CN104032220B - A kind of high-pressure hydro operating mode flange - Google Patents
A kind of high-pressure hydro operating mode flange Download PDFInfo
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- CN104032220B CN104032220B CN201410194004.8A CN201410194004A CN104032220B CN 104032220 B CN104032220 B CN 104032220B CN 201410194004 A CN201410194004 A CN 201410194004A CN 104032220 B CN104032220 B CN 104032220B
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Abstract
The invention discloses a kind of high-pressure hydro operating mode flange, the mass percent of flange composition: Ni:11～11.8%, Li:12～12.5%, Si:1.65～1.7%, Al:0.15～0.2%, C:0.26～0.28%, Mn:0.15～0.2%, Na:0.05～0.08%, K:0.22～0.28%, P:0.003～0.005%, Cu:0.7～0.9%, Mg:0.55～0.6%, compound rare-earth: 3.25～3.28%, all the other are Fe; The Technology for Heating Processing of this flange: step (1): raw material is sent into forge furnace and forge; Step (2): the flange blank having forged is heat-treated; Step (3): flange stretches and impact test; Step (4): carry out 100% ultrasound examination; Step (5): carry out 100% magnetic particle testing.
Description
Technical field
The present invention relates to a kind of high-pressure hydro operating mode flange, specifically a kind of high-pressure hydro operating mode flange.
Background technology
At present, High-pressure Hydrogenation Unit is emphasis and the focus of oil refining, is to utilize hydrogen addition technology to improve quality and benefits. On deviceThe various hydrogen parts that face, due to complex-shaped, great majority are all steel-castings. Working characteristics is for facing hydrogen, high temperature, high pressure, and followsThe operation of hydrogen sulfide. Face in hydrogen environment hydrogen to corrosion of metal, atomic hydrogen and molecule Hydrogen Energy partly with steel in micro-crack or bubbleCarbon on wall or carbide reaction generate methane and are gathered in the methane hole (formation of crack) in microgap. On common stainless cast steel partThere are more micro-crack, pore, slag inclusion, non-metallic inclusion. Can not ensure anti-hydrogen performance, in High-pressure Hydrogenation Unit systemFlange one and leakage easily cause spontaneous combustion blast serious accident, cause the loss of personnel and equipment, face so be badly in need of seeking a kind of high pressureHydrogen operating mode flange.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming of above prior art, to propose a kind of high-pressure hydro operating mode usageOrchid, has improved product quality, and the anti-hydrogen performance of equipment that increased Strong increases service life of flange, meets and faces hydrogen, high temperature, high pressureThe requirement of safe and reliable use under special operation condition, avoids production development accident.
In order to solve the problems of the technologies described above, technical scheme of the present invention is achieved in the following ways: a kind of high-pressure hydro operating modeWith flange, the mass percent of flange composition: Ni:11～11.8%, Li:12～12.5%, Si:1.65～1.7％、Al：0.15～0.2％、C：0.26～0.28％、Mn：0.15～0.2％，Na：0.05～0.08％，K：0.22～0.28%, P:0.003～0.005%, Cu:0.7～0.9%, Mg:0.55～0.6%, compound rare-earth: 3.25～3.28%, itsRemaining is Fe and inevitable impurity; In compound rare-earth, comprise by weight percentage following component: La:25～28%, Dy:18.5～18.8%, Pm:12.3～12.5%, Gd:1.2～1.5%, Sm:22～25%, Nd:8.3～8.5%; All the other beCe and inevitably impurity, this high-pressure hydro operating mode is carried out according to the following steps by the Technology for Heating Processing of flange:
Step (1): raw material is sent into forge furnace and forge, the forging manufacturer's standard of flange is not less than III level; Control finish-forgingTemperature and forging ratio, 900 DEG C of final forging temperature >, forging ratio > 3;
Step (2): adopt normalizing to heat-treat in the time that material is carbon steel: the flange blank having forged is heated to 850-910DEG C, insulation 30-45min, then adopts the first refrigerating work procedure to be cooled to 30-40 DEG C; In the time that being austenitic stainless steel, material adoptsSolution treatment: stainless steel is heated to 1100-1200 DEG C, then adopts the second refrigerating work procedure to be cooled to room temperature;
Step (3): the flange of heat treatment heat first stretches and impact test: tension test test item: Rm > 550MPa,Rp0.2> 210MPa, A > 40%; Impact test inspection adopts Charpy pendulu impact method to detect, after stretching and impact test are qualified,Enter next procedure;
Step (4): then the flange of heat treatment heat carries out 100% ultrasound examination according to JB/T4730 standard, it is qualified to detectAfter enter next procedure;
Step (5): carbon steel and low-alloy steel carry out 100% magnetic particle testing according to JB/T4730 standard, and defect detecting test is adoptedBy dry method+continuity method+contact method, detect after qualified and be finished product.
Like this, by technical scheme of the present invention, obtain high-pressure hydro operating mode flange, the anti-hydrogen performance of this flange tool is good, can increaseAdd the service life of flange, meet the requirement of facing safe and reliable use under hydrogen, high temperature, high pressure special operation condition, avoid production developmentAccident, cost-saving, improve productivity effect.
The technical scheme that the present invention further limits is:
Aforesaid high-pressure hydro operating mode flange, the mass percent of flange composition: Ni:11%, Li:12%, Si:1.65％、Al：0.15％、C：0.26％、Mn：0.15％，Na：0.05％，K：0.22％，P：0.003％，Cu：0.7％，Mg:0.55%, compound rare-earth: 3.25%, all the other are Fe and inevitable impurity; In compound rare-earth, bag by weight percentageContaining following component: La:25%, Dy:18.5%, Pm:12.3%, Gd:1.2%, Sm:22%, Nd:8.3%; All the other are CeWith inevitable impurity.
Aforesaid high-pressure hydro operating mode flange, the mass percent of flange composition: Ni:11.5%, Li:12.3%,Si：1.68％、Al：0.18％、C：0.25％、Mn：0.18％，Na：0.06％，K：0.25％，P：0.004％，Cu：0.8%, Mg:0.58%, compound rare-earth: 3.26%, all the other are Fe and inevitable impurity; In compound rare-earth, by weight hundredProportion by subtraction comprises following component: La:26%, Dy:18.6%, Pm:12.4%, Gd:1.3%, Sm:24%, Nd:8.4%; ItsRemaining is Ce and inevitable impurity.
Aforesaid high-pressure hydro operating mode flange, the mass percent of flange composition: Ni:11.8%, Li:12.5%,Si：1.7％、Al：0.2％、C：0.28％、Mn：0.2％，Na：0.08％，K：0.28％，P：0.005％，Cu：0.9％，Mg:0.6%, compound rare-earth: 3.28%, all the other are Fe and inevitable impurity; In compound rare-earth, bag by weight percentageContaining following component: La:28%, Dy:18.8%, Pm:12.5%, Gd:1.5%, Sm:25%, Nd:8.5%; All the other are CeWith inevitable impurity.
The Technology for Heating Processing of flange for aforesaid high-pressure hydro operating mode, Equipment for Heating Processing adopts bell furnace, adopts bell furnace, safetyProperty is good, and temperature is even, and the annealing cycle is short, and cost is low.
The Technology for Heating Processing of flange for aforesaid high-pressure hydro operating mode, in step (5) when material be austenitic stainless steel material according toJB/T4730 standard-required carries out 100% dye-penetrant inspection inspection, like this, convenient and swift, is applicable to any material, and cost is low.
The Technology for Heating Processing of flange for aforesaid high-pressure hydro operating mode, the first refrigerating work procedure: first use the air-cooled speed with 10-15 DEG C/SDegree is cooled to 500-550 DEG C, and then water-cooled is cooled to 30-40 DEG C with the speed of 20-25 DEG C/S, and grain size is more even like this,Mechanical performance is better, and improves its decay resistance and anti-hydrogen performance.
The Technology for Heating Processing of flange for aforesaid high-pressure hydro operating mode, the second refrigerating work procedure: first air cooling is to 800-850 DEG C, at waterThe cold speed with 15-25 DEG C/S is cooled to 450-500 DEG C, and then air-cooled speed with 10-18 DEG C/S is cooled to room temperature, thisSample grain size is thinner, more even, and mechanical performance is better, and improves its decay resistance and anti-hydrogen performance.
The invention has the beneficial effects as follows: high-pressure hydro operating mode flange, the anti-hydrogen performance of this flange tool is good, can increase the use of flangeIn the life-span, meet the requirement of facing safe and reliable use under hydrogen, high temperature, high pressure special operation condition, avoids production development accident, saves intoThis, improve productivity effect.
Of the present invention for the manufacture of containing Ni in the alloy material of flange, wherein nickel plays anti-oxidant and anticorrosive effect, 650～1000Under DEG C high temperature, there are higher intensity and anti-oxidant, resistance to combustion gas corrosion ability, even can at 1000～1100 DEG C of temperature, use for a long time;Wherein cupric, can improve the ability of resistance to various acid corrosion and stress corrosion; Wherein containing aluminium, make alloy have higher resistivity,Lower temperature coefficient of resistivity and good corrosion resistance, the non-oxidizability of raising alloy material, high temperature strength.
The compound rare-earth element adding in alloy material, can play refining, desulfurization, in and the effect of low melting point objectionable impurities,And can improve in processing characteristics, the especially nickel alloy of alloy, can improve to a great extent the physical and chemical performance of alloy,And improve Alloy At Room Temperature and high-temperature mechanical property.
Detailed description of the invention
The present invention is described in further detail below:
Embodiment 1
A kind of high-pressure hydro operating mode flange that the present embodiment provides, the mass percent of flange composition: Ni:11%, Li:12％、Si：1.65％、Al：0.15％、C：0.26％、Mn：0.15％，Na：0.05％，K：0.22％，P：0.003％，Cu:0.7%, Mg:0.55%, compound rare-earth: 3.25%, all the other are Fe and inevitable impurity; In compound rare-earth, by heavyAmount percentage comprises following component: La:25%, Dy:18.5%, Pm:12.3%, Gd:1.2%, Sm:22%, Nd:8.3%;All the other are Ce and inevitable impurity;
This high-pressure hydro operating mode is carried out according to the following steps by the Technology for Heating Processing of flange:
Step (1): raw material is sent into forge furnace and forge, the forging manufacturer's standard of flange is III level; Control final forging temperatureAnd forging ratio, 910 DEG C of final forging temperatures, forging ratio 4;
Step (2): adopt normalizing to heat-treat in the time that material is carbon steel: the flange blank having forged is heated to 850 DEG C,Insulation 30min, then first use the air-cooled speed with 10 DEG C/S to be cooled to 500 DEG C, and then water-cooled is cooling with the speed of 20 DEG C/STo 30 DEG C;
Step (3): the flange of heat treatment heat first stretches and impact test: tension test test item: Rm=555MPa,Rp0.2=215MPa, A=42%; Impact test inspection adopts Charpy pendulu impact method to detect, and after stretching and impact test are qualified, entersEnter next procedure;
Step (4): then the flange of heat treatment heat carries out 100% ultrasound examination according to JB/T4730 standard, it is qualified to detectAfter enter next procedure;
Step (5): carbon steel and low-alloy steel carry out 100% magnetic particle testing according to JB/T4730 standard, and defect detecting test is adoptedBy dry method+continuity method+contact method, detect after qualified and be finished product.
Embodiment 2
A kind of high-pressure hydro operating mode flange that the present embodiment provides, the mass percent of flange composition: Ni:11.5%,Li：12.3％、Si：1.68％、Al：0.18％、C：0.25％、Mn：0.18％，Na：0.06％，K：0.25％，P：0.004%, Cu:0.8%, Mg:0.58%, compound rare-earth: 3.26%, all the other are Fe and inevitable impurity; Compound rare-earthIn, comprise by weight percentage following component: La:26%, Dy:18.6%, Pm:12.4%, Gd:1.3%, Sm:24%,Nd:8.4%; All the other are Ce and inevitable impurity;
This high-pressure hydro operating mode is carried out according to the following steps by the Technology for Heating Processing of flange:
Step (1): raw material is sent into forge furnace and forge, the forging manufacturer's standard of flange is not less than III level; Control finish-forgingTemperature and forging ratio, 920 DEG C of final forging temperatures, forging ratio 5;
Step (2): adopt normalizing to heat-treat in the time that material is carbon steel: the flange blank having forged is heated to 910 DEG C,Insulation 45min, then first use the air-cooled speed with 15 DEG C/S to be cooled to 550 DEG C, and then water-cooled is cooling with the speed of 25 DEG C/STo 40 DEG C;
Step (3): the flange of heat treatment heat first stretches and impact test: tension test test item: Rm=560MPa,Rp0.2=220MPa, A=45%; Impact test inspection adopts Charpy pendulu impact method to detect, and after stretching and impact test are qualified, entersEnter next procedure;
Step (4): then the flange of heat treatment heat carries out 100% ultrasound examination according to JB/T4730 standard, it is qualified to detectAfter enter next procedure;
Step (5): carbon steel and low-alloy steel carry out 100% magnetic particle testing according to JB/T4730 standard, and defect detecting test is adoptedBy dry method+continuity method+contact method, detect after qualified and be finished product.
Embodiment 3
A kind of high-pressure hydro operating mode flange that the present embodiment provides, the mass percent of flange composition: Ni:11.8%,Li：12.5％、Si：1.7％、Al：0.2％、C：0.28％、Mn：0.2％，Na：0.08％，K：0.28％，P：0.005％，Cu:0.9%, Mg:0.6%, compound rare-earth: 3.28%, all the other are Fe and inevitable impurity; In compound rare-earth, by heavyAmount percentage comprises following component: La:28%, Dy:18.8%, Pm:12.5%, Gd:1.5%, Sm:25%, Nd:8.5%;All the other are Ce and inevitable impurity;
This high-pressure hydro operating mode is carried out according to the following steps by the Technology for Heating Processing of flange:
Step (1): raw material is sent into forge furnace and forge, the forging manufacturer's standard of flange is not less than III level; Control finish-forgingTemperature and forging ratio, 960 DEG C of final forging temperatures, forging ratio 6;
Step (2): adopt normalizing to heat-treat in the time that material is carbon steel: the flange blank having forged is heated to 880 DEG C,Insulation 40min, then first use the air-cooled speed with 12 DEG C/S to be cooled to 520 DEG C, and then water-cooled is cooling with the speed of 22 DEG C/STo 32 DEG C;
Step (3): the flange of heat treatment heat first stretches and impact test: tension test test item: Rm=570MPa,Rp0.2=230MPa, A=50%; Impact test inspection adopts Charpy pendulu impact method to detect, and after stretching and impact test are qualified, entersEnter next procedure;
Step (4): then the flange of heat treatment heat carries out 100% ultrasound examination according to JB/T4730 standard, it is qualified to detectAfter enter next procedure;
Step (5): carbon steel and low-alloy steel carry out 100% magnetic particle testing according to JB/T4730 standard, and defect detecting test is adoptedBy dry method+continuity method+contact method, detect after qualified and be finished product.
Following table is the flange performance test results of embodiment 1 to 3:
| Title | (σ b) for tensile strength | Hardness (HB) | Percentage elongation (δ) | (δ s) for yield strength |
| Embodiment 1 | 555MPa | 195 | 42％ | 206MPa |
| Embodiment 2 | 560MPa | 190 | 40％ | 204MPa |
| Embodiment 3 | 570MPa | 185 | 50％ | 200MPa |
Obtain like this high-pressure hydro operating mode flange, the anti-hydrogen performance of this flange tool is good, can increase the service life of flange, meets and facesUnder hydrogen, high temperature, high pressure special operation condition, the requirement of safe and reliable use, avoids production development accident, cost-saving, improves and producesBenefit.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every according to thisThe technological thought that invention proposes, any change of doing on technical scheme basis, within all falling into protection domain of the present invention.
Claims (4)
1. a high-pressure hydro operating mode flange, is characterized in that: the quality percentage of described flange compositionRatio: Ni:11～11.8%, Li:12～12.5%, Si:1.65～1.7%, Al:0.15～0.2%,C：0.26～0.28％、Mn：0.15～0.2％，Na：0.05～0.08％，K：0.22～0.28％，P：0.003～0.005%, Cu:0.7～0.9%, Mg:0.55～0.6%, compound rare-earth: 3.25～3.28%,All the other are Fe and inevitable impurity; In described compound rare-earth, comprise by weight percentage following component:La：25～28％，Dy：18.5～18.8％，Pm：12.3～12.5％，Gd：1.2～1.5％，Sm：22～25%, Nd:8.3～8.5%; All the other are Ce and inevitable impurity.
2. high-pressure hydro operating mode flange according to claim 1, is characterized in that: described flange compositionThe mass percent of composition: Ni:11%, Li:12%, Si:1.65%, Al:0.15%, C:0.26%,Mn:0.15%, Na:0.05%, K:0.22%, P:0.003%, Cu:0.7%, Mg:0.55% is compound rareSoil: 3.25%, all the other are Fe and inevitable impurity; In described compound rare-earth, comprise by weight percentageFollowing component: La:25%, Dy:18.5%, Pm:12.3%, Gd:1.2%, Sm:22%, Nd:8.3%;All the other are Ce and inevitable impurity.
3. high-pressure hydro operating mode flange according to claim 1, is characterized in that: described flange compositionThe mass percent of composition: Ni:11.5%, Li:12.3%, Si:1.68%, Al:0.18%, C:0.25％、Mn：0.18％，Na：0.06％，K：0.25％，P：0.004％，Cu：0.8％，Mg：0.58％，Compound rare-earth: 3.26%, all the other are Fe and inevitable impurity; In described compound rare-earth, percentage by weightThan comprising following component: La:26%, Dy:18.6%, Pm:12.4%, Gd:1.3%, Sm:24%, Nd:8.4%; All the other are Ce and inevitable impurity.
4. high-pressure hydro operating mode flange according to claim 1, is characterized in that: described flange compositionThe mass percent of composition: Ni:11.8%, Li:12.5%, Si:1.7%, Al:0.2%, C:0.28%,Mn:0.2%, Na:0.08%, K:0.28%, P:0.005%, Cu:0.9%, Mg:0.6%, compound rare-earth:3.28%, all the other are Fe and inevitable impurity; In described compound rare-earth, comprise by weight percentage followingComponent: La:28%, Dy:18.8%, Pm:12.5%, Gd:1.5%, Sm:25%, Nd:8.5%; All the otherFor Ce and inevitable impurity.
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| CN201410194004.8A CN104032220B (en) | 2014-05-09 | 2014-05-09 | A kind of high-pressure hydro operating mode flange |
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| CN104032220B true CN104032220B (en) | 2016-05-25 |
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| CN108220543A (en) * | 2017-12-11 | 2018-06-29 | 无锡宏达重工股份有限公司 | A kind of manufacturing process of 14Cr1Mo steel flanges forging |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768604B2 (en) * | 1987-12-04 | 1995-07-26 | 日立金属株式会社 | Fe-based magnetic alloy |
| CN103173691A (en) * | 2013-02-18 | 2013-06-26 | 无锡市派克重型铸锻有限公司 | Ship elevator safety mechanism locking block and manufacturing process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3855047T2 (en) * | 1988-04-04 | 1996-09-12 | Chrysler Motors | INGREDIENTS OF OXIDATION-RESISTANT IRON ALLOYS |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768604B2 (en) * | 1987-12-04 | 1995-07-26 | 日立金属株式会社 | Fe-based magnetic alloy |
| CN103173691A (en) * | 2013-02-18 | 2013-06-26 | 无锡市派克重型铸锻有限公司 | Ship elevator safety mechanism locking block and manufacturing process thereof |
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