CN108998719A - A kind of processing technology of high-strength fireproof check valve - Google Patents
A kind of processing technology of high-strength fireproof check valve Download PDFInfo
- Publication number
- CN108998719A CN108998719A CN201810974589.3A CN201810974589A CN108998719A CN 108998719 A CN108998719 A CN 108998719A CN 201810974589 A CN201810974589 A CN 201810974589A CN 108998719 A CN108998719 A CN 108998719A
- Authority
- CN
- China
- Prior art keywords
- valve body
- check valve
- parts
- ingredient
- carburizing
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/58—Oils
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a kind of processing technologys of high-strength fireproof check valve, belong to valve arrangement technical field.The processing technology of the high-strength fireproof check valve, comprising the following steps: (1) ingredient；(2) melting raw material；(3) alloy solution of previous step is carried out being cooled into alloy；(4) alloy of previous step is carried out to secondary smelting in smelting furnace and forms alloy solution；(5) it casts；(6) carburization process；(7) it quenches；(8) it is tempered；(9) valve body is subjected to sanding and polishing；(10) fireproof coating is coated on the surface of valve body；(11) valve body for having coated fireproof coating is packed into spool, high-strength fireproof check valve is made.The processing technology of high-strength fireproof check valve of the invention improves the mechanical strength and fire resistance of high-strength fireproof check valve by heat treatment process and coating fireproof coating.In the case of fire, high-strength fireproof check valve of the invention can prevent liquid or gas leakage in pipeline from causing damages and polluting.
Description
Technical field
The present invention relates to a kind of processing technologys of high-strength fireproof check valve, belong to valve arrangement technical field.
Background technique
Check valve is that fluid can only be flowed along water inlet, and water outlet medium can not but flow back, and be commonly called as check valve.Check valve is again
Claim check-valves or non-return valve.It is empty for preventing oil stream reverse flow in hydraulic system, or for preventing from compressing in pneumatic system
Gas reverse flow.Check valve has through type and two kinds of right-angle type.Straight check valve, which is threadedly coupled, to be installed on the pipeline.Right angle
Formula check valve has threaded connection, board-like connection and three kinds of forms of flanged joint.Hydraulic control one-way valve is also referred to as locking-valve or pressure retaining valve, it
It is identical as check valve, to prevent oil liquid reverse flow.But again using control when needing oil stream reverse flow in hydraulic circuit
Liquefaction pressure opens check valve, keeps oil stream all flowable in both direction.Hydraulic control one-way valve uses taper valve core, therefore leakproofness
It can be good.When requiring closing oil path, this valve can be used to play pressure maintaining effect as the one-way locking of oil circuit.Hydraulic control one-way valve control oil
Leakage way have and internal drainage type and leak two kinds of formula.Internal drainage type can be used in the oil circuit that oil stream reversely exports no back pressure；Otherwise it needs
With the formula of leaking, to reduce control-oil pressure.
Current check valve does not have fire resistance substantially, in the case of fire, often result in liquid in pipeline or
Gas leakage causes damages and pollutes.And there is also the problems such as easy to damage, perishable, intensity is low for current check valve.
Summary of the invention
The technical problem to be solved by the present invention is to, in view of the shortcomings of the prior art, propose a kind of intensity is high, long service life simultaneously
And the processing technology of the good high-strength fireproof check valve of fire resistance.
The technical solution that the present invention proposes to solve above-mentioned technical problem is: a kind of processing work of high-strength fireproof check valve
Skill, comprising the following steps:
(1) ingredient: the mass percent of each ingredient in the valve body of high-strength fireproof check valve are as follows: C:0.01-0.03%, Al:
3.55-3.75%, Zn:2.31-3.32%, Mn:1.15-1.37%, Cr:0.03-0.07%, Ni:0.33-0.45%, Pd:0.13-
0.18%, Nd:0.03-0.09%, Ce:0.05-0.08%, Eu:0.02-0.05%, Lu:0.21-0.26%, Ga:0.01-0.02%,
Sn:0.66-0.83%, Zr:0.02-0.05%, Re:0.01-0.03%, surplus Fe；
(2) it melting raw material: is added raw materials into smelting furnace by the mass percent of the scheduled each ingredient of valve body, by the temperature in smelting furnace
It is increased to all raw materials all to melt, raw material is smelted to form alloy solution；
(3) alloy solution obtained in the previous step is cooled down, uses water cooling with the cooling rate of 21-25 DEG C/s by alloy solution
Water cooling is to 300-350 DEG C of formation alloy；
(4) previous step alloy after cooling is subjected in smelting furnace secondary smelting, the temperature in smelting furnace is increased to alloy whole
1.5-2h is kept the temperature after fusing, alloy forms alloy solution by secondary smelting；
(5) it casts: carrying out secondary smelting formation alloy solution to cast obtained valve body；
(6) carburization process, the specific steps are as follows:
A. a carburizing, valve body is placed in heating furnace, and heating furnace is raised to 1000-1050 DEG C from room temperature with carburizing, carburizing time 1
~1.5h；
B. air-cooled, use the air-cooled cooling rate with 13-15 DEG C/s that valve body acceleration is cooled to room the workpiece after carburizing
Temperature；
C. two carburizings, valve body is placed in heating furnace, and heating furnace is raised to 850-900 DEG C from room temperature with carburizing, carburizing time 3.5
~4h, and the carbon potential CP in the strong infiltration stage in carburizing is 1.12-1.15C%, the carbon potential CP of diffusion phase is 0.75-0.85C%；
D. water cooling uses water cooling to be cooled to room temperature the valve body after secondary carburizing with the cooling rate of 20-25 DEG C/s；
(7) it quenches
A. it quenches, the valve body after secondary Carburization Treatment is put into well formula gas heating furnace, Quench heating is carried out to valve body
Processing, quenching and preserving heat temperature are 6580 DEG C ± 20 DEG C, and soaking time is 1.5~2h；
B. it is immersed in quenching oil after the completion of valve body Quench heating, keeping quenching oil temperature is 60-70 DEG C, 0.5~1.5h of time；
C. it is cleaned after the valve body after being quenched being cooled to room temperature；
Wherein in quenching oil each ingredient mass percent ingredient are as follows: fatty acid monoglyceride: 1.12-1.26%, octylphenol polyethylene
Ethylene oxide ether: 0.29-0.34%, terpene resin: 0.45-0.66%, chlorinated paraffin: 1.52-1.78%, dicyclopentadiene:
0.43-0.56%, olein: 0.45-0.75%, dialkyl diphenylamine: 0.29-0.53%, triethanolamine: 0.11-
0.23%, polyoxylethylene abietate: 0.46-0.61%, anilinomethyl triethoxysilane: 0.23-0.37%, benzoic acid
Sodium: 0.09-0.16%, potassium molybdate: 0.21-0.36%, surplus are 60SN base oil；
(8) it is tempered: valve body being heated to 650-670 DEG C of 0.5~1.5h of tempering, uses water cooling by valve body with 18-22 DEG C/s's afterwards
Cooling rate is cooled to room temperature；
(9) valve body is subjected to sanding and polishing；
(10) fireproof coating for being 500-650 μm in the surface coating thickness of valve body；The raw material components of fireproof coating are by weight
It include: 30-35 parts of oxychloride magnesium, 20-26 parts of aluminium oxide, 14-16 parts of expanded perlite, 11-14 parts of expanded vermiculite, epoxy resin
4-7 parts, 8-11 parts of triethanolamine, 15-25 parts of water；
(11) valve body for having coated fireproof coating is packed into spool, high-strength fireproof check valve is made.
The improvement of above-mentioned technical proposal is: the mass percent of each ingredient in the valve body of high-strength fireproof check valve are as follows: C:
0.01%, Al:3.55%, Zn:2.31%, Mn:1.15%, Cr:0.03%, Ni:0.33%, Pd:0.13%, Nd:0.03%, Ce:
0.05%, Eu:0.02%, Lu:0.21%, Ga:0.01%, Sn:0.66%, Zr:0.02%, Re:0.01%, surplus Fe.
The improvement of above-mentioned technical proposal is: the mass percent of each ingredient in the valve body of high-strength fireproof check valve are as follows: C:
0.03%, Al:3.75%, Zn:3.32%, Mn:1.37%, Cr:0.07%, Ni:0.45%, Pd:0.18%, Nd:0.09%, Ce:
0.08%, Eu:0.05%, Lu:0.26%, Ga:0.02%, Sn:0.83%, Zr:0.05%, Re:0.03%, surplus Fe.
The improvement of above-mentioned technical proposal is: the mass percent ingredient of each ingredient in the quenching oil in step (7) are as follows: glycerol
Mono fatty acid ester: 1.18%, octyl phenol polyoxyethylene ether: 0.32%, terpene resin: 0.46%, chlorinated paraffin: 1.58%, it is double
Cyclopentadiene: 0.51%, olein: 0.47%, dialkyl diphenylamine: 0.34%, triethanolamine: 0.18%, rosin
Sour polyoxyethylene ester: 0.61%, anilinomethyl triethoxysilane: 0.27%, sodium benzoate: 0.09%, potassium molybdate:
0.22%, surplus is 60SN base oil.
The improvement of above-mentioned technical proposal is: the raw material components of fireproof coating include: oxychloride by weight in step (10)
35 parts of magnesium, 26 parts of aluminium oxide, 15 parts of expanded perlite, 14 parts of expanded vermiculite, 6 parts of epoxy resin, 9 parts of triethanolamine, 25 parts of water.
The beneficial effect of the present invention by adopting the above technical scheme is:
(1) it joined rare earth element in the raw material of valve body in the processing technology of high-strength fireproof check valve of the invention, improve
The intensity and corrosion resistance of valve body；
(2) in the processing technology of high-strength fireproof check valve of the invention, raw material has been subjected to secondary smelting before valve body casting,
Reduce the impurity in raw material, improves the intensity of valve body, and defect rate reduces 28%；
(3) processing technology of high-strength fireproof check valve of the invention passes through the combination processing of carburizing, quenching and tempering, mentions significantly
The high intensity of valve body, so that tensile strength reaches 800/MPa or more, elongation after fracture reaches 27.30%, and end face shrinking percentage reaches
To 29%, yield point elongation rate elongation percentage reaches 46.3J, and elongation at yield point reaches 980/MPa；
(4) in the processing technology of high-strength fireproof check valve of the invention, the quenching oil that quenching technical uses, viscosity is low, gloss
Good, the easily calm oily bottom of the impurity such as oxide skin that quenching process generates is convenient to clean, so that quenching oil is recycled for a long time, and
Quenching oil is not easy to adsorb steam, and dissolved oxygen rate is low, mould proof growth, oil product stable components, and volatility is very low under high temperature, improves
The cyclic utilization rate of quenching oil, and its radiating rate is 4-7 times of conventional quenching oil, make it possible to it is successional for quenching,
To improve the quality of quenching, to improve the thermal effectiveness of valve body；
(5) vermiculite in the fireproof coating in the processing technology of high-strength fireproof check valve of the invention is a kind of iron content, magnesium
Aluminosilicate quasi-mineral, has layer structure, and interlayer has the crystallization water, density 80-200kg/m3, thermal conductivity 0.17-
0.25W/(mK), fire resistance is strong, and sound absorption, sound insulation property are good, non-toxic and tasteless, so that high-strength fireproof check valve is also provided with
Fire resistance is strong, good, the non-toxic and tasteless feature of sound absorption, sound insulation property；
(6) middle expanded perlite is a kind of glass in the fireproof coating in the processing technology of high-strength fireproof check valve of the invention
The quality of matter rock, expanded perlite is extremely light, bulk density 80-250kg/m3, thermal conductivity is 0.042-0.076W/ (mK), tool
Have heat preservation, the characteristics such as heat-insulated, non-ignitable, nontoxic, chemical stability is good so that high-strength fireproof check valve be also provided with heat preservation, every
Hot, non-ignitable, nontoxic characteristic, and the chemical stability of expanded perlite is good, extends the service life of fireproof coating.
Specific embodiment
Embodiment one
The processing technology of the high-strength fireproof check valve of the present embodiment, comprising the following steps:
(1) ingredient: the mass percent of each ingredient in the valve body of high-strength fireproof check valve are as follows: C:0.01%, Al:3.55%, Zn:
2.31%, Mn:1.15%, Cr:0.03%, Ni:0.33%, Pd:0.13%, Nd:0.03%, Ce:0.05%, Eu:0.02%, Lu:
0.21%, Ga:0.01%, Sn:0.66%, Zr:0.02%, Re:0.01%, surplus Fe；
(2) it melting raw material: is added raw materials into smelting furnace by the mass percent of the scheduled each ingredient of valve body, by the temperature in smelting furnace
It is increased to all raw materials all to melt, raw material is smelted to form alloy solution；
(3) alloy solution obtained in the previous step is cooled down, uses water cooling with the cooling rate of 21-25 DEG C/s by alloy solution
Water cooling is to 300-350 DEG C of formation alloy；
(4) previous step alloy after cooling is subjected in smelting furnace secondary smelting, the temperature in smelting furnace is increased to alloy whole
1.5-2h is kept the temperature after fusing, alloy forms alloy solution by secondary smelting；
(5) it casts: carrying out secondary smelting formation alloy solution to cast obtained valve body；
(6) carburization process, the specific steps are as follows:
A. a carburizing, valve body is placed in heating furnace, and heating furnace is raised to 1000-1050 DEG C from room temperature with carburizing, carburizing time 1
~1.5h；
B. air-cooled, use the air-cooled cooling rate with 13-15 DEG C/s that valve body acceleration is cooled to room the workpiece after carburizing
Temperature；
C. two carburizings, valve body is placed in heating furnace, and heating furnace is raised to 850-900 DEG C from room temperature with carburizing, carburizing time 3.5
~4h, and the carbon potential CP in the strong infiltration stage in carburizing is 1.12-1.15C%, the carbon potential CP of diffusion phase is 0.75-0.85C%；
D. water cooling uses water cooling to be cooled to room temperature the valve body after secondary carburizing with the cooling rate of 20-25 DEG C/s；
(7) it quenches
A. it quenches, the valve body after secondary Carburization Treatment is put into well formula gas heating furnace, Quench heating is carried out to valve body
Processing, quenching and preserving heat temperature are 6580 DEG C ± 20 DEG C, and soaking time is 1.5~2h；
B. it is immersed in quenching oil after the completion of valve body Quench heating, keeping quenching oil temperature is 60-70 DEG C, 0.5~1.5h of time；
C. it is cleaned after the valve body after being quenched being cooled to room temperature；
Wherein in quenching oil each ingredient mass percent ingredient are as follows: fatty acid monoglyceride: 1.18%, octylphenol polyethylene ethylene oxide
Ether: 0.32%, terpene resin: 0.46%, chlorinated paraffin: 1.58%, dicyclopentadiene: 0.51%, olein:
0.47%, dialkyl diphenylamine: 0.34%, triethanolamine: 0.18%, polyoxylethylene abietate: 0.61%, anilinomethyl three
Ethoxysilane: 0.27%, sodium benzoate: 0.09%, potassium molybdate: 0.22%, surplus is 60SN base oil；
(8) it is tempered: valve body being heated to 650-670 DEG C of 0.5~1.5h of tempering, uses water cooling by valve body with 18-22 DEG C/s's afterwards
Cooling rate is cooled to room temperature；
(9) valve body is subjected to sanding and polishing；
(10) fireproof coating for being 500-650 μm in the surface coating thickness of valve body；The raw material components of fireproof coating are by weight
It include: 35 parts of oxychloride magnesium, 26 parts of aluminium oxide, 15 parts of expanded perlite, 14 parts of expanded vermiculite, 6 parts of epoxy resin, triethanolamine
9 parts, 25 parts of water；
(11) valve body for having coated fireproof coating is packed into spool, high-strength fireproof check valve is made.
Embodiment two
The processing technology of the high-strength fireproof check valve of the present embodiment, comprising the following steps:
(1) ingredient: the mass percent of each ingredient in the valve body of high-strength fireproof check valve are as follows: C:0.03%, Al:3.75%, Zn:
3.32%, Mn:1.37%, Cr:0.07%, Ni:0.45%, Pd:0.18%, Nd:0.09%, Ce:0.08%, Eu:0.05%, Lu:
0.26%, Ga:0.02%, Sn:0.83%, Zr:0.05%, Re:0.03%, surplus Fe；
(2) it melting raw material: is added raw materials into smelting furnace by the mass percent of the scheduled each ingredient of valve body, by the temperature in smelting furnace
It is increased to all raw materials all to melt, raw material is smelted to form alloy solution；
(3) alloy solution obtained in the previous step is cooled down, uses water cooling with the cooling rate of 25 DEG C/s by alloy solution water
It is cooled to 350 DEG C of formation alloys；
(4) previous step alloy after cooling is subjected in smelting furnace secondary smelting, the temperature in smelting furnace is increased to alloy whole
1.5h is kept the temperature after fusing, alloy forms alloy solution by secondary smelting；
(5) it casts: carrying out secondary smelting formation alloy solution to cast obtained valve body；
(6) carburization process, the specific steps are as follows:
A. a carburizing, valve body is placed in heating furnace, and heating furnace is raised to 1000 DEG C from room temperature with carburizing, carburizing time 1.5h；
B. air-cooled, use the air-cooled cooling rate with 13 DEG C/s to be cooled to room temperature valve body acceleration the workpiece after a carburizing；
C. two carburizings, valve body is placed in heating furnace, and heating furnace is raised to 900 DEG C from room temperature with carburizing, carburizing time 3.5, and
The carbon potential CP in the strong infiltration stage in carburizing is 1.12-1.15C%, and the carbon potential CP of diffusion phase is 0.75-0.85C%；
D. water cooling uses water cooling to be cooled to room temperature the valve body after secondary carburizing with the cooling rate of 20 DEG C/s；
(7) it quenches
A. it quenches, the valve body after secondary Carburization Treatment is put into well formula gas heating furnace, Quench heating is carried out to valve body
Processing, quenching and preserving heat temperature are 6580 DEG C ± 20 DEG C, soaking time 1.5h；
B. it is immersed in quenching oil after the completion of valve body Quench heating, keeping quenching oil temperature is 70 DEG C, time 0.5h；
C. it is cleaned after the valve body after being quenched being cooled to room temperature；
Wherein in quenching oil each ingredient mass percent ingredient are as follows: fatty acid monoglyceride: 1.18%, octylphenol polyethylene ethylene oxide
Ether: 0.32%, terpene resin: 0.46%, chlorinated paraffin: 1.58%, dicyclopentadiene: 0.51%, olein:
0.47%, dialkyl diphenylamine: 0.34%, triethanolamine: 0.18%, polyoxylethylene abietate: 0.61%, anilinomethyl three
Ethoxysilane: 0.27%, sodium benzoate: 0.09%, potassium molybdate: 0.22%, surplus is 60SN base oil；
(8) it is tempered: valve body is heated to 650 DEG C of tempering 1.5h, use water cooling that valve body is cooling with the cooling rate of 22 DEG C/s afterwards
To room temperature；
(9) valve body is subjected to sanding and polishing；
(10) fireproof coating for being 500-650 μm in the surface coating thickness of valve body；The raw material components of fireproof coating are by weight
It include: 35 parts of oxychloride magnesium, 26 parts of aluminium oxide, 15 parts of expanded perlite, 14 parts of expanded vermiculite, 6 parts of epoxy resin, triethanolamine
9 parts, 25 parts of water；
(11) valve body for having coated fireproof coating is packed into spool, high-strength fireproof check valve is made.
The present invention is not limited to the above embodiment.All technical solutions formed using equivalent replacement, are all fallen within the present invention and wanted
The protection scope asked.
Claims (5)
1. a kind of processing technology of high-strength fireproof check valve, it is characterised in that: the following steps are included:
(1) ingredient: the mass percent of each ingredient in the valve body of the high-strength fireproof check valve are as follows: C:0.01-0.03%, Al:
3.55-3.75%, Zn:2.31-3.32%, Mn:1.15-1.37%, Cr:0.03-0.07%, Ni:0.33-0.45%, Pd:0.13-
0.18%, Nd:0.03-0.09%, Ce:0.05-0.08%, Eu:0.02-0.05%, Lu:0.21-0.26%, Ga:0.01-0.02%,
Sn:0.66-0.83%, Zr:0.02-0.05%, Re:0.01-0.03%, surplus Fe；
(2) it melting raw material: is added raw materials into smelting furnace by the mass percent of the scheduled each ingredient of valve body, by the temperature in smelting furnace
It is increased to all raw materials all to melt, raw material is smelted to form alloy solution；
(3) alloy solution obtained in the previous step is cooled down, uses water cooling with the cooling rate of 21-25 DEG C/s by alloy solution
Water cooling is to 300-350 DEG C of formation alloy；
(4) previous step alloy after cooling is subjected in smelting furnace secondary smelting, the temperature in smelting furnace is increased to alloy whole
1.5-2h is kept the temperature after fusing, alloy forms alloy solution by secondary smelting；
(5) it casts: carrying out secondary smelting formation alloy solution to cast obtained valve body；
(6) carburization process, the specific steps are as follows:
A. a carburizing, valve body is placed in heating furnace, and heating furnace is raised to 1000-1050 DEG C from room temperature with carburizing, carburizing time 1
~1.5h；
B. air-cooled, use the air-cooled cooling rate with 13-15 DEG C/s that valve body acceleration is cooled to room the workpiece after carburizing
Temperature；
C. two carburizings, valve body is placed in heating furnace, and heating furnace is raised to 850-900 DEG C from room temperature with carburizing, carburizing time 3.5
~4h, and the carbon potential CP in the strong infiltration stage in carburizing is 1.12-1.15C%, the carbon potential CP of diffusion phase is 0.75-0.85C%；
D. water cooling uses water cooling to be cooled to room temperature the valve body after secondary carburizing with the cooling rate of 20-25 DEG C/s；
(7) it quenches
A. it quenches, the valve body after secondary Carburization Treatment is put into well formula gas heating furnace, Quench heating is carried out to valve body
Processing, quenching and preserving heat temperature are 6580 DEG C ± 20 DEG C, and soaking time is 1.5~2h；
B. it is immersed in quenching oil after the completion of valve body Quench heating, keeping quenching oil temperature is 60-70 DEG C, 0.5~1.5h of time；
C. it is cleaned after the valve body after being quenched being cooled to room temperature；
Wherein in quenching oil each ingredient mass percent ingredient are as follows: fatty acid monoglyceride: 1.12-1.26%, octylphenol polyethylene
Ethylene oxide ether: 0.29-0.34%, terpene resin: 0.45-0.66%, chlorinated paraffin: 1.52-1.78%, dicyclopentadiene:
0.43-0.56%, olein: 0.45-0.75%, dialkyl diphenylamine: 0.29-0.53%, triethanolamine: 0.11-
0.23%, polyoxylethylene abietate: 0.46-0.61%, anilinomethyl triethoxysilane: 0.23-0.37%, benzoic acid
Sodium: 0.09-0.16%, potassium molybdate: 0.21-0.36%, surplus are 60SN base oil；
(8) it is tempered: valve body being heated to 650-670 DEG C of 0.5~1.5h of tempering, uses water cooling by valve body with 18-22 DEG C/s's afterwards
Cooling rate is cooled to room temperature；
(9) valve body is subjected to sanding and polishing；
(10) fireproof coating for being 500-650 μm in the surface coating thickness of the valve body；The raw material components of the fireproof coating
Include: by weight 30-35 parts of oxychloride magnesium, 20-26 parts of aluminium oxide, 14-16 parts of expanded perlite, 11-14 parts of expanded vermiculite,
4-7 parts of epoxy resin, 8-11 parts of triethanolamine, 15-25 parts of water；
(11) valve body for having coated fireproof coating is packed into spool, high-strength fireproof check valve is made.
2. the processing technology of high-strength fireproof check valve according to claim 1, it is characterised in that: the high-strength fireproof
The mass percent of each ingredient in the valve body of check valve are as follows: C:0.01%, Al:3.55%, Zn:2.31%, Mn:1.15%, Cr:
0.03%, Ni:0.33%, Pd:0.13%, Nd:0.03%, Ce:0.05%, Eu:0.02%, Lu:0.21%, Ga:0.01%, Sn:
0.66%, Zr:0.02%, Re:0.01%, surplus Fe.
3. the processing technology of high-strength fireproof check valve according to claim 1, it is characterised in that: the high-strength fireproof
The mass percent of each ingredient in the valve body of check valve are as follows: C:0.03%, Al:3.75%, Zn:3.32%, Mn:1.37%, Cr:
0.07%, Ni:0.45%, Pd:0.18%, Nd:0.09%, Ce:0.08%, Eu:0.05%, Lu:0.26%, Ga:0.02%, Sn:
0.83%, Zr:0.05%, Re:0.03%, surplus Fe.
4. the processing technology of high-strength fireproof check valve according to claim 1, it is characterised in that: quenching in step (7)
The mass percent ingredient of each ingredient in kerosene are as follows: fatty acid monoglyceride: 1.18%, octyl phenol polyoxyethylene ether: 0.32%,
Terpene resin: 0.46%, chlorinated paraffin: 1.58%, dicyclopentadiene: 0.51%, olein: 0.47%, dialkyl group
Diphenylamines: 0.34%, triethanolamine: 0.18%, polyoxylethylene abietate: 0.61%, anilinomethyl triethoxysilane:
0.27%, sodium benzoate: 0.09%, potassium molybdate: 0.22%, surplus is 60SN base oil.
5. the processing technology of high-strength fireproof check valve according to claim 1, it is characterised in that: described in step (10)
The raw material components of fireproof coating include: 35 parts of oxychloride magnesium, 26 parts of aluminium oxide, 15 parts of expanded perlite, expansion leech by weight
14 parts of stone, 6 parts of epoxy resin, 9 parts of triethanolamine, 25 parts of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974589.3A CN108998719A (en) | 2018-08-24 | 2018-08-24 | A kind of processing technology of high-strength fireproof check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974589.3A CN108998719A (en) | 2018-08-24 | 2018-08-24 | A kind of processing technology of high-strength fireproof check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108998719A true CN108998719A (en) | 2018-12-14 |
Family
ID=64594423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810974589.3A Pending CN108998719A (en) | 2018-08-24 | 2018-08-24 | A kind of processing technology of high-strength fireproof check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108998719A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700682A (en) * | 2020-09-09 | 2022-07-05 | 北京盛维华科技有限公司 | Hydraulic multi-way valve casting process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002285037A (en) * | 2001-03-23 | 2002-10-03 | Mitsubishi Shoji Construction Materials Corp | Coating composition |
| RU2521999C1 (en) * | 2012-11-30 | 2014-07-10 | Общество с ограниченной ответственностью "Огнезащитные технологии и материалы" | Fire-retardant composition |
| CN104926267A (en) * | 2015-06-12 | 2015-09-23 | 遵义市恒新化工有限公司 | Novel fireproof coating and processing technology thereof |
| CN107245690A (en) * | 2017-06-23 | 2017-10-13 | 江苏丰东热处理及表面改性工程技术研究有限公司 | A kind of carburizing quenching process |
| CN107794456A (en) * | 2017-11-15 | 2018-03-13 | 朱建海 | A kind of processing technology of valve high intensity flange |
| CN107841600A (en) * | 2017-11-14 | 2018-03-27 | 曹安飞 | One kind is used for outdoor antirust valve processing technology |
-
2018
- 2018-08-24 CN CN201810974589.3A patent/CN108998719A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002285037A (en) * | 2001-03-23 | 2002-10-03 | Mitsubishi Shoji Construction Materials Corp | Coating composition |
| RU2521999C1 (en) * | 2012-11-30 | 2014-07-10 | Общество с ограниченной ответственностью "Огнезащитные технологии и материалы" | Fire-retardant composition |
| CN104926267A (en) * | 2015-06-12 | 2015-09-23 | 遵义市恒新化工有限公司 | Novel fireproof coating and processing technology thereof |
| CN107245690A (en) * | 2017-06-23 | 2017-10-13 | 江苏丰东热处理及表面改性工程技术研究有限公司 | A kind of carburizing quenching process |
| CN107841600A (en) * | 2017-11-14 | 2018-03-27 | 曹安飞 | One kind is used for outdoor antirust valve processing technology |
| CN107794456A (en) * | 2017-11-15 | 2018-03-13 | 朱建海 | A kind of processing technology of valve high intensity flange |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700682A (en) * | 2020-09-09 | 2022-07-05 | 北京盛维华科技有限公司 | Hydraulic multi-way valve casting process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101543916B1 (en) | Steels for low temperature services having superior deformed surface quality and method for production thereof | |
| CN104313484A (en) | Steel for high-strength anti-shaking anti-corrosion reinforcing steel bar and thermal treatment process of steel | |
| WO2020135437A1 (en) | Steel resistant to seawater corrosion and manufacturing method therefor | |
| CN108998719A (en) | A kind of processing technology of high-strength fireproof check valve | |
| CN105506358A (en) | Preparation process of environment-protecting and corrosion-resisting brass material for sea farming | |
| JP5640777B2 (en) | Cr-containing steel pipe for line pipes with excellent intergranular stress corrosion cracking resistance in weld heat affected zone | |
| CN107904487B (en) | A kind of polynary chrome molybdenum carbon dioxide corrosion resistant oil well pipe and its manufacturing method | |
| CN104177097B (en) | A kind of corrosion-resisting wear-proof continuous annealing line special graphite carbon cover roller and manufacturing process thereof | |
| JP4940970B2 (en) | Manufacturing method for thick 13Cr stainless steel pipe | |
| CN107893198A (en) | Air bleeding valve and its casting technique in a kind of pipe-line system | |
| EP3156168A1 (en) | Submerged arc welding wire and welding method | |
| CN106756497A (en) | A kind of handling process of corrosion-resistant low temperature resistant oil cleaner screen | |
| JPH0499128A (en) | Production of martensitic stainless steel line pipe | |
| CN106636959A (en) | High-strength anticorrosion steel for gas valve and heat treatment process of high-strength anticorrosion steel | |
| JP3966136B2 (en) | Stainless steel pipe for line pipe with excellent corrosion resistance | |
| CN103147006B (en) | A kind of anticorrosive seamless gathering-line pipe and manufacture method thereof | |
| CN107654722A (en) | A kind of processing technology of valve Combined handle | |
| JP2005105357A (en) | High-strength stainless steel pipe superior in corrosion resistance for oil well | |
| CN101575501A (en) | Refrigerant agent | |
| CN107747037A (en) | A kind of steel alloy nitrogencase hardening method | |
| CN107916350A (en) | A kind of alloy valve and its heat treatment process | |
| CN108330393B (en) | Wind power steel and preparation method thereof | |
| CN110157985B (en) | Steel plate for chord web arm of crawler crane and thermal hardening and tempering process performed on steel plate | |
| CN113913588B (en) | Heat treatment method of steel plate for low-carbon equivalent anti-seismic container | |
| CN108998743A (en) | A kind of five valve group preparation process of anticorrosive wear-resistant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |