1、概述
阀杆是阀门重要部件，用于传动，上接执行机构或者手柄，下面直接带动阀芯移动或转动，以实现阀门开关或者调节作用。
2、特点
阀杆在阀门启闭过程中不但是运动件、受力件，而且是密封件。同时，它受到介质的冲击和腐蚀，还与填料产生摩擦。因此在选择阀杆材料时，必须保证它在规定的温度下有足够的强度、良好的冲击韧性、抗擦伤性、耐腐蚀性。阀杆是易损件，在选用时还应注意材料的机械加工性能和热处理性能。
3、常用材料
一般选用410（1Cr13）、420（2Cr13）、F304、F304L、F316、F316L、F321、Inconel 718、Inconel 625、Incoloy825、A105、LF2、Monel 400、Monel 500、F51、F53、F55、17-4PH（630）、钛合金、XM-19等等材料。
4、阀杆工艺
圆棒材头部镦粗的方法来制造阀杆毛坯，对阀杆进行加温、保温、淬火、回火处理、正火处理、二次回火处理、固溶处理、时效处理工艺。车削成型后，螺纹部位采用滚丝机冷压成型，铣床加工阀杆端部和头部的T型槽（扁），磨床处理产品粗糙度，并在阀杆与球体接合部以及阀杆与阀体接触处应有一防静电机构，防止静电在球体上集聚。
| Specifications | Valve stem/Spindle/Shaft |
| Product ID | DHDN200 |
| Material: | STS420 |
| Dimension: | 1.Rod:Φ30mm
2.Length:91mm
3.Head:30mm
4.End:Φ65mm |
| Tolerances: | 1.Rod:0.05mm
2.Length:0.10mm
3.Head:0.05mm
4.End:0.05mm |
| Tolerances of geometrical characteristics: | 1.Head Parallelism:0.1mm
2.Head Symmetry:0.1mm
3.Head and End Perpendicularity:0.1mm
4.End Symmetry:0.1mm
5.End and Rod Coaxiality:0.1mm
6.Rod total run-out:0.1mm |
| Surface roughness: | Ra:0.8~1.6
1.Rod:.0.912
2.Head:1.146
3.End:1.046 |
| Packing methods: | Each expandable polyethylene packing, then Wood case |
| Ball valve stem | |
| Used field: | large and medium ball valve in oil, gas, water conservancy, pharmaceuticals, Chemical, heating equipment industry field. |
| Export: | America,Europe,Asia |
| Material: | 304,316,304L,316L,630(17-4PH),410 ,420
Material could be each AISI grade or ASTM grade. |
| Nominal Size: | DN15-500 |
| Place of Origin: | Ningbo China |
| Brand Name: | DH |
| Packaging Detail: | Standard export packing: Hardcard carton for small in size and lightweight product,Wooden box. |
| Delivery Detail: | 30 days depends on the demand quantity |
| Certificate: | ISO 9001 |
| Equipment List | Sawing Machine,Forging machines,heat-treatment equipment,Lathes,Milling machines,Drilling machines,Threading Machine,Grinding machines,wire cutting machine,Engraving machines |
| Our advantages: | Top quality, as a result of specialization and standardization!
Best price, as a result of direct selling! Direct selling is our marketing mode, so the clients can get the best price from our factory.
Strong engineering team makes high quality; own test equipments and 100% inspection prior to each shipment |
| After-sale services | We insist on offering top class product and service.If any questions related our products feel freely to contact us. |
| Standard/non-standard parts | OEM/ODM is available
Ball Valve stems in different sizes as per drawing requests.
We are able to machine different sizes of ball stems. |
| Minimum Order | According to customers requirements. |
| Remark | We can also produce according to customer\'s size |
| http://wanglycos.1688.com/ |
| Email:wanglycos2000@sohu.com |
| Mobile:+8613819870227 | |
| Fax: +86574-88471518 | |
