China best Yg11 API V11-225 Tungsten Carbide Balls for Valve Pair for Oil Industry with Free Design Custom

Product Description

[ Product Name ]

YG11 API V11-225 Tungsten Carbide Balls for Valve Pair for oil industry

[Quick Futures]

1. High wear resistance. 
2. 5 Tons sell a month.
3. Various types available. 
4. ISO9001:2008,CQC.
5.Supply  YG11 API V11-225 Tungsten Carbide Balls for Valve Pair
6.18 tons output a month

 [Product Show]

1.Introduction
Tungsten carbide balls for valves are widely used in where extreme hardness and wear resistance is Required. Such as: Bearings, ball screws, valves and flow meters pen,spraying machines, pump, machinery parts, oil, hydrochloric Zcid lab,
hardness measuring instrument, and so high-end industry. 

Material:YG8,YG10,YG11,etc.

Size:V11-106,V11-125,V11-150,V11-175,V11-225,V11-250,V11-375.

2.More pictures for API V11-225  tungsten carbide ball for valves

 

3.Use with the cabride seat for oil pump

Also can do finished one:

[Packing]
In common:
Firstly use inner boxes,then to outer boxes or do as customer requested.

[Shipping Methods]
Shipment methods:By air or sea,DHL,UPS,FEDEX,TNT or as your resquest.
 

[How Carbide Powder is Pressed]

1.Tungsten carbide  shapes are made from a powder which is typically tungsten, carbon, cobalt and wax to bind it all together. 
 

2.Carbide shapes are made 3 ways; pressing in a die, “whittling” a shape from a green piece of carbide or grinding a shape from a finished piece of carbide. 

3.This is a carbide press.  At top is a ram.  The powder is poured into the press cavity (the die) then the ram comes down and compresses the powder.  Once the powder is fully pressed the top ram withdraws.  There is a second ram at the bottom of the cavity that comes up and pushes the part out of the cavity. 

4.The pressed parts are then presintered.  In this step the wax is melted out.  This leaves a piece of “green carbide” or “green state carbide”.  Since the wax has been melted out it is just powder pressed together.  It is actually weaker than side walk chalk.  It can be machined easily in this state although great care is required.

5.It is at this step that carbide parts get chipped edges.   Some parts, such as saw tips, are made in large and very large batches.  They are moved by conveyors and often poured into trays for final sintering.  If this not done carefully 1 square edge impinging on another can cause chipped edges in the carbide parts.    By contrast you can use a .410 shotgun to fire fully sintered saw tips at a concrete block wall without damaging the saw tips. 

6.The final step is sintering in which the carbon is forced into a relaxed tungsten matrix creating tungsten carbide grains and those grains are enveloped in a binder or matrix of cobalt of similar. 

 

7.During the final sintering the parts shrink dramatically.  Exactly how much shrinkage will occur is difficult to predict exactly.  Parts are usually designed to be produced a bit oversize.

[Our Promise]
1.100% virgin raw material. 

2. Sintered in HIP Furnace. 

3. Size  perfect as per your requirements .

4. Professional suggestion on products .

5. Feedback within 12 hours.

6. ISO9001: 2008 certificate, ISO14001:2004,SGS.

7. Fully adopted in advance technology and equipment. 

8. Professional manufacture for tungsten carbide items more than 11

years experience. 

9. Fully adopted in advance technology and equipment. 

10. Quality Control System and strict inspection.

11.Perfect sell-after service for all. 
[Company Brief Introduction]
We(HangZhou Jinding) established in 2004 with a total 3500 square meter factory with a year output 200 Tons.We are the professional manufacturer in high-tech plant of ZheJiang Province.Also have 10 years OEM experiece in China.High quality is our life to do CZPT business.Welcome to your coming!

 

[Competitive Advantage]

 

10 years manufacture experience in tungsten carbide

 

Implement strict quality testing and control procedure to make superior quality. (ISO9001)

 

Fexible payment terms(L/C, T/T, western union,money gram, etc.)

 

Reply your inquiry within 10 hours

 

We are professional factory, so our price is lower than others

 

Professional sales person

 

 

Perfect Oral English communication service
 

[Any question or requirement , please contact us,we are glad to help you]
Tel:
 Website: jdcarbide

 

Material Virgin,JD258
Size V11-106,V11-125,V11-150,V11-175,V11-225,V11-250,V11-375
Applicaition Widely used in oil pump,pem,etc.
Sells quantity a month 5 Tons
Advantage Free sample,best price,fast sent 

Screw Shaft Types

If you’re looking for a screw shaft, but aren’t sure which type to buy, you’re in luck. In this article, we’ll talk about the different types, including Threaded shank, Round head, and Machined. Once you’ve read it, you’ll know which type to buy. Then, you can decide whether you want a ball screw nut or a threaded shank.

Machined screw shafts

Besides the standard stainless steel shaft, manufacturers also provide a variety of other materials, such as titanium, bronze, and brass. In addition to stainless steel, manufacturers also provide a variety of top-coating options, including zinc, brass, and chromium. Aluminum screws are not particularly durable and are easily affected by weather. Most screw shafts feature self-locking mechanisms. They are especially useful in C-clamps, vises, and screw-top container lids.
For applications where accuracy is vital, a ball screw shaft needs to be annealed. A heat treatment can be performed on the ball screw shaft to ensure that both ends are heated evenly. In this process, the shaft will be more durable, while maintaining its high-precision properties. These screw shafts are a key component in computer-controlled motion-control systems, wire bonding, and other industries that require high-precision and high-quality performance.
Depending on the material used, screw shafts can be made of stainless steel or titanium. High-precision CNC machines and lathes are typically used to manufacture screw shafts. Various shapes and sizes are available, each with a specific application. Whether you need a small or large screw, you can find 1 to fit your needs. And since each size requires a different material, your choice of material is important as well.
In general, the materials used for machining screw shafts are steel, stainless steel, titanium, brass, bronze, and aluminum. Metals that resist corrosion are also commonly used. Other materials for screw shafts are Teflon, nylon, and nylon. You can also find threaded screw shafts in materials such as porcelain, glass, and ceramic. If you want to use your screws in a unique material, consider purchasing a customized one.
screwshaft

Ball screw nuts

If you have a screw shaft, the last thing you want to worry about is the ball nut slipping off. To prevent this, you can place a temporary stop in the shaft’s grooves to ensure that the ball nut does not slide off. When you remove the stop, you can then install the ball screw nut. But, before you can install the ball screw nut, you have to make sure that you have a good grip on the shaft.
When selecting ball screw nuts, it’s important to consider how much preload you need to apply to avoid excessive backlash. Preloading eliminates this problem by making the ball nut compact. It also prevents backlash, which is lost motion caused by clearance between the ball and nut. Backlash disrupts repeatability and accuracy. This is where spacer preloading comes in. You can insert a spacer between the 2 ball nuts to transmit the force to the nut. However, you should keep in mind that this method reduces the load capacity of the ball screw.
The critical speed of a screw is the maximum rotating speed before it whips. This critical speed is influenced by several factors, including the diameter of the screw shaft, the number of support elements, and the material. By adjusting these factors, you can reduce the number of components used and the amount of time it takes to assemble the screw shaft. In addition, you can also reduce the number of components and avoid stacking tolerances. However, the critical speed of plastic nuts is limited due to sliding friction.
The ball screw nut has several characteristics that make it unique. Its most prominent feature is the presence of ball bearings. These balls help reduce friction between the screw nut and the shaft. Without ball bearings, the friction would be too high to function properly. Another important characteristic is the groove profile of the nut and ball. These 2 features ensure that the ball and the nut meet at 2 points. You’ll be amazed by the results of the work of these ball screw nuts.
screwshaft

Threaded shank

Wood screws are usually not fully threaded because the shank has an unthreaded portion at the top. This shoulder part forces the screw to compress 2 pieces of wood, which prevents the screw from overheating and compromising the materials strength. As the screw is threaded partially up, it is not as difficult to remove as a fully threaded screw. However, it is important to note that a wood screw will not hold as tightly as 1 with a fully threaded shank.
In addition to being universal, screw threads can be of different sizes. For example, a M8 screw has a thread pitch of 1.25 mm. To avoid confusion, screw thread pitches are commonly given with a multiplication sign. For example, M8x1 means that the screw is 8 mm in diameter but has a thread pitch of 1 mm per 360-degree rotation. Those who are not familiar with these dimensions may find it confusing.
The OD of the threaded portion of a bolt is generally smaller than the OD of the nut. If the shank is too deep for the nut to fit, the threads may bottom out. This is why it’s important to use a thread-cutting bit with a small thread diameter. You can use a micrometer or caliper to measure the thread diameter. This tool will also allow you to easily identify which screw size fits where and how well.
The metric system is the most widely used. Fasteners with DIN numbers are generally metric in size. This makes them very useful for industrial settings. You can find metric-sized screws anywhere, as long as you buy them from a reputable manufacturer. These fasteners also come with a dog point, which is used for safety wire. If the screw needs to be replaced, the shank can be drilled with a hole for a safety wire or for a dog-point.

Round head

A round head screw is the most common type used for machine screws. Other common types include truss head, flat head, and hexed head. Each has a different profile and are used for different purposes. A round head screw is typically wider than a flat or a hexed head, and has a slightly rounded surface. These screws are useful for projects involving sheet metal or sheet-metal parts. Round heads are usually slightly wider than a hex head screw, and they may also be used as a substitute for washers in certain applications. However, truss heads are not necessary for every project.
A wood screw has a smooth shank that protrudes above the surface of the material it is attaching. A metal screw has a threaded shaft that is fully threaded from head to point, and a fully threaded shaft provides more bite. Two common head styles are round head and pan head. If the task requires the screw to be flush or countersunk, the round head will be the best choice.
Another type is the Reed & Prince screw drive. These are similar to Phillips screws but have a 75-degree V shape. They are commonly used in marine hardware and are also known as BNAE NFL22-070. This type is also used for steel plate hangers. In addition to round head and pan head screws, there are a variety of other screw types. You can even get a head with a slotted head if you know where to look.
Screw diameters are specified according to the ISO 261 or ISO 262 standards. An M8 screw has a diameter of 8.25 mm. The M8 screw has a pitch of 1.25 mm, which is equivalent to 1 mm per 360 degrees. There are several other standard screw sizes and thread diameters available. You can find them all by consulting the relevant standards. But remember, the metric system is the most popular.
screwshaft

Self-locking mechanism

A self-locking mechanism for a screw shaft is a device that secures the screw to its supporting member in a failure position. The locking mechanism provides a positive connection between the screw shaft and the control surface during normal operation, and locks the screw to its supporting member when the screw fails. Previous attempts to solve this problem have typically used secondary nuts with free play on the screw, which were intentionally designed to jam when loaded. However, such a device can be unreliable, which is why the present invention offers a more robust and reliable locking mechanism.
The self-locking function of a screw depends on several factors, including its pitch angle and the coefficient of friction of the threads. The angle of friction must be less than the tangent of the material pairing to prevent untightening of the screw. Screws with self-locking mechanisms have an efficiency e lower than 50%, which is less than half. Self-locking screws also have the benefit of being less efficient than a standard screw.
Unlike a normal screw, a self-locking screw can be turned in either direction. The nut 22 rotates with the screw shaft, and the member 23 is translated in an axial direction. Regardless of the direction of the rotation of the screw, this axial translation will result in the opposite moment to that input moment. While screw self-locking mechanisms are typically less expensive, they are more reliable and durable.
Another important feature of self-locking screws is that they are not susceptible to independent loosening. The screw cannot rotate without a certain amount of torque. In addition, a self-locking screw shaft must have a small wedge with a smaller half-angle than the arctangent of the static friction. This means that the torque applied by the driver must be greater than the torque needed to overcome the friction.

China best Yg11 API V11-225 Tungsten Carbide Balls for Valve Pair for Oil Industry   with Free Design CustomChina best Yg11 API V11-225 Tungsten Carbide Balls for Valve Pair for Oil Industry   with Free Design Custom

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