CN108103483A - A kind of valve body surface face protective process technology - Google Patents

Abstract

The present invention provides it is a kind of can long-time anti-corrosion and anti-corrosion surface protection process, including following technological processes, sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：The impurity such as greasy dirt, oxide or incrustation scale using alkaline cleaning fluid ablution removal valve body surface face；Cleaning：The chemical substance retained with clear water flushing valve body surface face；Plating solution configures：Plating solution configuration is carried out according to the proportioning of phosphorus content 5% 14%；Preheating：Valve body is put into hot water and is preheated, makes workpiece temperature close to the temperature of plating solution；Coating：Workpiece after preheating is put into plating solution and carries out coating；Plating posttreatment：Cleaned, air-dried and stored successively within an hour after the completion of coating, the present invention can delay the difficult point that valve body gets rusty and corrode too early in use, the service life of promotion valve body to 20 30 it is small when.

Description

A kind of valve body surface face protective process technology

Technical field

The present invention relates to the technical field of surface of oil-gas field drill high voltage parts, are to be related to one kind specificallyValve body surface face protective process technology.

Background technology

The present invention relates to a kind of important spare part valve body of plunger pump product in exploitation of oil-gas field operation, the work(of valve bodyCan be used cooperatively with valve rubber and valve seat, so as to fulfill plunger pump in pressure break, well cementation and acidizing treatment mesolow streamThe sucking of body and the discharge of high-pressure fluid.The plunger pump operation duration is longer, valve body bear for a long time slippery water, ceramsite sand,Acid solution and cement mortar when the washing away of high-pressure fluid mediums, wear, corrode and action of rust when operation stops, service lifeCorrosion and corrosion pit just occurs when 6-10 is small.Surface corrosion is serious and corrosion pit be current valve body dominant failure shapeOne of formula once valve body fails, can seriously affect the drilling operation overall progress and maintenance cost at scene.Carry out valveBody surface anticorrosion and anti-corrosion measure, it is a urgent important job to improve valve body service life.

The content of the invention

It is an object of the invention to overcome the shortcoming of above-mentioned traditional technology, a kind of valve body surface face protective treatment is providedTechnique, can long-time anti-corrosion and anti-corrosion, delay the valve body to get rusty and corrode too early in use, promoting valve body makesWith the service life to 20-30 it is small when.

The purpose of the present invention is what is reached by following technical measures：A kind of valve body surface face protective process technology, to machineValve body after the completion of processing and heat treatment carries out sandblasting and chemical nickel phosphorus plating processing, including following technological process：

Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；

Pretreatment：The impurity such as greasy dirt, oxide or incrustation scale using alkaline cleaning fluid ablution removal valve body surface face；

Cleaning：The chemical substance retained with clear water flushing valve body surface face；

Plating solution configures：Plating solution configuration is carried out according to the proportioning of phosphorus content 5%-14%；

Preheating：Valve body is put into hot water and is preheated, makes workpiece temperature close to the temperature of plating solution；

Coating：Workpiece after preheating is put into plating solution and carries out coating；

Plating posttreatment：It cleaned, air-dried and is stored successively within an hour after the completion of coating.

Further, in pretreating process, using ultrasonic cleaning process alkaline cleaning fluid ablution is replaced to remove valve bodyThe impurity such as greasy dirt, oxide or the incrustation scale on surface.

Further, in pretreating process, ultrasonic cleaning process is combined removal valve body with alkaline cleaning fluid ablutionThe impurity such as greasy dirt, oxide or the incrustation scale on surface.

Further, ensure bath temperature within 85-95 DEG C during coating.

By adopting the above-described technical solution, compared with prior art, it is an advantage of the invention that：

The present invention by a kind of sandblasting add the process of chemical nickel phosphorus plating delayed valve body slippery water, ceramsite sand,The generation of corrosion and corrosion under the use of the high-pressure fluid mediums such as acid solution and cement mortar；

By the present invention, valve body service life can reach 20-30 it is small when, improve the overall progress of oil-gas field drill,Reduce the maintenance cost of operation；

It present invention can be suitably applied on the valve body workpiece of all specifications of plunger pump.

With regard to specific embodiment, the invention will be further described below.

Specific embodiment

Embodiment 1：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Utilize alkaliProperty cleaning solution ablution removal valve body surface face greasy dirt, oxide and incrustation scale impurity；Cleaning：Valve body surface face is rinsed with clear waterThe chemical substance retained；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 90 DEG C；Coating：According to phosphorus content10% proportioning carries out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensures plating solution during coatingTemperature is at 90 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 2：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Utilize alkaliProperty cleaning solution ablution removal valve body surface face greasy dirt, oxide and incrustation scale impurity；Cleaning：Valve body surface face is rinsed with clear waterThe chemical substance retained；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 85 DEG C；Coating：According to phosphorus content10% proportioning carries out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensures plating solution during coatingTemperature is at 85 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 3：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Utilize alkaliProperty cleaning solution ablution removal valve body surface face greasy dirt, oxide and incrustation scale impurity；Cleaning：Valve body surface face is rinsed with clear waterThe chemical substance retained；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 95 DEG C；Coating：According to phosphorus content10% proportioning carries out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensures plating solution during coatingTemperature is at 95 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 4：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Utilize alkaliProperty cleaning solution ablution removal valve body surface face greasy dirt, oxide and incrustation scale impurity；Cleaning：Valve body surface face is rinsed with clear waterThe chemical substance retained；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 95 DEG C；Coating：According to phosphorus content5% proportioning carries out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensures plating bath temperature during coatingDegree is at 95 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 5：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Utilize alkaliProperty cleaning solution ablution removal valve body surface face greasy dirt, oxide and incrustation scale impurity；Cleaning：Valve body surface face is rinsed with clear waterThe chemical substance retained；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 95 DEG C；Coating：According to phosphorus content14% proportioning carries out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensures plating solution during coatingTemperature is at 95 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 6：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Using superGreasy dirt, oxide and the incrustation scale impurity in sound wave ablution removal valve body surface face；Cleaning：Valve body surface face is rinsed with clear water to retainChemical substance；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 90 DEG C；Coating：According to phosphorus content 10%Proportioning carry out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensure bath temperature during coatingAt 90 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 7：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Using superGreasy dirt, oxide and the incrustation scale impurity in sound wave ablution removal valve body surface face；Cleaning：Valve body surface face is rinsed with clear water to retainChemical substance；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 85 DEG C；Coating：According to phosphorus content 10%Proportioning carry out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensure bath temperature during coatingAt 85 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 8：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Using superGreasy dirt, oxide and the incrustation scale impurity in sound wave ablution removal valve body surface face；Cleaning：Valve body surface face is rinsed with clear water to retainChemical substance；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 95 DEG C；Coating：According to phosphorus content 10%Proportioning carry out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensure bath temperature during coatingAt 95 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 9：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：Using superGreasy dirt, oxide and the incrustation scale impurity in sound wave ablution removal valve body surface face；Cleaning：Valve body surface face is rinsed with clear water to retainChemical substance；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 95 DEG C；Coating：According to phosphorus content 5%Proportioning carry out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensure bath temperature during coatingAt 95 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

Embodiment 10：Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；Pretreatment：It utilizesGreasy dirt, oxide and the incrustation scale impurity in ultrasonic cleaning process removal valve body surface face；Cleaning：Valve body surface face is rinsed with clear water to depositThe chemical substance stayed；Preheating：Valve body is put into hot water and is preheated, workpiece temperature is made to reach 95 DEG C；Coating：According to phosphorus content14% proportioning carries out plating solution configuration, and the workpiece after preheating is put into plating solution and carries out coating, ensures plating solution during coatingTemperature is at 95 DEG C；Plating posttreatment：It cleaned, air-dried and is being preserved within an hour after the completion of coating.

The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit andWithin principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention.

Claims (4)

1. a kind of valve body surface face protective process technology, it is characterised in that：To the valve body after the completion of machining and being heat-treated intoRow sandblasting and chemical nickel phosphorus plating processing, including following technological process：

Sandblasting：Spray brown steel sand processing in surface is carried out to the valve body after the completion of heat treatment；

Pretreatment：The impurity such as greasy dirt, oxide or incrustation scale using alkaline cleaning fluid ablution removal valve body surface face；

Cleaning：The chemical substance retained with clear water flushing valve body surface face；

Plating solution configures：Plating solution configuration is carried out according to the proportioning of phosphorus content 5%-14%；

Preheating：Valve body is put into hot water and is preheated, makes workpiece temperature close to the temperature of plating solution；

Coating：Workpiece after preheating is put into plating solution and carries out coating；

Plating posttreatment：It cleaned, air-dried and is stored successively within an hour after the completion of coating.

2. a kind of valve body surface face protective process technology according to claim 1, it is characterised in that：In pretreating process,The impurity such as greasy dirt, oxide or the incrustation scale in alkaline cleaning fluid ablution removal valve body surface face are replaced using ultrasonic cleaning process.

3. a kind of valve body surface face protective process technology according to claim 1, it is characterised in that：In pretreating process,Ultrasonic cleaning process is combined the impurity such as greasy dirt, oxide or the incrustation scale in removal valve body surface face with alkaline cleaning fluid ablution.

4. a kind of valve body surface face protective process technology according to claim 1, it is characterised in that：Ensure during coatingBath temperature is within 85-95 DEG C.