Application of HVOF Supersonic Spraying WC-10Co-4Cr in High Pressure Gate Valve（1）

       

Application of HVOF Supersonic Spraying WC-10Co-4Cr in High Pressure Gate Valve

Application of HVOF Supersonic Spraying WC-10Co-4Cr in High Pressure Gate Valve

HVOF超音速喷涂WC-10Co-4Cr在高压闸阀中的应用。

Application of HVOF HVOF WC-10Co-4Cr of the high-pressure valve

HVOF HVOF高压阀WC-10Co-4Cr的应用

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In this paper, the HVOF supersonic spraying process and WC-10Co-4Cr powder are used to strengthen the surface of the working surface of the valve plate of the high-pressure gate valve.

In this paper, the HVOF supersonic spraying process and WC-10Co-4Cr powder are used to strengthen the surface of the working surface of the valve plate of the high-pressure gate valve.

本文采用HVOF超音速喷涂工艺和WC-10Co-4Cr粉末强化高压闸阀阀板工作表面的表面。

In this paper, supersonic HVOF spraying, WC-10Co-4Cr powder of the high-pressure gate valve face plate surface hardening.

本文采用超音速HVOF喷涂，对WC-10Co-4Cr粉末的高压闸阀面板进行表面硬化处理。

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The experimental results show that the bonding strength of the coating reaches 72.63Mpa, and the bonding state between the coating and the substrate is good; the Vickers hardness value (HV0.3) of the coating is 1257.1, the microhardness value of the coating is uniform, and the coating is uniform.

The experimental results show that the bonding strength of the coating reaches 72.63Mpa, and the bonding state between the coating and the substrate is good; the Vickers hardness value (HV0.3) of the coating is 1257.1, the microhardness value of the coating is uniform, and the coating is uniform.

实验结果表明，涂层的结合强度达到72.63Mpa，涂层与基材的结合状态良好。涂层的维氏硬度值（HV0.3）为1257.1，涂层的显微硬度值均匀，涂层均匀。

The results showed that the bonding strength reaches 72.63Mpa, a good state of bonding between the coating and the substrate; Vickers hardness of the coating (HV0.3) of 1257.1, a uniform coating micro-hardness value, induced by a coating

结果表明，结合强度达到72.63Mpa，涂层与基材之间的结合状态良好。涂层引起的涂层维氏硬度（HV0.3）为1257.1，均匀的涂层显微硬度值

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The density and toughness are good; the porosity of the coating is about 1.5%. Passing the 100Mpa water pressure test, there is no leakage on the working surface of the valve plate, indicating that the coating is dense, and the porosity level meets the working needs of high-pressure gate valves.

The density and toughness are good; the porosity of the coating is about 1.5%. Passing the 100Mpa water pressure test, there is no leakage on the working surface of the valve plate, indicating that the coating is dense, and the porosity level meets the working needs of high-pressure gate valves.

密度和韧性好；涂层的孔隙率约为1.5％。通过100Mpa水压测试，阀板工作面无渗漏，表明涂层致密，孔隙度满足高压闸阀的工作需要。

density, good toughness; coating porosity of about 1.5%, by 100Mpa water pressure resistance test, the valve plate face leakage does not occur, indicating that induced good coating density, a high pressure valve to meet this level of porosity required work.

密度高，韧性好；涂层的孔隙率约为1.5％，通过100Mpa耐水压测试，阀板表面不会发生泄漏，表明诱导出良好的涂层密度，高压阀门可以满足此孔隙率水平所需的工作。

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Valves are widely used in various sectors of the national economy such as petroleum, chemical, metallurgy, electric power, textile, light industry, machinery manufacturing, construction and national defense and military industries, and have become indispensable control equipment in various fluid devices.

Valves are widely used in various sectors of the national economy such as petroleum, chemical, metallurgy, electric power, textile, light industry, machinery manufacturing, construction and national defense and military industries, and have become indispensable control equipment in various fluid devices.

阀门广泛应用于国民经济的各个领域，例如石油，化工，冶金，电力，纺织，轻工，机械制造，建筑以及国防和军事工业，并且已成为各种流体设备中必不可少的控制设备。

Valves are widely used in various sectors in petroleum, chemical, metallurgical, power, textile, light industry, machinery, construction economy, and other military and defense, has become an indispensable means of various fluid control devices.

阀门广泛应用于石油，化工，冶金，电力，纺织，轻工，机械，建筑经济以及其他军事和国防领域的各个领域，已成为各种流体控制装置必不可少的手段。

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Gate valve refers to a valve in which the opening and closing body (valve plate) drives the sealing surface of the valve seat to move up and down by the valve stem, which can connect or cut off the fluid passage.

Gate valve refers to a valve in which the opening and closing body (valve plate) drives the sealing surface of the valve seat to move up and down by the valve stem, which can connect or cut off the fluid passage.

闸阀是指一种阀，其中开关体（阀板）通过阀杆驱动阀座的密封面上下移动，该阀杆可以连接或切断流体通道。

Valve means opening and closing member (valve plate) by a stem drive seat sealing surface for the valve lifting movement, can connect or disconnect the fluid passage.

阀装置的启闭部件（阀板）通过阀杆驱动座的密封面进行阀的抬升运动，可以连接或断开流体通道。

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Gate valves are usually suitable for working conditions that do not need to be opened and closed frequently and keep the gate fully open or fully closed.

Gate valves are usually suitable for working conditions that do not need to be opened and closed frequently and keep the gate fully open or fully closed.

闸阀通常适用于不需要经常打开和关闭并保持闸门完全打开或完全关闭的工作条件。

Valve usually frequent open and close, and maintain the gate fully open or fully closed condition.

阀门通常会经常打开和关闭，并保持闸板完全打开或完全关闭的状态。

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Compared with other types of valves, gate valves have the following advantages:

 

Compared with other types of valves, gate valves have the following advantages:

与其他类型的阀相比，闸阀具有以下优点：

Compared to other types of gate valves, it has the following advantages:

与其他类型的闸阀相比，它具有以下优点：

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(1) Small fluid resistance;

(1) Small fluid resistance;

（1）流体阻力小；

(1) fluid resistance;

（1）流体阻力；

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(2) The external force required for opening and closing is small;

(2) The external force required for opening and closing is small;

（2）开合所需的外力小；

(2) a smaller force required for opening and closing;

（2）开启和关闭所需的力更小；

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(3) The flow direction of the medium is not restricted;

(3) The flow direction of the medium is not restricted;

（3）介质的流动方向不受限制；

(3) to the medium is not limited;

（3）对媒介没有限制；

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(4) When fully open, the erosion of the sealing surface by the working medium is smaller than that of the stop valve;

(4) When fully open, the erosion of the sealing surface by the working medium is smaller than that of the stop valve;

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(4) is fully open, the sealing surface by erosion of the working medium is smaller than the cut-off valve;

...

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(5) The body shape is relatively simple, and the casting process is better.

(5) The body shape is relatively simple, and the casting process is better.

（5）体形比较简单，铸造工艺较好。

(5) relatively simple shape, good casting process.

（5）形状比较简单，铸造工艺好。

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At the same time, the gate valve also has the following shortcomings in the engineering application process:

At the same time, the gate valve also has the following shortcomings in the engineering application process:

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At the same time, there is a gate valve also shortcomings in the project application process:

...

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(1) Both the external dimensions and opening height are relatively large.

(1) Both the external dimensions and opening height are relatively large.

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(1) and the opening height dimensions are larger.

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Larger space required for installation;

Larger space required for installation;

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(2) During the opening and closing process, there is relative friction between the sealing surfaces, which is easy to cause scratches;

(2) During the opening and closing process, there is relative friction between the sealing surfaces, which is easy to cause scratches;

...

(2) during opening and closing, the relative friction between the sealing surface, easy to cause abrasions;

...

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(3) Gate valves generally have two sealing surfaces, which makes machining, grinding and maintenance more difficult.

(3) Gate valves generally have two sealing surfaces, which makes machining, grinding and maintenance more difficult.

（3）闸阀通常具有两个密封表面，这使得机械加工，研磨和维护更加困难。

(3) generally has two valve sealing surface, a machining, grinding and maintenance more difficult.

（3）一般阀门有两个密封面，一次机加工，磨削和维护比较困难。

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high-pressure gate valve refers to the working medium is generally at room temperature or high temperature, and the pressure is very high, such as valves for oil extraction and water injection in oil fields.

high-pressure gate valve refers to the working medium is generally at room temperature or high temperature, and the pressure is very high, such as valves for oil extraction and water injection in oil fields.

高压闸阀是指工作介质一般处于室温或高温下，且压力非常高的阀门，例如用于油田采油和注水的阀门。

High-pressure valve means, the working medium is generally at normal or high temperature, high pressure, such as oilfield and water injection valves.

高压阀是指，工作介质一般处于常温或高温，高压下的油田和注水阀等。

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The working medium generally includes gas and liquid medium.

The working medium generally includes gas and liquid medium.

工作介质通常包括气体和液体介质。

Usually a gas working medium and a liquid medium.

通常是气体工作介质和液体介质。

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Valves are generally defined according to the standards listed in Table 1.

Valves are generally defined according to the standards listed in Table 1.

阀门通常根据表1中列出的标准进行定义。

Standard valves generally defined in Table 1.

标准阀一般定义在表1中。

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Table 1 Types of pressure valves

This article reviews the application status of typical internal powder-feeding plasma spray guns at home and abroad, hoping to provide some reference and reference

for plasma spraying practitioners.