2016-2020):
In 2016, the company began prioritizing brand building by actively participating in domestic and international industry exhibitions to enhance brand recognition. In 2017, it expanded its global market presence and established long-term cooperative relationships with overseas customers. By 2020, the company had successfully developed multiple patented technologies, further improving product precision and quality.  

4. Technological Innovation and Sustainable Development (2018-2024):
In 2018, the company invested in establishing a dedicated research and development center focused on the exploration of new materials and processes. In 2019, it developed an environmentally friendly precision casting process that effectively reduced pollution emissions during production while significantly improving the quality of surface and internal defects in castings. In 2020, the company was officially recognized as a national high-tech enterprise, underscoring its achievements in technological innovation.  

5. Intelligent Manufacturing and Future Vision:
In response to the challenges posed by the global pandemic in 2019, the company swiftly adjusted its market strategy, strengthening online marketing and service capabilities to ensure stable business growth. In 2021, it launched an intelligent manufacturing initiative, integrating automation and information technology to enhance production efficiency and management capabilities.  

6. Looking Ahead:
Starise Metal remains committed to its innovation-driven development philosophy, striving to secure a leading position in the global precision casting industry.

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Processing

Investment casting is a highly sophisticated and intricate manufacturing process renowned for its ability to produce high precision metal components. Whether it's for aerospace, automotive, medical, or various other industries, this process offers unparalleled accuracy and quality. Here are the detailed and refined basic steps involved in the investment casting process, which can help you better understand how these remarkable components come to life.

1. Wax Pattern Creation

The investment casting journey commences with the meticulous creation of wax patterns. Highly skilled artisans carefully inject premium wax material into precisely engineered aluminum molds. These molds are designed to replicate the exact shape and dimensions of the final product with remarkable precision. The resulting wax model serves as the fundamental blueprint and foundation for the entire subsequent casting process. It's crucial to note that the quality and accuracy of the wax pattern directly impact the final outcome of the metal component.

2. Assembly

In the assembly stage, the individually crafted wax patterns are meticulously and carefully attached to a central wax sprue. This assembly is commonly referred to as a pattern assembly or a wax tree. The central sprue plays an indispensable and pivotal role as it will act as the essential channel through which the molten metal will eventually flow, filling the intricately shaped cavities of the wax patterns. This step requires great attention to detail to ensure proper alignment and secure attachment of the wax patterns to the sprue.

3. Shell Building

Once the pattern assembly is complete, it's time to embark on the transformative shell-building stage. In this complex and delicate step, the pattern assembly is repeatedly dipped into a high-quality ceramic slurry. Multiple layers of refractory materials are gradually applied, but it's of utmost importance to ensure that each layer is completely dry before adding the next one. This painstaking process results in the creation of a robust, durable, and thick ceramic shell that envelops the delicate wax patterns, providing the necessary structure and protection for the subsequent steps.

4. Dewaxing

After the ceramic shell has been fully formed, the critical step of dewaxing comes into play. The entire assembly, now encased within the ceramic shell, is placed into a specialized furnace and subjected to high temperatures. This heating process causes the wax inside the ceramic shell to melt and drain out, which is why investment casting is also commonly known as "lost-wax casting." The end result is a hollow ceramic mold with precisely defined cavities that are an exact replica of the original wax patterns, ready to receive the molten metal.

5. Burnout/Preheating

Following the dewaxing process, the ceramic mold undergoes a burnout stage, during which it is exposed to extremely high temperatures. This burnout process serves several important purposes. It ensures that any residual wax is completely removed from the mold, hardens the ceramic structure, and prepares the mold for the upcoming pouring process. Preheating the mold is essential as it helps the molten metal flow more smoothly and fill the cavities evenly, reducing the risk of defects. Once the preheating is complete, the mold is in the optimal condition to receive the molten metal.

6. Pouring

The pouring step is the core and most crucial part of the entire investment casting process. Molten metal, carefully selected to meet the specific metal grade requirements of the component, is meticulously poured into the preheated ceramic mold. The metal flows rapidly into the intricately shaped cavities, filling every corner and crevice of the mold. As the molten metal cools and solidifies within the mold, it takes on the exact shape and dimensions of the original wax patterns, bringing the desired metal component to life. Precise control of the pouring process is essential to ensure the quality and integrity of the final product.

7. Shell Removal

Once the metal has fully solidified, the ceramic shell that once protected the casting needs to be removed to reveal the final metal component. Vibratory methods are commonly used to break away the ceramic shell, carefully unveiling the intricately crafted metal casting hidden within. This step requires careful handling to avoid damaging the delicate metal part.

8. Cut-off

After the shell has been removed, the individual metal castings are separated from the central sprue using specialized saws or cutting tools. This separation process is carried out with precision to ensure a clean and accurate cut, leaving the metal component ready for further processing.

9. Finishing

The final step in the investment casting process involves performing any necessary finishing operations to meet the specific requirements of the component. Depending on the application, various finishing techniques may be employed. For instance, heat treatment might be necessary to enhance the mechanical properties of the metal, such as its strength and hardness. CNC machining can be used to achieve more precise dimensions and tolerances. Shot blasting is often utilized to clean the surface and achieve a fine, smooth finish, while polishing can be done to obtain the desired bright and attractive surface appearance.

Investment casting is a truly remarkable manufacturing process that combines skill, precision, and advanced techniques to produce high-quality metal components that meet the most demanding standards across a wide range of industries.

 

Materials We Cast

 

Material	Carbon Steel	Ductile Iron	Alloy Steel	Stainless Steel	Manganese Steel
Material Grade/Designation	ZG200-400 ZG230-450 ZG270-500 ZG310-570 ZG340-640 Q235	QT350-22L QT400-18 QT400-18L QT450-10 QT500-7 QT600-3 QT700-2 QT800-2 QT900-2 QTD800-10 QTD900-8 QTD1050-6 QTD1200-3 QTD1400-1	ZG20Mn, ZG30Mn ZG40Mn, ZG20Mn2 ZG35CrMnSi, ZG40Cr ZG35CrMo, ZG42CrMo AH36,EH36,FH36 Q420qE,Q500qE 16MnDR 09MnNiDR ZGD410-620 ZGD535-720 ZGD650-830 ZGD730-310 ZGD840-1030 ZGD1030-1240 ZGD1240-1450	06Cr19Ni10 022Cr19Ni10 06Cr17Ni12Mo2 022Cr17Ni12Mo2 06Cr18Ni12Mo2Cu2 015Cr21Ni26Mo5Cu2 12Cr13 30Cr13 68Cr17 022Cr12 10Cr17 019Cr19Mo2NbTi 022Cr23Ni5Mo3N 022Cr25Ni7Mo4N 05Cr17Ni4Cu4Nb 07Cr15Ni7Mo2AL	ZGMn13-1 ZGMn13-2 ZGMn13-3 ZGMn13Cr2 Q355B Q460C 30Mn2Cr10 40Mn18Cr3 ZGMn18Cr2
Standard	AISI - American Iron and Steel Institute ASTM - American Society for Testing and Materials DIN - Deutsches Institut für Normung BS - British Standards ANSI - American National Standards Institute JIS - Japanese Industrial Standards AFNOR - Association Française de Normalisation AS - Standards Australia ASME - American Society of Mechanical Engineers EN--European Norm GB--National Standard Chinese
Note	Apart from the above materials, we can cast based on customers' specifications

Packaging & Shipping

 

Packaging

1. Rust Prevention Treatment: The surface of the cast steel parts is sprayed or smeared with high-quality rust preventives to form a dense anti-rust film, effectively preventing rust during transportation and storage.
2. Buffer Protection: For parts prone to bumps, buffer materials such as foam boards and sponges are used for wrapping to prevent collision damage during transportation.
3. Outer Packaging: Small cast steel parts are packaged in sturdy wooden boxes, and the inside is filled with stuffing to ensure that there is no shaking during transportation; large cast steel parts are fixed with customized metal frames or wooden frames, and if necessary, container transportation is adopted to ensure transportation safety.

Shipping

1. Logistics Selection: We have established long-term cooperative relationships with several well-known logistics enterprises. According to customer needs and the characteristics of the goods, suitable transportation methods such as road transportation, railway transportation, sea freight, and air freight can be selected to ensure the timely and safe delivery of the goods.
2. Delivery Timeliness: For regular orders, the goods will be dispatched within 30 working days after the products are completed and pass the inspection; for urgent orders, the delivery time can be negotiated to be shortened, and the production and delivery processes will be prioritized.
3. Logistics Tracking: We provide a real-time tracking service for the transportation of goods. Customers can query the transportation status of the goods through the order number or logistics tracking number on our company's official website or the cooperative logistics platform, and keep abreast of the transportation location and estimated arrival time of the goods at any time.

FAQ

1. Q: What is stainless steel casting?
A: Stainless steel casting is the common forming process of stainless steel parts by pouring liquid stainless steel into the mould, thus achieving the shape of a product.

2. Q: Which casting method is used to produce stainless steel castings?
A: Normally, investment casting, or lost wax casting, is the correct casting method to produce stainless steel castings, which can creat accurate dimensions, smooth surface finish, and net shape.

3. Q: What are the common grades of stainless steel casting?
A: Common cast stainless steel grades are: 304, 316, 304L, 316L, 17-4 ph, 410, 416, 2205, 2207, etc.

4. Q: What are the advantages of stainless steel casting?
A: Stainless steel casting allows for producing stainless steel components with complex shapes, less or no machining, no quantity limitations, and so no.

5. Q: What type of tooling is required for stainless steel casting?

A: A split aluminum tool or mold is used to create a wax pattern, which is then coated with layers of stucco and ceramic material. Before pouring the alloy, wax will be first melted away, which is where the term "lost wax casting" originated. In other processes (forging, stamping, die casting), tooling is quite much more expensive.
 

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