CN104032238B - A kind of preparation method of anticorrosion shock-resistant valve - Google Patents
A kind of preparation method of anticorrosion shock-resistant valve Download PDFInfo
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- CN104032238B CN104032238B CN201410211017.1A CN201410211017A CN104032238B CN 104032238 B CN104032238 B CN 104032238B CN 201410211017 A CN201410211017 A CN 201410211017A CN 104032238 B CN104032238 B CN 104032238B
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Abstract
The present invention relates to valve manufacture field, particularly relate to a kind of preparation method of anticorrosion shock-resistant valve.The invention discloses a kind of preparation method of anticorrosion shock-resistant valve, be prepared by the step such as melting, just refining, refining, repeatedly refining, cast, knockout, cleaning, thermal treatment of raw material, thus improve shock-resistance and the non-corrosibility of valve.
Description
Technical field
The present invention relates to valve manufacture field, particularly relate to a kind of preparation method of anticorrosion shock-resistant valve.
Background technology
At present, valve is often applied to the industrial circles such as oil, chemical industry, metallurgy, and the material that the preparation of valve is used is often metallic substance, while needing to improve impact resistance, when being applied in the strong corrosive medias such as acid, alkali, salt, its resistance to corrosion also needs to improve.
Summary of the invention
For the deficiency that prior art exists, object of the present invention just there are provided a kind of preparation method of anticorrosion shock-resistant valve, improves shock-resistance and the non-corrosibility of valve.
To achieve these goals, the technical solution used in the present invention is such:
A preparation method for anticorrosion shock-resistant valve, comprises the following steps:
(1) raw material: prepare the described raw material for the manufacture of valve, described raw material contains C, Si, P, S, Ni, Cr, Mo, Nb, Mn and N, and described each component content is C0.08%, Si2.00%, P0.04%, S0.03%, Ni10.00 ~ 14.00%, Cr17.00 ~ 21.00%, Mo2.50 ~ 3.50%, Nb0.80%, Mn2.00% and N0.10%;
(2) raw material melting: it is aluminium alloy that the raw material for the manufacture of valve is put into melting equipment melting, controls temperature at 1400-1600 DEG C, and keeps 1h;
(3) just refine: use slag former to carry out slag making, and by furnace bottom nozzle, bottom blown gas is blown in melting equipment; Stir aluminium alloy;
(4) refining: the aluminium alloy refined at the beginning of completing is transferred to vacuum or is full of in the container of rare gas element and carries out deoxidation, degassed and desulfurization, reductor is added on the liquid level of the aluminium alloy of just refining, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors capture oxygen copper reduction out, resultant floating slagging venting, and the mass parts being obtained inclusion by spectrum analyzer and density tester;
(5) refining repeatedly: repeating step (4), until the mass parts of the inclusion contained in aluminium alloy is without obviously reducing or having reached minimum;
(6) valve cast: aluminium alloy is warming up to 1550-1650 DEG C, calmness of coming out of the stove; After calm 10-15min, aluminium alloy is cast in mould, forms valve part;
(7) knockout: when the valve part by the time in step (6) is cooled to 400 ~ 500 DEG C, first makes valve part be separated with sandbox, then make it be separated with molding sand;
(8) clear up: remove from the valve part after step (7) water, rising head, remove remaining core sand, remove the scab on valve part surface, burr, oxide skin;
(9) thermal treatment: the valve part of step (8) is put into electric furnace, according to not being warming up to 850-950 DEG C higher than the speed of 72 DEG C/h, insulation 4-5h, stove is chilled to room temperature; Again according to not being warming up to 720-780 DEG C higher than 88 DEG C/h, come out of the stove, at the quenching-in water of 55-70 DEG C to 270-350 DEG C after insulation 3.5-4h; Return in electric furnace and be warming up to 350-400 DEG C, carry out low-temperaturetempering process, after insulation 5h, air cooling of coming out of the stove;
(10) anneal: valve part is heated to 880-920 DEG C, insulation 4-5h, then be cooled to 620-660 DEG C with the speed of 50-60 DEG C/h, air cooling of coming out of the stove;
(11) valve interior surface process: degreasing is carried out to the valve interior surface after annealing air cooling and dries, clean draining, use lubricating fluid to soak, form lubrication dry film;
(12) dry for standby: the container that the valve part handled well puts into 60-70 DEG C is dried, and is incubated 1-1.5h.
As a kind of preferred version, the slag former in described step (3) is low-carbon (LC) submerged arc slag former or converter low-carbon (LC) slag former; Bottom blown gas is Ar, N
2, CO
2or CH
4.
As a kind of preferred version, described anticorrosion shock-resistant valve inner and outer wall is equipped with plastic layer, and the preparation of this plastic layer comprises the following steps:
(1) proportioning raw materials: described plastic layer comprises described impact resistant polystyrene material and is made up of polystyrene, styrene-butadiene rubber(SBR), sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D, the mass parts between described each component is polystyrene 84 ~ 84.5 parts, 15 ~ 15.5 parts, styrene-butadiene rubber(SBR), sulphur 0.4 ~ 0.5 part, 0.5 ~ 0.6 part, zinc oxide, stearic acid 0.5 ~ 0.6 part, rubber accelerator DM0.2 ~ 0.3 part and promotor vulkacit D D0.2 ~ 0.3 part;
(2) p-poly-phenyl ethene, styrene-butadiene rubber(SBR), sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D carry out weighing;
(3) polystyrene is filled with in dissolver;
(4) dissolver is put in styrene-butadiene rubber(SBR) grinding, dissolver is heated to 50 DEG C;
(5) in the mixing tank of styrene-butadiene rubber(SBR) solution injection tube road, and add sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D, in the interchanger that mixed solution enters 70 DEG C, carry out preheating;
(6) in pre-polymerizer, nitrogen blanket is filled with;
(7) when material starts to enter pre-polymerizer, the mixing speed of agitator is 30 ~ 36r/min, and pre-polymerizer is heated 80 DEG C, and keeps temperature 80 ~ 90 DEG C, regularly observes prepolymerization situation by vision slit;
(8) flowed in polymerization tower by the material in step (7), control temperature at 100 ~ 200 DEG C, then is sent into devolatilizer and is removed compression molding after volatilizable component.
As a kind of preferred version, also need to carry out bonding with valve part and assemble after described plastic layer completes, the concrete grammar of bonding assembling is:
(1) according to from inside outwards, from bottom to top, valve part and plastic layer are bondd by binding agent;
(2) again all parts of valve is assembled;
(3) pressure and gas-tightness test are carried out to the valve assembled;
(4) if valve meets pressure and resistance to air loss requires, carry out painting, packing; If do not meet pressure and resistance to air loss requirement, then do over again.
Compared with prior art, beneficial effect of the present invention:
1. the stress concentration decreased in plastics makes plastic layer corrosion-resistant, thus the valve of the plastic layer that makes to have bondd is more corrosion-resistant;
2. have more toughness, add the life-span of valve.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
Embodiment 1:
A preparation method for anticorrosion shock-resistant valve, comprises the following steps:
(1) raw material: prepare the described raw material for the manufacture of valve, described raw material contains C, Si, P, S, Ni, Cr, Mo, Nb, Mn and N, and described each component content is C0.08%, Si2.00%, P0.04%, S0.03%, Ni10.00 ~ 14.00%, Cr17.00 ~ 21.00%, Mo2.50 ~ 3.50%, Nb0.80%, Mn2.00% and N0.10%;
(2) raw material melting: it is aluminium alloy that the raw material for the manufacture of valve is put into melting equipment melting, controls temperature at 1400-1600 DEG C, and keeps 1h;
(3) just refine: use slag former to carry out slag making, and by furnace bottom nozzle, bottom blown gas is blown in melting equipment; Stir aluminium alloy;
(4) refining: the aluminium alloy refined at the beginning of completing is transferred to vacuum or is full of in the container of rare gas element and carries out deoxidation, degassed and desulfurization, reductor is added on the liquid level of the aluminium alloy of just refining, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors capture oxygen copper reduction out, resultant floating slagging venting, and the mass parts being obtained inclusion by spectrum analyzer and density tester;
(5) refining repeatedly: repeating step (4), until the mass parts of the inclusion contained in aluminium alloy is without obviously reducing or having reached minimum;
(6) valve cast: aluminium alloy is warming up to 1550-1650 DEG C, calmness of coming out of the stove; After calm 10-15min, aluminium alloy is cast in mould, forms valve part;
(7) knockout: when the valve part by the time in step (6) is cooled to 400 ~ 500 DEG C, first makes valve part be separated with sandbox, then make it be separated with molding sand;
(8) clear up: remove from the valve part after step (7) water, rising head, remove remaining core sand, remove the scab on valve part surface, burr, oxide skin;
(9) thermal treatment: the valve part of step (8) is put into electric furnace, according to not being warming up to 850-950 DEG C higher than the speed of 72 DEG C/h, insulation 4-5h, stove is chilled to room temperature; Again according to not being warming up to 720-780 DEG C higher than 88 DEG C/h, come out of the stove, at the quenching-in water of 55-70 DEG C to 270-350 DEG C after insulation 3.5-4h; Return in electric furnace and be warming up to 350-400 DEG C, carry out low-temperaturetempering process, after insulation 5h, air cooling of coming out of the stove;
(10) anneal: valve part is heated to 880-920 DEG C, insulation 4-5h, then be cooled to 620-660 DEG C with the speed of 50-60 DEG C/h, air cooling of coming out of the stove;
(11) valve interior surface process: degreasing is carried out to the valve interior surface after annealing air cooling and dries, clean draining, use lubricating fluid to soak, form lubrication dry film;
(12) dry for standby: the container that the valve part handled well puts into 60-70 DEG C is dried, and is incubated 1-1.5h.
Slag former in described step (3) is low-carbon (LC) submerged arc slag former or converter low-carbon (LC) slag former; Bottom blown gas is Ar, N
2, CO
2or CH
4.
Embodiment 2:
A kind of anticorrosion shock-resistant valve inner and outer wall is equipped with plastic layer, and the preparation of this plastic layer comprises the following steps:
(1) proportioning raw materials: described plastic layer comprises described impact resistant polystyrene material and is made up of polystyrene, styrene-butadiene rubber(SBR), sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D, the mass parts between described each component is polystyrene 84 ~ 84.5 parts, 15 ~ 15.5 parts, styrene-butadiene rubber(SBR), sulphur 0.4 ~ 0.5 part, 0.5 ~ 0.6 part, zinc oxide, stearic acid 0.5 ~ 0.6 part, rubber accelerator DM0.2 ~ 0.3 part and promotor vulkacit D D0.2 ~ 0.3 part;
(2) p-poly-phenyl ethene, styrene-butadiene rubber(SBR), sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D carry out weighing;
(3) polystyrene is filled with in dissolver;
(4) dissolver is put in styrene-butadiene rubber(SBR) grinding, dissolver is heated to 50 DEG C;
(5) in the mixing tank of styrene-butadiene rubber(SBR) solution injection tube road, and add sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D, in the interchanger that mixed solution enters 70 DEG C, carry out preheating;
(6) in pre-polymerizer, nitrogen blanket is filled with;
(7) when material starts to enter pre-polymerizer, the mixing speed of agitator is 30 ~ 36r/min, and pre-polymerizer is heated 80 DEG C, and keeps temperature 80 ~ 90 DEG C, regularly observes prepolymerization situation by vision slit;
(8) flowed in polymerization tower by the material in step (7), control temperature at 100 ~ 200 DEG C, then is sent into devolatilizer and is removed compression molding after volatilizable component.
Also need to carry out bonding with valve part after described plastic layer completes to assemble, the concrete grammar of bonding assembling is:
(1) according to from inside outwards, from bottom to top, valve part and plastic layer are bondd by binding agent;
(2) again all parts of valve is assembled;
(3) pressure and gas-tightness test are carried out to the valve assembled;
(4) if valve meets pressure and resistance to air loss requires, carry out painting, packing; If do not meet pressure and resistance to air loss requirement, then do over again.
Carried out testing by finished product and put into the acidic solution 1 hour that pH value is 4.5, observe surface-brightening by sight, do SaltSprayTest 60 hours, surface is corrosion-free.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and non-limiting technical scheme, those of ordinary skill in the art is to be understood that, those are modified to technical scheme of the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.
Claims (4)
1. a preparation method for anticorrosion shock-resistant valve, is characterized in that, comprise the following steps:
(1) raw material: prepare the raw material for the manufacture of valve, described raw material contains C, Si, P, S, Ni, Cr, Mo, Nb, Mn and N, and described each component content is C0.08%, Si2.00%, P0.04%, S0.03%, Ni10.00 ~ 14.00%, Cr17.00 ~ 21.00%, Mo2.50 ~ 3.50%, Nb0.80%, Mn2.00% and N0.10%;
(2) raw material melting: it is aluminium alloy that the raw material for the manufacture of valve is put into melting equipment melting, controls temperature at 1400-1600 DEG C, and keeps 1h;
(3) just refine: use slag former to carry out slag making, and by furnace bottom nozzle, bottom blown gas is blown in melting equipment; Stir aluminium alloy;
(4) refining: the aluminium alloy refined at the beginning of completing is transferred to vacuum or is full of in the container of rare gas element and carries out deoxidation, degassed and desulfurization, reductor is added on the liquid level of the aluminium alloy of just refining, make to carry out deoxidation on interface, reductor is charcoal or carbide of calcium or boronation magnesium or boron slag, these reductors capture oxygen copper reduction out, resultant floating slagging venting, and the mass parts being obtained inclusion by spectrum analyzer and density tester;
(5) refining repeatedly: repeating step (4), until the mass parts of the inclusion contained in aluminium alloy is without obviously reducing or having reached minimum;
(6) valve cast: aluminium alloy is warming up to 1550-1650 DEG C, calmness of coming out of the stove; After calm 10-15min, aluminium alloy is cast in mould, forms valve part;
(7) knockout: when the valve part by the time in step (6) is cooled to 400 ~ 500 DEG C, first makes valve part be separated with sandbox, then make it be separated with molding sand;
(8) clear up: remove from the valve part after step (7) water, rising head, remove remaining core sand, remove the scab on valve part surface, burr, oxide skin;
(9) thermal treatment: the valve part of step (8) is put into electric furnace, according to not being warming up to 850-950 DEG C higher than the speed of 72 DEG C/h, insulation 4-5h, stove is chilled to room temperature; Again according to not being warming up to 720-780 DEG C higher than 88 DEG C/h, come out of the stove, at the quenching-in water of 55-70 DEG C to 270-350 DEG C after insulation 3.5-4h; Return in electric furnace and be warming up to 350-400 DEG C, carry out low-temperaturetempering process, after insulation 5h, air cooling of coming out of the stove;
(10) anneal: valve part is heated to 880-920 DEG C, insulation 4-5h, then be cooled to 620-660 DEG C with the speed of 50-60 DEG C/h, air cooling of coming out of the stove;
(11) valve interior surface process: degreasing is carried out to the valve interior surface after annealing air cooling and dries, clean draining, use lubricating fluid to soak, form lubrication dry film;
(12) dry for standby: the container that the valve part handled well puts into 60-70 DEG C is dried, and is incubated 1-1.5h.
2. the preparation method of a kind of anticorrosion shock-resistant valve according to claim 1, is characterized in that: the slag former in described step (3) is low-carbon (LC) submerged arc slag former or converter low-carbon (LC) slag former; Bottom blown gas is Ar, N
2, CO
2or CH
4.
3. the preparation method of a kind of anticorrosion shock-resistant valve according to claim 1, is characterized in that: described anticorrosion shock-resistant valve inner and outer wall is equipped with plastic layer, and the preparation of this plastic layer comprises the following steps:
(1) proportioning raw materials: described plastic layer comprises impact resistant polystyrene material, described impact resistant polystyrene material is made up of polystyrene, styrene-butadiene rubber(SBR), sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D, and the mass parts between described each component is polystyrene 84 ~ 84.5 parts, 15 ~ 15.5 parts, styrene-butadiene rubber(SBR), sulphur 0.4 ~ 0.5 part, 0.5 ~ 0.6 part, zinc oxide, stearic acid 0.5 ~ 0.6 part, rubber accelerator DM0.2 ~ 0.3 part and promotor vulkacit D D0.2 ~ 0.3 part;
(2) p-poly-phenyl ethene, styrene-butadiene rubber(SBR), sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D carry out weighing;
(3) polystyrene is filled with in dissolver;
(4) dissolver is put in styrene-butadiene rubber(SBR) grinding, dissolver is heated to 50 DEG C;
(5) in the mixing tank of styrene-butadiene rubber(SBR) solution injection tube road, and add sulphur, zinc oxide, stearic acid, rubber accelerator DM and promotor vulkacit D D, in the interchanger that mixed solution enters 70 DEG C, carry out preheating;
(6) in pre-polymerizer, nitrogen blanket is filled with;
(7) when material starts to enter pre-polymerizer, the mixing speed of agitator is 30 ~ 36r/min, and pre-polymerizer is heated 80 DEG C, and keeps temperature 80 ~ 90 DEG C, regularly observes prepolymerization situation by vision slit;
(8) flowed in polymerization tower by the material in step (7), control temperature at 100 ~ 200 DEG C, then is sent into devolatilizer and is removed compression molding after volatilizable component.
4. the preparation method of a kind of anticorrosion shock-resistant valve according to claim 3, is characterized in that: also need to carry out bonding with valve part after described plastic layer completes and assemble, and the concrete grammar of bonding assembling is:
(1) according to from inside outwards, from bottom to top, valve part and plastic layer are bondd by binding agent;
(2) again all parts of valve is assembled;
(3) pressure and gas-tightness test are carried out to the valve assembled;
(4) if valve meets pressure and resistance to air loss requires, carry out painting, packing; If do not meet pressure and resistance to air loss requirement, then do over again.
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| CN201410211017.1A CN104032238B (en) | 2014-05-19 | 2014-05-19 | A kind of preparation method of anticorrosion shock-resistant valve |
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|---|---|---|---|
| CN201410211017.1A CN104032238B (en) | 2014-05-19 | 2014-05-19 | A kind of preparation method of anticorrosion shock-resistant valve |
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| CN104032238B true CN104032238B (en) | 2016-02-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440372A (en) * | 2015-12-10 | 2016-03-30 | 青岛海特新蓝生物科技有限公司 | Engine air intake air throttle prepared from flame retardant rubber |
| CN106636929A (en) * | 2016-12-14 | 2017-05-10 | 苏州纽东精密制造科技有限公司 | Corrosion resistant metal valve |
| CN107876707A (en) * | 2017-11-14 | 2018-04-06 | 郑媛媛 | A kind of casting technique of anticorrosion pipeline valve |
| CN116005064A (en) * | 2023-02-09 | 2023-04-25 | 陕西特装科技有限公司 | Graphene reinforced valve and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126768A (en) * | 1993-12-22 | 1996-07-17 | 富士乌兹克斯株式会社 | Internal combustion valve having an iron based hard-facing alloy contact surface |
| CN102994907A (en) * | 2012-09-29 | 2013-03-27 | 铜陵国方水暖科技有限责任公司 | Casting method of check valve body |
| CN103667986A (en) * | 2013-11-08 | 2014-03-26 | 张超 | Anti-aging alloy steel material for valves and preparation method thereof |
-
2014
- 2014-05-19 CN CN201410211017.1A patent/CN104032238B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126768A (en) * | 1993-12-22 | 1996-07-17 | 富士乌兹克斯株式会社 | Internal combustion valve having an iron based hard-facing alloy contact surface |
| CN102994907A (en) * | 2012-09-29 | 2013-03-27 | 铜陵国方水暖科技有限责任公司 | Casting method of check valve body |
| CN103667986A (en) * | 2013-11-08 | 2014-03-26 | 张超 | Anti-aging alloy steel material for valves and preparation method thereof |
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