Fundición de válvulas
Ventajas
Leierwo has been deeply involved in the precision casting field for many years, particularly accumulating extensive experience in the manufacture of valve components. The company specializes in the production of precision castings made of carbon steel, alloy steel, and stainless steel—materials commonly used in the valve industry. By utilizing advanced technologies such as melt casting and silica sol processes, the company is able to achieve high-precision molding of complex structural parts, meeting the performance requirements of valves under high-temperature, high-pressure, and corrosion-resistant operating conditions. Furthermore, Leierwo emphasizes custom production based on customer drawings, enabling it to better match valve castings to specific customer needs, ensuring product sealing and structural stability.
Main Material Selection
Valve castings must withstand complex operating conditions such as pressure, temperature, and corrosion. Therefore, material selection should prioritize corrosion resistance, high-temperature strength, cavitation resistance, and good processability. Stainless steel is the preferred choice due to its excellent overall performance.
Common Materials:
Stainless Steel Series:
316/316L: The best choice, resistant to chloride ion corrosion, suitable for marine environments, chemical, and petroleum industries. 304/304L: An economical material suitable for general corrosive environments. 410: Martensitic stainless steel, with some corrosion resistance, suitable for high-temperature steam valves.
17-4PH: Precipitation-hardened stainless steel, with high strength and corrosion resistance, suitable for high-performance valves.
Carbon Steel Series:
WCB (carbon steel general material): Commonly used for general-purpose valves at room temperature.
4130: Suitable for high-temperature and high-pressure valve housings.
Specialty Alloy Series (for high-corrosion/high-temperature environments): 2205 duplex stainless steel: Excellent stress corrosion resistance, suitable for marine and chemical industries. Cobalt alloy (CoCr): such as Co6 and Co12, suitable for valve sealing surfaces with severe high temperature damage.
Common Materials:
Stainless Steel Series:
316/316L: The best choice, resistant to chloride ion corrosion, suitable for marine environments, chemical, and petroleum industries. 304/304L: An economical material suitable for general corrosive environments. 410: Martensitic stainless steel, with some corrosion resistance, suitable for high-temperature steam valves.
17-4PH: Precipitation-hardened stainless steel, with high strength and corrosion resistance, suitable for high-performance valves.
Carbon Steel Series:
WCB (carbon steel general material): Commonly used for general-purpose valves at room temperature.
4130: Suitable for high-temperature and high-pressure valve housings.
Specialty Alloy Series (for high-corrosion/high-temperature environments): 2205 duplex stainless steel: Excellent stress corrosion resistance, suitable for marine and chemical industries. Cobalt alloy (CoCr): such as Co6 and Co12, suitable for valve sealing surfaces with severe high temperature damage.
Key Casting Service Options
Valves have stringent requirements for sealing and pressure resistance, and the choice of casting service directly impacts their functional reliability:
Investment casting: The preferred method for medium- and high-pressure valves. Components such as valve bodies and sealing seats often contain complex internal cavities (such as curved flow paths) and precise mating surfaces (e.g., sealing surface roughness must be ≤ Ra1.6µm). Investment casting can precisely replicate complex shapes, reduce casting defects (such as pores and shrinkage), and mitigate leakage risks. It is particularly suitable for high-pressure valves made of stainless steel and alloys.
Sand casting: Suitable for mass production of low-pressure, large-scale valves. For example, low-pressure gate valve bodies for municipal water supply have relatively simple shapes (mostly symmetrical structures), large production runs, and moderate precision requirements. Sand casting offers significant advantages in terms of low cost and high production capacity.
CNC machining: Focuses on critical mating areas. Valve flanges and stem shaft diameters must precisely align with the pipeline or actuator. After casting, CNC milling and grinding are performed to ensure flatness and perpendicularity tolerances of ≤0.02mm/m, ensuring a tight assembly.
Investment casting: The preferred method for medium- and high-pressure valves. Components such as valve bodies and sealing seats often contain complex internal cavities (such as curved flow paths) and precise mating surfaces (e.g., sealing surface roughness must be ≤ Ra1.6µm). Investment casting can precisely replicate complex shapes, reduce casting defects (such as pores and shrinkage), and mitigate leakage risks. It is particularly suitable for high-pressure valves made of stainless steel and alloys.
Sand casting: Suitable for mass production of low-pressure, large-scale valves. For example, low-pressure gate valve bodies for municipal water supply have relatively simple shapes (mostly symmetrical structures), large production runs, and moderate precision requirements. Sand casting offers significant advantages in terms of low cost and high production capacity.
CNC machining: Focuses on critical mating areas. Valve flanges and stem shaft diameters must precisely align with the pipeline or actuator. After casting, CNC milling and grinding are performed to ensure flatness and perpendicularity tolerances of ≤0.02mm/m, ensuring a tight assembly.
Qué ofrecemos
Leierwo se compromete a brindar servicios de fabricación de piezas metálicas de precisión de la más alta calidad, incluyendo fundición de precisión, fundición a la cera perdida, fundición en arena y mecanizado CNC. Ofrecemos soluciones personalizadas y podemos completar su diseño en un plazo de 3 a 5 semanas, dependiendo de la complejidad de las piezas. Antes de la producción en masa, proporcionamos una muestra gratuita para su prueba y aprobación.
Servicio de fundición a la cera perdida
Características: La fundición de inversión tiene una alta precisión, puede adaptarse a formas complejas, tiene una superficie lisa y poco desperdicio de material.
Aplicaciones: aeroespacial, maquinaria de precisión, automóviles, equipos médicos, etc.
Servicio de fundición en arena
Características: Utiliza un molde de arena, que es de bajo costo y adecuado para piezas de fundición de metales grandes y de formas complejas.
Aplicaciones: Piezas de automoción, piezas estructurales mecánicas, piezas fundidas de gran tamaño.
Servicios de mecanizado CNC
Características: Alta precisión, piezas complejas y producción en masa.
Aplicaciones: Moldes, piezas de dispositivos médicos, bloques de cilindros/culatas de motores de aleación de aluminio.
Nuestros servicios de fundición: en todos los grados de metal
Leierwo posee una gran experiencia en una amplia gama de grados de aleación, lo que permite a nuestros clientes seleccionar los materiales ideales para optimizar sus productos y satisfacer los requisitos de aplicación globales más exigentes. No dude en explorar las series de aleaciones que se enumeran a continuación para encontrar la combinación perfecta para sus necesidades específicas.
Inicie su proyecto con Leierwo
1. Envíe su consulta
Envíe sus dibujos CAD y archivos 3D por correo electrónico, especificando el grado del material, la cantidad del pedido, el acabado de la superficie o cualquier otro detalle relevante.
2. Cálculo de costes
En cuanto recibamos su diseño, nuestro equipo de ingenieros evaluará detenidamente los planos y calculará el precio en función de los costes de producción reales lo antes posible.
3. Inicio de la producción
Una vez aprobado el precio, nuestro equipo de producción preparará los materiales y programará la producción con prontitud.Leierwo siempre garantiza la entrega a tiempo.
4. Organizar la entrega
Una vez finalizada la producción, le proporcionaremos los detalles del embalaje y organizaremos el envío por mar o aire. Todos los pedidos se pueden enviar a cualquier parte del mundo.
PREGUNTAS FRECUENTES
P1. ¿Es usted una empresa comercial o un fabricante?
P2. ¿Pueden cotizar basándose en dibujos 3D?
P3. ¿Cómo se gestionan las RFQ (solicitudes de cotización)?
P4. ¿Cuál es su plazo de entrega típico?
P5. ¿Ofrecen muestras? ¿Son gratuitas?
P6. ¿Qué métodos de pago aceptan?
P7. ¿Cómo se garantiza el control de calidad?
P8. ¿Sus productos vienen con garantía?
P9. ¿Cómo ve su relación con los clientes?
Spanish 
English 
Arabic 
Malay 
German