Tuangan Injap
Kelebihan
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.
Apa yang Kami Tawarkan
Leierwo is committed to providing the highest quality precision metal parts manufacturing services, including precision casting, investment casting, sand casting, and CNC machining. We offer customized solutions and can complete your design within 3–5 weeks, depending on the complexity of the parts. Before mass production, we provide one free sample for testing and approval.
Perkhidmatan Pemutus Pelaburan
Features: Investment casting has high precision, can adapt to complex shapes, has smooth surface and little material waste.
Applications: aerospace, precision machinery, automobiles, medical equipment, etc.
Perkhidmatan Tuang Pasir
Features: It uses sand mold, which is low in cost and suitable for large and complex-shaped metal castings.
Applications: automotive parts, mechanical structural parts, large castings.
Perkhidmatan Pemesinan CNC
Features: high precision, complex parts, and mass production.
Applications: molds, medical device parts, aluminum alloy engine cylinder blocks/cylinder heads.
Perkhidmatan Tuangan Kami – Dipenuhi Merentas Gred Logam
Leierwo memiliki kepakaran yang luas merentasi pelbagai gred aloi, membolehkan pelanggan kami memilih bahan yang ideal untuk mengoptimumkan produk mereka dan memenuhi keperluan aplikasi global yang paling mencabar. Sila terokai siri aloi yang disenaraikan di bawah untuk mencari padanan yang sesuai untuk keperluan khusus anda.
Mulakan Projek Anda dengan Leierwo
1. Hantar Pertanyaan Anda
Hantar lukisan CAD dan fail 3D anda melalui e-mel, menyatakan gred bahan, kuantiti pesanan, kemasan permukaan atau sebarang butiran lain yang berkaitan.
2. Pengiraan Kos
Sebaik sahaja kami menerima reka bentuk anda, pasukan kejuruteraan kami akan menilai lukisan dengan teliti dan mengira harga berdasarkan kos pengeluaran sebenar secepat mungkin.
3. Mulakan Pengeluaran
Selepas kelulusan harga, pasukan pengeluaran kami akan menyediakan bahan dan menjadualkan pengeluaran dengan segera. Leierwo sentiasa memastikan penghantaran tepat pada masanya.
4. Susun Penghantaran
Selepas pengeluaran selesai, kami akan memberikan butiran pembungkusan dan mengatur penghantaran melalui laut atau udara. Kami menyokong penghantaran global untuk setiap pesanan.
Soalan Lazim
S1. Adakah anda sebuah syarikat perdagangan atau pengilang?
S2. Bolehkah anda memetik berdasarkan lukisan 3D?
S3. Bagaimanakah anda mengendalikan RFQ (Permintaan Sebutharga)?
S4. Apakah masa utama anda yang biasa?
S5. Adakah anda menyediakan sampel? Adakah mereka bebas?
S6. Apakah kaedah pembayaran yang anda terima?
S7. Bagaimanakah anda memastikan kawalan kualiti?
S8. Adakah produk anda disertakan dengan jaminan?
S9. Bagaimana anda melihat hubungan anda dengan pelanggan?
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