CN101396789A - Production technique of ball valve core - Google Patents

Production technique of ball valve core Download PDF

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Publication number
CN101396789A
CN101396789A CNA2008102346954A CN200810234695A CN101396789A CN 101396789 A CN101396789 A CN 101396789A CN A2008102346954 A CNA2008102346954 A CN A2008102346954A CN 200810234695 A CN200810234695 A CN 200810234695A CN 101396789 A CN101396789 A CN 101396789A
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CN
China
Prior art keywords
ball valve
valve core
minutes
sintering
core blank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2008102346954A
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Chinese (zh)
Inventor
赵忠平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YANGZHOU TIANHE POWDER METALLURGY INDUSTRY Co Ltd
Original Assignee
YANGZHOU TIANHE POWDER METALLURGY INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YANGZHOU TIANHE POWDER METALLURGY INDUSTRY Co Ltd filed Critical YANGZHOU TIANHE POWDER METALLURGY INDUSTRY Co Ltd
Priority to CNA2008102346954A priority Critical patent/CN101396789A/en
Publication of CN101396789A publication Critical patent/CN101396789A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a production process for a ball valve core, comprising the main steps as follows: (1) forming: iron powder or copper powder or stainless steel powder is reduced or pulverized; the particle size is 80-100 mesh and the content is 90-98wt%; the residual quantity is impurity; the ball valve core blank is prepared in a press by a die; (2) sintering: the ball valve core blank is heated to 700-800DEG C in 20min-1h, sintered for 30min-1h within the temperature range of 700DEG C to melting point temperature of the raw material and slowly cooled to the temperature below 60 DEG C in 30min-1.5h; (3) shaping: the roundness of the sintered ball valve core blank is rectified; 4 electro-plating: the shaped ball valve core blank is processed by hole-sealing in molten zinc stearate or molten white oil or molten silicone oil, then electro-plating is carried out and finally the ball valve core which complies with the requirement is obtained. The method saves the material and has low processing cost; the produced ball valve core has light weight and high surface smoothness.

Description

A kind of production technology of ball valve core
Technical field
The present invention relates to a kind of ball valve core, relate in particular to a kind of production technology of ball valve core of powder metallurgy.
Background technology
In the prior art, the processing method of ball valve core commonly used is by cast iron being cast/be swaged into spherical blank, then through grinding to form ganoid sphere, holing at last and be made into qualified ball valve core.In this process,, use ball valve core weight after this processing technology machine-shaping heavier and influence its environment for use simultaneously because there is wide variety of materials waste in machining, in addition, the cost height of existing processing technology.
Summary of the invention
The invention provides a kind of production technology of new ball valve core, solved raw-material waste problem in the present ball valve core process.
The present invention mainly may further comprise the steps:
1. compression moulding:
With one of reduction or atomized iron powder, copper powder, stainless steel powder, particle diameter 80 orders~100 orders, content are 90wt%~98wt%, and surplus is an impurity, utilizes mould to be pressed into the ball valve core blank in forcing press, and press power is 3T~40T/cm 2
2. sintering:
1) the ball valve core blank was risen to 700 ℃~800 ℃ in 20 minutes~1 hour, 2) in the scope of 700 ℃~raw material melting temperature, carried out sintering 30 minutes~1 hour,
3) in 30 minutes~1.5 hours, slowly cool to below 60 ℃;
3. shaping:
It is regular to carry out circularity through the ball valve core blank of oversintering, improves its circularity and precision;
4. electroplate:
To in stearic acid fusing zinc or white oil or silicone oil, carry out sealing of hole processing through the ball valve core blank after the shaping, improve surface smoothness and hardness;
Electroplate, improve its surface smoothness and wearability, finally be processed into satisfactory ball valve core.
The raw material that is mainly 80 orders~100 order iron powders or stainless steel powder for metal dust only has 6.2~6.4kg/m through the ball valve core density of producing after the above-mentioned processing 3, be better than the ball valve core that utilizes additive method to process greatly.Equally, be mainly the ball valve core density of producing after the raw material process processing of 80 orders~100 order copper powders for metal dust 6.2~6.4kg/m is only arranged 3, be better than the ball valve core that utilizes additive method to process greatly.
Simultaneously, when utilizing the ball valve core of this explained hereafter to be used for the tap ball valve core to produce, process is simple, and manufacturing cost significantly reduces; The utilization rate of raw materials height has been saved a large amount of raw material metals simultaneously; The ball valve core of making change have in light weight, surface smoothness is high, surface of sphere is good, and is wear-resisting, with the valve seat no-float, result of use is good, thereby this product has market prospects very much.
The specific embodiment
Embodiment 1
A kind of production technology of ball valve core may further comprise the steps:
1. compression moulding:
With atomized iron powder, particle diameter 80 orders, content are 97wt%, and surplus is that impurity utilizes mould to be pressed into the ball valve core blank in forcing press, and press power is 3T/cm 2
2. sintering
1) the ball valve core blank was risen to 750 ℃ in 40 minutes,
2) under 750 ℃~1540 ℃ (this temperature is the fusing point of iron), carried out sintering 30 minutes,
3) in 30 minutes, slowly cool to below 60 ℃.
3. shaping
It is regular to carry out circularity through the ball valve core blank of oversintering, improves its circularity and precision;
4. electroplate
To in the stearic acid fusing zinc solution, carry out sealing of hole processing through the ball valve core blank after the shaping;
Electroplate, improve its surface smoothness and wearability, finally be processed into satisfactory ball valve core.
Embodiment 2:
With above-mentioned enforcement 1 difference be: 1. in the compression moulding, metal dust is a reduced iron powder in above-mentioned steps, and content is 90wt%, and particle diameter is 90 orders, and all the other are impurity;
Embodiment 3:
With above-mentioned enforcement 1 difference be: 1. in the compression moulding, metal dust is a reduced iron powder in above-mentioned steps, and particle diameter 100 orders, content are 98wt%, and all the other are impurity;
Embodiment 4:
With above-mentioned enforcement 1 difference be: 1. in the compression moulding, utilize mould to make the ball valve core blank in forcing press formulation material in above-mentioned steps, its press power is 20T/cm 2
Embodiment 5:
With above-mentioned enforcement 1 difference be: 1. in the compression moulding, utilize mould to make the ball valve core blank in forcing press formulation material in above-mentioned steps, its press power is 40T/cm 2
Embodiment 6:
With above-mentioned enforcement 1 difference be: in above-mentioned steps 2. in the sintering:
1) the ball valve core blank was risen to 700 ℃ in 20 minutes,
2) under 700 ℃~1540 ℃, carried out sintering 1 hour,
3) in 1 hour, slowly cool to below 60 ℃.
Embodiment 7:
With above-mentioned enforcement 1 difference be: in above-mentioned steps 2. in the sintering:
1) the ball valve core blank was risen to 800 ℃ in 1 hour,
2) under 800 ℃~1540 ℃, carried out sintering 40 minutes,
3) in 1.5 hours, slowly cool to below 60 ℃.
In the foregoing description 1~7,4. in the electroplating process, stearic acid fusing zinc can substitute with white oil or silicone oil described step, can obtain corresponding effects equally, obtains the ball valve core that density is less, surface smoothness is higher.
Embodiment 8:
A kind of production technology of ball valve core may further comprise the steps:
1. compression moulding:
With stainless steel powder, particle diameter 80 orders, content are 97wt%, and surplus is that impurity utilizes mould to be pressed into the ball valve core blank in forcing press, and press power is 3T/cm 2
2. sintering
1) the ball valve core blank was risen to 800 ℃ in 1 hour,
3) under 800 ℃~1150 ℃, carried out sintering 30 minutes,
4) in 1 hour, slowly cool to below 60 ℃.
3. shaping
It is regular to carry out circularity through the ball valve core blank of oversintering, improves its circularity and precision;
4. electroplate
To in stearic acid fusing zinc, carry out sealing of hole processing through the ball valve core blank after the shaping;
Electroplate, improve its surface smoothness and wearability, finally be processed into satisfactory ball valve core.
Adopt this process when saving material,, saved energy resource consumption more, further reduced processing cost, significantly strengthened this competitiveness of product in market because sintering temperature at 800 ℃~1150 ℃, has reduced the temperature of sintering.
Embodiment 9:
With above-mentioned enforcement 8 differences be: 1. in the compression moulding, utilize mould to make the ball valve core blank in forcing press formulation material in above-mentioned steps, its press power is 9T/cm 2
Embodiment 10:
With above-mentioned enforcement 8 differences be: 1. in the compression moulding, utilize mould to make the ball valve core blank in forcing press formulation material in above-mentioned steps, its press power is 6T/cm 2
In the foregoing description 8~10,4. in the electroplating process, stearic acid fusing zinc can substitute with white oil or silicone oil described step, can obtain corresponding effects equally.
Embodiment 11:
A kind of production technology of ball valve core may further comprise the steps:
1. compression moulding
With atomized copper powder, particle diameter 80 orders, the weight content that accounts for compound is that impurity utilizes mould to be pressed into the ball valve core blank in forcing press formulation material for the 97wt% surplus, press power is 3T/cm 2
2. sintering
1) the ball valve core blank was risen to 800 ℃ in 20 minutes,
2) under 800 ℃~1080 ℃ (this temperature is the fusing point of copper), carried out sintering 30 minutes,
3) in 1.5 hours, slowly cool to below 60 ℃.
3. shaping
It is regular to carry out circularity through the ball valve core writing brush of oversintering, improves its circularity and precision;
4. electroplate
To in the stearic acid fusing zinc solution, carry out sealing of hole processing through the ball valve core blank after the shaping;
Electroplate, improve its surface smoothness and wearability, finally be processed into satisfactory ball valve core.
Adopt this process when saving material, sintering temperature only has 750 ℃~820 ℃, has then saved energy resource consumption more, has further reduced processing cost, has significantly strengthened this competitiveness of product in market.
Embodiment 12:
With above-mentioned enforcement 11 differences be:
In above-mentioned steps 2. in the sintering:
1) the ball valve core blank was risen to 750 ℃ in 40 minutes,
2) under 750 ℃~1080 ℃, carried out sintering 50 minutes,
3) in 1 hour, slowly cool to below 60 ℃.
Embodiment 13:
With above-mentioned enforcement 11 differences be:
In above-mentioned steps 2. in the sintering:
1) the ball valve core blank was risen to 700 ℃ in 20 minutes,
2) under 700 ℃~1080 ℃, carried out sintering 1 hour,
3) in 30 minutes, slowly cool to below 60 ℃.
Embodiment 14:
With above-mentioned enforcement 11 with part be: 1. in the compression moulding, utilize mould to make the ball valve core blank in forcing press raw material in above-mentioned steps, its press power is 9T/cm 2
Embodiment 15:
With above-mentioned enforcement 11 with part be: 1. in the compression moulding, utilize mould to make the ball valve core blank in forcing press raw material in above-mentioned steps, its press power is 6T/cm 2
4. in the electroplating process, stearic acid fusing zinc can substitute with white oil or silicone oil, can obtain corresponding effects equally in the foregoing description 11~15 described steps.
Embodiment 16:
A kind of production technology of ball valve core may further comprise the steps:
1. compression moulding
With atomized copper powder, particle diameter 80 orders, the weight content that accounts for compound is that impurity utilizes mould to be pressed into the ball valve core blank in forcing press formulation material for the 97wt% surplus, press power is 3T.
2. sintering
1) the ball valve core blank was risen to 800 ℃ in 20 minutes,
2) under 800 ℃~950 ℃, carried out sintering 30 minutes,
3) in 1.5 hours, slowly cool to below 60 ℃.
3. shaping
It is regular to carry out circularity through the ball valve core writing brush of oversintering, improves its circularity and precision;
4. electroplate
To in the stearic acid fusing zinc solution, carry out sealing of hole processing through the ball valve core blank after the shaping;
Electroplate, improve its surface smoothness and wearability, finally be processed into satisfactory ball valve core.
Adopt this process when saving material, sintering temperature only has 750 ℃~820 ℃, has then saved energy resource consumption more, has further reduced processing cost, has significantly strengthened this competitiveness of product in market.
Embodiment 17:
With above-mentioned enforcement 16 differences be:
In above-mentioned steps 2. in the sintering:
1) the ball valve core blank was risen to 750 ℃ in 40 minutes,
2) under 750 ℃~950 ℃, carried out sintering 50 minutes,
3) in 1 hour, slowly cool to below 60 ℃.
Embodiment 18:
With above-mentioned enforcement 16 differences be:
In above-mentioned steps 2. in the sintering:
1) the ball valve core blank was risen to 700 ℃ in 20 minutes,
2) under 700 ℃~950 ℃, carried out sintering 1 hour,
3) in 30 minutes, slowly cool to below 60 ℃.
Embodiment 19:
With above-mentioned enforcement 16 with part be: 1. in the compression moulding, utilize mould to make the ball valve core blank in forcing press raw material in above-mentioned steps, its press power is 9T/cm 2
Embodiment 20:
With above-mentioned enforcement 16 with part be: 1. in the compression moulding, utilize mould to make the ball valve core blank in forcing press raw material in above-mentioned steps, its press power is 6T/cm 2
4. in the electroplating process, stearic acid fusing zinc can substitute with white oil or silicone oil, can obtain corresponding effects equally in the foregoing description 16~20 described steps.

Claims (3)

1, a kind of production technology of ball valve core may further comprise the steps:
1. compression moulding:
With one of reduction or atomized iron powder, copper powder, stainless steel powder, particle diameter 80 orders~100 orders, content are 90wt%~98wt%, and surplus is an impurity, utilizes mould to be pressed into the ball valve core blank in forcing press, and press power is 3T~40T/cm 2
2. sintering:
1) the ball valve core blank was risen to 700 ℃~800 ℃ in 20 minutes~1 hour,
2) in the scope of 700 ℃~raw material melting temperature, carried out sintering 30 minutes~1 hour,
3) in 30 minutes~1.5 hours, slowly cool to below 60 ℃;
3. shaping:
It is regular to carry out circularity through the ball valve core blank of oversintering, improves its circularity and precision;
4. electroplate:
To in stearic acid fusing zinc or white oil or silicone oil, carry out sealing of hole processing through the ball valve core blank after the shaping, improve surface smoothness and hardness;
Electroplate, improve its surface smoothness and wearability, finally be processed into satisfactory ball valve core.
2, the production technology of a kind of ball valve core according to claim 1 is characterized in that in the 1. compression moulding process of described step:
With one of reduction or atomized iron powder, stainless steel powder, particle diameter 80 orders~100 orders, content are 90wt%~98wt%, and surplus is an impurity, utilizes mould to be pressed into the ball valve core blank in forcing press, and press power is 3T~40T/cm 2
Described step is 2. in the sintering process,
1) the ball valve core blank was risen to 700 ℃~800 ℃ in 20 minutes~1 hour,
2) under 700 ℃~1150 ℃, carried out sintering 30 minutes~1 hour,
3) in 30 minutes~1.5 hours, slowly cool to below 60 ℃.
3, the production technology of a kind of ball valve core according to claim 1 is characterized in that in the 1. compression moulding process of described step:
With copper powder, particle diameter 80 orders~100 orders, content are 90wt%~98wt%, and surplus is an impurity, utilize mould to be pressed into the ball valve core blank in forcing press, and press power is 3T~40T/cm 2
Described step is 2. in the sintering process,
1) the ball valve core blank was risen to 700 ℃~800 ℃ in 20 minutes~1 hour,
2) under 700 ℃~950 ℃, carried out sintering 30 minutes~1 hour,
3) in 30 minutes~1.5 hours, slowly cool to below 60 ℃.
CNA2008102346954A 2008-11-14 2008-11-14 Production technique of ball valve core Pending CN101396789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
CN101396789A true CN101396789A (en) 2009-04-01

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Country Status (1)

Country Link
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101912967A (en) * 2010-06-02 2010-12-15 深圳市大富科技股份有限公司 Method for manufacturing resonating tubes
CN102019223A (en) * 2010-10-28 2011-04-20 北京理工大学 Jigging medium ball for jigging and preparation method thereof
CN102205416A (en) * 2011-05-19 2011-10-05 东睦新材料集团股份有限公司 Manufacture method of engine tappet
CN103406727B (en) * 2013-08-06 2015-08-19 张家港海陆环形锻件有限公司 The manufacture method of large-scale ball for ball valve
CN105014320A (en) * 2015-07-20 2015-11-04 中山市祥丰瓦斯器材制品有限公司 Valve body manufacturing method
CN106112441A (en) * 2016-08-20 2016-11-16 无锡鹰贝精密轴承有限公司 Spool steel ball assembly technology
CN106112469A (en) * 2016-08-20 2016-11-16 无锡鹰贝精密轴承有限公司 The assembling of spool steel ball and closing device
CN106238737A (en) * 2016-08-29 2016-12-21 海安县鹰球粉末冶金有限公司 Vacuum automobile source pump chamber manufacture method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101912967A (en) * 2010-06-02 2010-12-15 深圳市大富科技股份有限公司 Method for manufacturing resonating tubes
CN101912967B (en) * 2010-06-02 2013-03-13 深圳市大富科技股份有限公司 Method for manufacturing resonating tubes
CN102019223A (en) * 2010-10-28 2011-04-20 北京理工大学 Jigging medium ball for jigging and preparation method thereof
CN102205416A (en) * 2011-05-19 2011-10-05 东睦新材料集团股份有限公司 Manufacture method of engine tappet
CN102205416B (en) * 2011-05-19 2013-08-28 东睦新材料集团股份有限公司 Manufacture method of engine tappet
CN103406727B (en) * 2013-08-06 2015-08-19 张家港海陆环形锻件有限公司 The manufacture method of large-scale ball for ball valve
CN105014320A (en) * 2015-07-20 2015-11-04 中山市祥丰瓦斯器材制品有限公司 Valve body manufacturing method
CN106112441A (en) * 2016-08-20 2016-11-16 无锡鹰贝精密轴承有限公司 Spool steel ball assembly technology
CN106112469A (en) * 2016-08-20 2016-11-16 无锡鹰贝精密轴承有限公司 The assembling of spool steel ball and closing device
CN106112441B (en) * 2016-08-20 2018-07-24 无锡鹰贝精密轴承有限公司 Spool steel ball assembly technology
CN106238737A (en) * 2016-08-29 2016-12-21 海安县鹰球粉末冶金有限公司 Vacuum automobile source pump chamber manufacture method

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