CN104846298A - Manufacturing technology of layered overflow valve - Google Patents
Manufacturing technology of layered overflow valve Download PDFInfo
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- CN104846298A CN104846298A CN201510190007.9A CN201510190007A CN104846298A CN 104846298 A CN104846298 A CN 104846298A CN 201510190007 A CN201510190007 A CN 201510190007A CN 104846298 A CN104846298 A CN 104846298A
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Abstract
The invention discloses a manufacturing technology of a layered overflow valve. Chemical ingredients of an alloy billet comprise, by weight, 0.41-0.44% of B, 11.06-11.08% of Cr, 0.43-0.45% of Ni, 0.21-0.25% of N, 0.05-0.07% of C, 0.17-0.21% of Mo, 0.74-0.78% of Cu, 0.065-0.085% of W, 0.44-0.46% of Si, 0.13-0.17% of Mn, 0.74-0.77% of Ti, 0.041-0.044% of Se, 0.012-0.014% of S, 0.017-0.019% of P and the rest of Fe and unavoidable impurities. The technology provided by the invention is low-cost; the technological process is safe, stable, green and environmentally friendly; and the product is resistant to strong acid/alkali and corrosion resistant, is not easy to age and has long service life.
Description
Technical field
The invention belongs to technical field of hydraulic equipment, relate to a kind of hydraulic pressure fuel tap, particularly a kind of manufacturing process of stack-up type surplus valve.
Background technology
Valve is function unit in pipeline fluid delivery system, and it is used to change path section and medium flowing direction, has the functions such as water conservancy diversion, cut-off, throttling, non-return, shunting or overflow release.In the technical support that valve is produced and researched and developed, state's inner valve falls behind unlike external valve, and products a lot of on the contrary can compare favourably with international business in technology and innovation, and the development of domestic valve industry moves ahead toward the direction of high-end modern.
Under industrialization, urbanization, reform and globalization four great promote, China's valve equipment manufacture prospect or broad, following valve industry high-endization, production domesticization, will be that valve industry will develop Main way from now at modernization.Pursue constantly innovation, for valve enterprise creates the market made new advances, enterprise could be allowed to seek survival in increasingly competitive pump valve industry spring tide, try for the development.Along with the development of valve gate technology, constantly widening of valve applications field, valve standard corresponding is with it also more and more indispensable.In the period of valve industry product introduction one innovation, not only product category needs to update, and enterprise internal management also needs to deepen reforms according to the standard of industry.Therefore, need, while fully using existing standard, to look forward to the future, work out and can apply to new standard in the future and new system, thus the development that propulsion valve technology is higher level.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, and provide a kind of manufacturing process of stack-up type surplus valve, present invention process is simple, with low cost, technological process safety and stability, environmental protection, product strong alkali-acid resistance corrodes, not easily aging, long service life.
In order to solve above technical problem, the invention provides a kind of manufacturing process of stack-up type surplus valve, concrete steps are as follows:
(1) chemical composition of alloy billet and mass percent is selected to be: B:0.41-0.44%, Cr:11.06-11.08%, Ni:0.43-0.45%, N:0.21-0.25%, C:0.05-0.07%, Mo:0.17-0.21%, Cu:0.74-0.78%, W:0.065-0.085%, Si:0.44-0.46%, Mn:0.13-0.17%, Ti:0.74-0.77%, Se:0.041-0.044%, S:0.012-0.014%, P:0.017-0.019%, all the other are Fe and inevitable impurity, alloy billet through in steel mill and smelting, surplus valve blank is made in hot rolling and cooling, with abrasive cut off machine, blank is cut, on crank press, bar is squeezed after cutting, swaging is shaped, obtain surplus valve forming blank,
(2) forged by the surplus valve forming blank in step (1), blocking temperature is 875-880 DEG C, and final forging temperature is 915-920 DEG C, obtains surplus valve work in-process;
(3) the surplus valve work in-process obtained after forging in step (2) are heat-treated and carried out mechanical workout;
(4) Tempering and Quenching is carried out to the surplus valve work in-process after machined in step (3): adopt double normalizing+tempering, first time normalizing temperature be greater than second time normalizing temperature; First time normalizing: normalizing temperature 855-865 DEG C, is incubated 11-14min after temperature; Second time normalizing: normalizing temperature 805-815 DEG C, is incubated 7-8min after temperature; Tempering: adopt zone heating, first paragraph Heating temperature is 560-570 DEG C, is incubated 15-17min after temperature, and second segment Heating temperature is 690-700 DEG C, is incubated 16-18min after temperature;
(5) to the surplus valve work in-process cool to room temperature through Tempering and Quenching in step (4), cooling adopts water-cooled to be combined with air cooling, first with the speed of cooling of 7-9 DEG C/s by surplus valve work in-process water-cooled to 580-590 DEG C, then air cooling is to 410-420 DEG C, again with the rate of cooling of 2-4 DEG C/s by surplus valve work in-process water-cooled to 190-200 DEG C, last air cooling to room temperature obtains finished product surplus valve;
(6) the surplus valve finished product obtained is put in storage finally by clean packaging through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
The invention has the beneficial effects as follows:
Containing a large amount of trace elements in the alloy billet that the present invention selects, wherein: silicon, in steelmaking process, add silicon as reductive agent and reductor, the elastic limit of steel can be significantly improved, yield-point and tensile strength, the combinations such as silicon and molybdenum, tungsten, chromium, are improved erosion resistance and oxidation resistant effect; Manganese, in steelmaking process, manganese is good reductor and sweetening agent, makes steel not only have enough toughness, and has higher intensity and hardness, improves the quenching property of steel, improves the hot workability of steel, improves wear resistance; Chromium, in structure iron and tool steel, chromium can significantly improve intensity, hardness and wear resistance, but reduces plasticity and toughness simultaneously, can also improve oxidation-resistance and the erosion resistance of steel; Nickel, nickel can improve the intensity of steel, and keeps good plasticity and toughness, has higher corrosion resistance to soda acid, at high temperature has antirust and temperature capacity; Molybdenum, can make the grain refining of steel, improves hardening capacity and thermostrength, keeps enough intensity and creep resisting ability when high temperature, improves mechanical property; Titanium, titanium is strong reductor in steel, can make the dense internal organization of steel, crystal grain thinning power, and reduce aging sensitivity and cold shortness, improving welding property, avoids intergranular corrosion; Vanadium, vanadium is the excellent reductor of steel, can thinning microstructure crystal grain, improves intensity and toughness, can improve resistant to hydrogen corrosive power at high temperature under high pressure; Boron, the boron adding trace in steel can improve compactness and the hot rolling performance of steel, improves intensity; Present invention process is simple, with low cost, technological process safety and stability, environmental protection, and product strong alkali-acid resistance corrodes, not easily aging, long service life.
Embodiment
embodiment 1
The present embodiment provides a kind of manufacturing process of stack-up type surplus valve, and concrete steps are as follows:
(1) chemical composition of alloy billet and mass percent is selected to be: B:0.41%, Cr:11.06%, Ni:0.43%, N:0.21%, C:0.05%, Mo:0.17%, Cu:0.74%, W:0.065%, Si:0.44%, Mn:0.13%, Ti:0.74%, Se:0.041%, S:0.012%, P:0.017%, all the other are Fe and inevitable impurity, alloy billet through in steel mill and smelting, surplus valve blank is made in hot rolling and cooling, with abrasive cut off machine, blank is cut, on crank press, bar is squeezed after cutting, swaging is shaped, obtain surplus valve forming blank,
(2) forged by the surplus valve forming blank in step (1), blocking temperature is 875 DEG C, and final forging temperature is 915 DEG C, obtains surplus valve work in-process;
(3) the surplus valve work in-process obtained after forging in step (2) are heat-treated and carried out mechanical workout;
(4) Tempering and Quenching is carried out to the surplus valve work in-process after machined in step (3): adopt double normalizing+tempering, first time normalizing temperature be greater than second time normalizing temperature; First time normalizing: normalizing temperature 855 DEG C, is incubated 14min after temperature; Second time normalizing: normalizing temperature 805 DEG C, is incubated 8min after temperature; Tempering: adopt zone heating, first paragraph Heating temperature is 560 DEG C, is incubated 17min after temperature, and second segment Heating temperature is 690 DEG C, is incubated 18min after temperature;
(5) to the surplus valve work in-process cool to room temperature through Tempering and Quenching in step (4), cooling adopts water-cooled to be combined with air cooling, first with the speed of cooling of 7 DEG C/s by surplus valve work in-process water-cooled to 580 DEG C, then air cooling to 410 DEG C, again with the rate of cooling of 2 DEG C/s by surplus valve work in-process water-cooled to 190 DEG C, last air cooling to room temperature obtains finished product surplus valve;
(6) the surplus valve finished product obtained is put in storage finally by clean packaging through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
embodiment 2
The present embodiment provides a kind of manufacturing process of stack-up type surplus valve, and concrete steps are as follows:
(1) chemical composition of alloy billet and mass percent is selected to be: B:0.44%, Cr:11.08%, Ni:0.45%, N:0.25%, C:0.07%, Mo:0.21%, Cu:0.78%, W:0.085%, Si:0.46%, Mn:0.17%, Ti:0.77%, Se:0.044%, S:0.014%, P:0.019%, all the other are Fe and inevitable impurity, alloy billet through in steel mill and smelting, surplus valve blank is made in hot rolling and cooling, with abrasive cut off machine, blank is cut, on crank press, bar is squeezed after cutting, swaging is shaped, obtain surplus valve forming blank,
(2) forged by the surplus valve forming blank in step (1), blocking temperature is 880 DEG C, and final forging temperature is 920 DEG C, obtains surplus valve work in-process;
(3) the surplus valve work in-process obtained after forging in step (2) are heat-treated and carried out mechanical workout;
(4) Tempering and Quenching is carried out to the surplus valve work in-process after machined in step (3): adopt double normalizing+tempering, first time normalizing temperature be greater than second time normalizing temperature; First time normalizing: normalizing temperature 865 DEG C, is incubated 11min after temperature; Second time normalizing: normalizing temperature 815 DEG C, is incubated 7min after temperature; Tempering: adopt zone heating, first paragraph Heating temperature is 570 DEG C, is incubated 15min after temperature, and second segment Heating temperature is 700 DEG C, is incubated 16min after temperature;
(5) to the surplus valve work in-process cool to room temperature through Tempering and Quenching in step (4), cooling adopts water-cooled to be combined with air cooling, first with the speed of cooling of 9 DEG C/s by surplus valve work in-process water-cooled to 590 DEG C, then air cooling to 420 DEG C, again with the rate of cooling of 4 DEG C/s by surplus valve work in-process water-cooled to 200 DEG C, last air cooling to room temperature obtains finished product surplus valve;
(6) the surplus valve finished product obtained is put in storage finally by clean packaging through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
embodiment 3
The present embodiment provides a kind of manufacturing process of stack-up type surplus valve, and concrete steps are as follows:
(1) chemical composition of alloy billet and mass percent is selected to be: B:0.42%, Cr:11.07%, Ni:0.44%, N:0.23%, C:0.06%, Mo:0.19%, Cu:0.76%, W:0.075%, Si:0.45%, Mn:0.15%, Ti:0.76%, Se:0.042%, S:0.013%, P:0.018%, all the other are Fe and inevitable impurity, alloy billet through in steel mill and smelting, surplus valve blank is made in hot rolling and cooling, with abrasive cut off machine, blank is cut, on crank press, bar is squeezed after cutting, swaging is shaped, obtain surplus valve forming blank,
(2) forged by the surplus valve forming blank in step (1), blocking temperature is 878 DEG C, and final forging temperature is 917 DEG C, obtains surplus valve work in-process;
(3) the surplus valve work in-process obtained after forging in step (2) are heat-treated and carried out mechanical workout;
(4) Tempering and Quenching is carried out to the surplus valve work in-process after machined in step (3): adopt double normalizing+tempering, first time normalizing temperature be greater than second time normalizing temperature; First time normalizing: normalizing temperature 860 DEG C, is incubated 12min after temperature; Second time normalizing: normalizing temperature 810 DEG C, is incubated 8min after temperature; Tempering: adopt zone heating, first paragraph Heating temperature is 565 DEG C, is incubated 16min after temperature, and second segment Heating temperature is 695 DEG C, is incubated 17min after temperature;
(5) to the surplus valve work in-process cool to room temperature through Tempering and Quenching in step (4), cooling adopts water-cooled to be combined with air cooling, first with the speed of cooling of 8 DEG C/s by surplus valve work in-process water-cooled to 585 DEG C, then air cooling to 415 DEG C, again with the rate of cooling of 3 DEG C/s by surplus valve work in-process water-cooled to 196 DEG C, last air cooling to room temperature obtains finished product surplus valve;
(6) the surplus valve finished product obtained is put in storage finally by clean packaging through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (4)
1. a manufacturing process for stack-up type surplus valve, is characterized in that, concrete steps are as follows:
(1) chemical composition of alloy billet and mass percent is selected to be: B:0.41-0.44%, Cr:11.06-11.08%, Ni:0.43-0.45%, N:0.21-0.25%, C:0.05-0.07%, Mo:0.17-0.21%, Cu:0.74-0.78%, W:0.065-0.085%, Si:0.44-0.46%, Mn:0.13-0.17%, Ti:0.74-0.77%, Se:0.041-0.044%, S:0.012-0.014%, P:0.017-0.019%, all the other are Fe and inevitable impurity, alloy billet through in steel mill and smelting, surplus valve blank is made in hot rolling and cooling, with abrasive cut off machine, blank is cut, on crank press, bar is squeezed after cutting, swaging is shaped, obtain surplus valve forming blank,
(2) forged by the surplus valve forming blank in step (1), blocking temperature is 875-880 DEG C, and final forging temperature is 915-920 DEG C, obtains surplus valve work in-process;
(3) the surplus valve work in-process obtained after forging in step (2) are heat-treated and carried out mechanical workout;
(4) Tempering and Quenching is carried out to the surplus valve work in-process after machined in step (3): adopt double normalizing+tempering, first time normalizing temperature be greater than second time normalizing temperature; First time normalizing: normalizing temperature 855-865 DEG C, is incubated 11-14min after temperature; Second time normalizing: normalizing temperature 805-815 DEG C, is incubated 7-8min after temperature; Tempering: adopt zone heating, first paragraph Heating temperature is 560-570 DEG C, is incubated 15-17min after temperature, and second segment Heating temperature is 690-700 DEG C, is incubated 16-18min after temperature;
(5) to the surplus valve work in-process cool to room temperature through Tempering and Quenching in step (4), cooling adopts water-cooled to be combined with air cooling, first with the speed of cooling of 7-9 DEG C/s by surplus valve work in-process water-cooled to 580-590 DEG C, then air cooling is to 410-420 DEG C, again with the rate of cooling of 2-4 DEG C/s by surplus valve work in-process water-cooled to 190-200 DEG C, last air cooling to room temperature obtains finished product surplus valve;
(6) the surplus valve finished product obtained is put in storage finally by clean packaging through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
2. the manufacturing process of stack-up type surplus valve according to claim 1, it is characterized in that, concrete steps are as follows:
(1) chemical composition of alloy billet and mass percent is selected to be: B:0.41%, Cr:11.06%, Ni:0.43%, N:0.21%, C:0.05%, Mo:0.17%, Cu:0.74%, W:0.065%, Si:0.44%, Mn:0.13%, Ti:0.74%, Se:0.041%, S:0.012%, P:0.017%, all the other are Fe and inevitable impurity, alloy billet through in steel mill and smelting, surplus valve blank is made in hot rolling and cooling, with abrasive cut off machine, blank is cut, on crank press, bar is squeezed after cutting, swaging is shaped, obtain surplus valve forming blank,
(2) forged by the surplus valve forming blank in step (1), blocking temperature is 875 DEG C, and final forging temperature is 915 DEG C, obtains surplus valve work in-process;
(3) the surplus valve work in-process obtained after forging in step (2) are heat-treated and carried out mechanical workout;
(4) Tempering and Quenching is carried out to the surplus valve work in-process after machined in step (3): adopt double normalizing+tempering, first time normalizing temperature be greater than second time normalizing temperature; First time normalizing: normalizing temperature 855 DEG C, is incubated 14min after temperature; Second time normalizing: normalizing temperature 805 DEG C, is incubated 8min after temperature; Tempering: adopt zone heating, first paragraph Heating temperature is 560 DEG C, is incubated 17min after temperature, and second segment Heating temperature is 690 DEG C, is incubated 18min after temperature;
(5) to the surplus valve work in-process cool to room temperature through Tempering and Quenching in step (4), cooling adopts water-cooled to be combined with air cooling, first with the speed of cooling of 7 DEG C/s by surplus valve work in-process water-cooled to 580 DEG C, then air cooling to 410 DEG C, again with the rate of cooling of 2 DEG C/s by surplus valve work in-process water-cooled to 190 DEG C, last air cooling to room temperature obtains finished product surplus valve;
(6) the surplus valve finished product obtained is put in storage finally by clean packaging through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
3. the manufacturing process of stack-up type surplus valve according to claim 1, it is characterized in that, concrete steps are as follows:
(1) chemical composition of alloy billet and mass percent is selected to be: B:0.44%, Cr:11.08%, Ni:0.45%, N:0.25%, C:0.07%, Mo:0.21%, Cu:0.78%, W:0.085%, Si:0.46%, Mn:0.17%, Ti:0.77%, Se:0.044%, S:0.014%, P:0.019%, all the other are Fe and inevitable impurity, alloy billet through in steel mill and smelting, surplus valve blank is made in hot rolling and cooling, with abrasive cut off machine, blank is cut, on crank press, bar is squeezed after cutting, swaging is shaped, obtain surplus valve forming blank,
(2) forged by the surplus valve forming blank in step (1), blocking temperature is 880 DEG C, and final forging temperature is 920 DEG C, obtains surplus valve work in-process;
(3) the surplus valve work in-process obtained after forging in step (2) are heat-treated and carried out mechanical workout;
(4) Tempering and Quenching is carried out to the surplus valve work in-process after machined in step (3): adopt double normalizing+tempering, first time normalizing temperature be greater than second time normalizing temperature; First time normalizing: normalizing temperature 865 DEG C, is incubated 11min after temperature; Second time normalizing: normalizing temperature 815 DEG C, is incubated 7min after temperature; Tempering: adopt zone heating, first paragraph Heating temperature is 570 DEG C, is incubated 15min after temperature, and second segment Heating temperature is 700 DEG C, is incubated 16min after temperature;
(5) to the surplus valve work in-process cool to room temperature through Tempering and Quenching in step (4), cooling adopts water-cooled to be combined with air cooling, first with the speed of cooling of 9 DEG C/s by surplus valve work in-process water-cooled to 590 DEG C, then air cooling to 420 DEG C, again with the rate of cooling of 4 DEG C/s by surplus valve work in-process water-cooled to 200 DEG C, last air cooling to room temperature obtains finished product surplus valve;
(6) the surplus valve finished product obtained is put in storage finally by clean packaging through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
4. the manufacturing process of stack-up type surplus valve according to claim 1, it is characterized in that, concrete steps are as follows:
(1) chemical composition of alloy billet and mass percent is selected to be: B:0.42%, Cr:11.07%, Ni:0.44%, N:0.23%, C:0.06%, Mo:0.19%, Cu:0.76%, W:0.075%, Si:0.45%, Mn:0.15%, Ti:0.76%, Se:0.042%, S:0.013%, P:0.018%, all the other are Fe and inevitable impurity, alloy billet through in steel mill and smelting, surplus valve blank is made in hot rolling and cooling, with abrasive cut off machine, blank is cut, on crank press, bar is squeezed after cutting, swaging is shaped, obtain surplus valve forming blank,
(2) forged by the surplus valve forming blank in step (1), blocking temperature is 878 DEG C, and final forging temperature is 917 DEG C, obtains surplus valve work in-process;
(3) the surplus valve work in-process obtained after forging in step (2) are heat-treated and carried out mechanical workout;
(4) Tempering and Quenching is carried out to the surplus valve work in-process after machined in step (3): adopt double normalizing+tempering, first time normalizing temperature be greater than second time normalizing temperature; First time normalizing: normalizing temperature 860 DEG C, is incubated 12min after temperature; Second time normalizing: normalizing temperature 810 DEG C, is incubated 8min after temperature; Tempering: adopt zone heating, first paragraph Heating temperature is 565 DEG C, is incubated 16min after temperature, and second segment Heating temperature is 695 DEG C, is incubated 17min after temperature;
(5) to the surplus valve work in-process cool to room temperature through Tempering and Quenching in step (4), cooling adopts water-cooled to be combined with air cooling, first with the speed of cooling of 8 DEG C/s by surplus valve work in-process water-cooled to 585 DEG C, then air cooling to 415 DEG C, again with the rate of cooling of 3 DEG C/s by surplus valve work in-process water-cooled to 196 DEG C, last air cooling to room temperature obtains finished product surplus valve;
(6) the surplus valve finished product obtained is put in storage finally by clean packaging through follow-up physical and chemical inspection and UT (Ultrasonic Testing).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190007.9A CN104846298A (en) | 2015-04-21 | 2015-04-21 | Manufacturing technology of layered overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190007.9A CN104846298A (en) | 2015-04-21 | 2015-04-21 | Manufacturing technology of layered overflow valve |
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| CN104846298A true CN104846298A (en) | 2015-08-19 |
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| CN201510190007.9A Pending CN104846298A (en) | 2015-04-21 | 2015-04-21 | Manufacturing technology of layered overflow valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826108A (en) * | 2016-12-26 | 2017-06-13 | 常熟市惠机电有限公司 | A kind of preparation method of high temp.-resistant valve connector |
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| CN103031500B (en) * | 2012-12-21 | 2014-12-10 | 无锡市华尔泰机械制造有限公司 | Large-diameter flange and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1316540A (en) * | 2000-03-30 | 2001-10-10 | 住友金属工业株式会社 | Heat-resisting steel |
| CN1714161A (en) * | 2002-11-19 | 2005-12-28 | 工业钢克鲁梭公司 | Method for making an abrasion resistant steel plate and plate obtained |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826108A (en) * | 2016-12-26 | 2017-06-13 | 常熟市惠机电有限公司 | A kind of preparation method of high temp.-resistant valve connector |
| WO2018119629A1 (en) * | 2016-12-26 | 2018-07-05 | 常熟市惠一机电有限公司 | Manufacturing method for high temperature-resistant valve connector |
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