CN104878310B - A kind of high-pressure seamless gas storage cylinder and manufacturing process - Google Patents
A kind of high-pressure seamless gas storage cylinder and manufacturing process Download PDFInfo
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Abstract
The invention discloses a kind of high-pressure seamless gas storage cylinder and manufacturing process, using 38CrNi3MoVA as raw material, the composition of 38CrNi3MoVA is by percentage to the quality：Carbon 0.33～0.40, violent 0.27～0.47, silicon 0.17～0.37, chromium 1.20～1.45, nickel 3.00～3.50, molybdenum 0.35～0.45, vanadium 0.10～0.15, copper≤0.20, tungsten≤0.20, sulfur≤0.008, phosphorus≤0.010, remaining are ferrum and impurity.Present invention also offers the manufacturing process of the above-mentioned high-pressure seamless gas storage cylinder of manufacture, by the Technology for Heating Processing using normalizing, quenching and tempering, improves mechanical performance and the resistance to corrosion of gas storage cylinder, while improving the low-temperature flexibility of gas storage cylinder.
Description
Technical field
The invention belongs to steel cylinder manufacturing technology field, and in particular to a kind of high-pressure seamless gas storage cylinder and manufacturing process.
Background technology
Gas storage cylinder can be used for repeated charging air, nitrogen or other gases, mainly be used in surface vessel compression empty
Air-liquid pressure system, salvaging life saving system, bank base air system.The high pressure air bottle of domestic original 24.5MPa level air systems is adopted
Welding structure, manufacturing process are that cylinder adopts roll of steel plate plate weld, and end socket is using punch forming or splice joint, cylinder and end socket
Partly or wholly heat treatment is carried out after welding.As 921A, 980 steel are warship hull steels, its Corrosion Protection preferably, therefore 921A,
980 steel are used to develop 410L/40MPa air bottles.
But due to the gas storage cylinder formed using welding type, the rated operating pressure that can be born is usually no more than 30MPa,
In order to improve the compression capability of gas storage cylinder, gas storage cylinder should use jointless structure, is then no longer desirable for using 921A, 980 steel
The gas storage cylinder of jointless structure.
The Chinese invention patent 10CrNi3MoVA high-pressure seamless steel cylinders of Patent No. 201410707760.6 and its manufacture work
Skill, using 10CrNi3MoVA as raw material, and the end socket by hot spinning manufacture steel cylinder two ends, finally by high temperature quenching, Asia
Temperature quenching and high tempering carry out heat treatment to steel cylinder.Described in specific embodiment, the nothing that gone out using the material and technique productions
Seam steel cylinder, its tensile strength are about 850MPa, and yield strength is about 770MPa, and elongation percentage is about 18%, and fracture toughness is about
450MPa, ballistic work are about 250J.
Although above-mentioned prior art has some raisings in terms of the low-temperature flexibility for improving gas storage cylinder, for use
The gas storage cylinder in high pressure air system on submarine, the above-mentioned gas storage cylinder using 10CrNi3MoVA as raw material, its
Corrosion rate meansigma methodss are in 0.7g/m2H or so, therefore its decay resistance is high not enough；Due to using high temperature quenching, Ya Wen
Quenching and the Technology for Heating Processing of high tempering, although can improve each mechanical property of gas storage cylinder, but the storage for 40Mpa levels
For gas cylinder, its mechanical property is substantially high not enough.
Content of the invention
It is an object of the invention to：A kind of high-pressure seamless gas storage cylinder and manufacturing process are provided, are utilized first
Raw materials of the 38CrNi3MoVA as production gas storage cylinder, produces seamless gas storage cylinder of the anti-pressure ability better than prior art.
To achieve these goals, the technical solution used in the present invention is：
A kind of high-pressure seamless gas storage cylinder, using 38CrNi3MoVA as raw material, the composition of 38CrNi3MoVA is with quality
Percentages are：Carbon 0.33～0.40, violent 0.27～0.47, silicon 0.17～0.37, chromium 1.20～1.45, nickel 3.00～3.50,
Molybdenum 0.35～0.45, vanadium 0.10～0.15, copper≤0.20, tungsten≤0.20, sulfur≤0.008, phosphorus≤0.010, remaining are ferrum and miscellaneous
Matter.
Preferably, the composition of the impurity is：Arsenic≤0.030, stannum≤0.010, lead≤0.010, antimony≤
0.010, bismuth≤0.010, hydrogen≤0.0001, oxygen≤0.0025, nitrogen≤0.0080.
The present invention also provides a kind of manufacturing process of high-pressure seamless gas storage cylinder, comprises the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with quality hundred
Ratio is divided to be calculated as：Carbon 0.33～0.40, violent 0.27～0.47, silicon 0.17～0.37, chromium 1.20～1.45, nickel 3.00～3.50, molybdenum
0.35～0.45, vanadium 0.10～0.15, copper≤0.20, tungsten≤0.20, sulfur≤0.008, phosphorus≤0.010, remaining are ferrum and impurity；
Step 2, the two ends hot-spinning reducing shaping of seamless steel pipe, forms bottle；
Step 3, carries out normalizing, quenching and tempering heat treatment successively to bottle, specifically, bottle is heated to 845～
865 DEG C, temperature retention time is 110～120min, carries out normalized treatment to bottle；Bottle is heated to 745～775 DEG C after normalizing,
Temperature retention time is 110～120min, carries out Quenching Treatment to bottle；Bottle is heated to 640～660 DEG C, during insulation after quenching
Between for 120～160min, temper is carried out to bottle.
Preferably, the composition of the impurity is：Arsenic≤0.030, stannum≤0.010, lead≤0.010, antimony≤0.010, bismuth
≤ 0.010, hydrogen≤0.0001, oxygen≤0.0025, nitrogen≤0.0080.
Preferably, also including step 4, chemical plating is carried out to inner vessel surface, coating adopts NI-P alloys, NI-P to close
The phosphorus content of gold is not less than 30 μm in more than 8%wt, thickness of coating；Bottle outer surface applies ATO ultra pottery anticorrosive materials AM-C.
Preferably, in step one, using 38CrNi3MoVA as raw material, by casting, enclosed is upset, punching base
Seamless steel pipe is made with vertical extrusion molding.
Preferably, in step 3, carrying out normalizing, quenching and tempering heat treatment to bottle, wherein, normalizing temperature is 850
DEG C, temperature retention time is 120min；Hardening heat is 750 DEG C, and temperature retention time is 120min；Temperature is 650 DEG C, temperature retention time
For 140min.
As a result of above-mentioned technical proposal, the invention has the beneficial effects as follows：
(1) gas storage cylinder of the invention under conditions of Design of Chemical Composition is met, is strictly controlled in terms of production raw material
Objectionable impurities elements processed, trace element, the content of gas, using 38CrNi3MoVA as raw material, with prior art in
10CrNi3MoVA is compared as the gas storage cylinder of raw material, with more excellent intensity, toughness, low temperature impact properties, corrosion-resistant
The combination properties such as performance.
(2) gas storage cylinder of the invention by normalizing heat treatment, makes crystal grain refinement and carbide point in terms of processing technology
Cloth homogenization, removes the internal stress of material, then by quenching heat treatment, makes overcooling austenite carry out martensite or bainite turn
Become, obtain martensite or bainite structure, then coordinate tempering heat treatment, with greatly improve the rigid of steel, hardness, wearability,
Fatigue strength and low-temperature flexibility etc., make steel cylinder that there is good obdurability coupling.
(3) on the basis of using 38CrNi3MoVA as raw material, and the Technology for Heating Processing by normalizing, quenching and tempering,
The tensile strength of product can reach 1130～1280Mpa, and yield strength is not less than 980Mpa, and contraction percentage of area Z is not less than 45%,
Elongation after fracture A is not less than 16%, and ballistic work when -20 DEG C is not less than 70J, and ballistic work when -50 DEG C is not less than 65J, clod wash
When flawless, every properties of product are superior to using 10CrNi3MoVA as raw material, and using high temperature quenching, intercritical hardening and
The gas storage cylinder that high tempering is produced.
(4) 38CrNi3MoVA has good resistance to corrosion, further increases coating inside bottle, outside japanning
Process, the corrosion rate meansigma methodss of gas storage cylinder can drop to 0.5～0.6g/m2H, is effectively increased the anticorrosive of gas storage cylinder
Ability, reduces its anticorrosive speed.
Specific embodiment
A kind of high-pressure seamless gas storage cylinder of the present invention, using 38CrNi3MoVA as raw material, 38CrNi3MoVA into
Divide and be by percentage to the quality：Carbon 0.33～0.40, violent 0.27～0.47, silicon 0.17～0.37, chromium 1.20～1.45, nickel 3.00
～3.50, molybdenum 0.35～0.45, vanadium 0.10～0.15, copper≤0.20, tungsten≤0.20, sulfur≤0.008, phosphorus≤0.010, remaining is
Ferrum and impurity.
For improving mechanical property, stress corrosion ability, fracture toughness after gas storage cylinder heat treatment, and reduce seawater corrosion
Speed, carries out special provision to the content of objectionable impurities elements, trace element, gas：Arsenic≤0.030, stannum≤0.010, lead≤
0.010, antimony≤0.010, bismuth≤0.010, hydrogen≤0.0001, oxygen≤0.0025, nitrogen≤0.0080.
The present invention also provides a kind of manufacturing process of high-pressure seamless gas storage cylinder, comprises the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with quality hundred
Ratio is divided to be calculated as：Carbon 0.33～0.40, violent 0.27～0.47, silicon 0.17～0.37, chromium 1.20～1.45, nickel 3.00～3.50, molybdenum
0.35～0.45, vanadium 0.10～0.15, copper≤0.20, tungsten≤0.20, sulfur≤0.008, phosphorus≤0.010, remaining are ferrum and impurity,
The composition of impurity is：Arsenic≤0.030, stannum≤0.010, lead≤0.010, antimony≤0.010, bismuth≤0.010, hydrogen≤0.0001, oxygen
≤ 0.0025, nitrogen≤0.0080；Seamless steel pipe is made by casting, upset enclosed, punching base and vertical extrusion molding.
Step 2, the two ends hot-spinning reducing shaping of seamless steel pipe, forms bottle.
Step 3, carries out normalizing, quenching and tempering heat treatment successively to bottle, specifically, bottle is heated to 845～
865 DEG C, temperature retention time is 110～120min, carries out normalized treatment to bottle；Bottle is heated to 745～775 DEG C after normalizing,
Temperature retention time is 110～120min, carries out Quenching Treatment to bottle；Bottle is heated to 640～660 DEG C, during insulation after quenching
Between for 120～160min, temper is carried out to bottle.Wherein, optimal choice normalizing temperature is 850 DEG C, and temperature retention time is
120min；Hardening heat is 750 DEG C, and temperature retention time is 120min；Temperature is 650 DEG C, and temperature retention time is 140min.
Step 4, carries out chemical plating to inner vessel surface, and coating adopts NI-P alloys, and the phosphorus content of NI-P alloys is 8%
More than wt, thickness of coating are not less than 30 μm；Bottle outer surface applies ATO ultra pottery anticorrosive materials AM-C.
Wherein, 38CrNi3MoVA of the present invention manufactures heavy caliber thick wall seamless steel tube using vertical fashion of extrusion, main production
Operation includes casting, punching base, extrusion molding, heat treatment and machining etc..Steel pipe thermoforming is realized by way of extruding,
It is based on extruding metal theory, by finite element analyses and contracting than engineer testing, completes heavy caliber thick wall seamless steel tube
Extrusion process is developed.Heavy caliber thick wall seamless steel tube is manufactured using extrusion forming process, production efficiency is not only significantly improved, and
The processing to difficult deformable metal can be realized.Base process before extrusion molding includes the enclosed jumping-up of steel ingot and perforation, in steel
Ingot is carried out in enclosed jumping-up and perforation procedure, and metal receives three-dimensional compressive stress, and compression ratio is very big, can effectively crush as cast condition branch
Crystalline substance, crystal grain thinning improve metal structure and performance.
When the spinning closing-in at gas storage cylinder two ends shapes, first by heating one end, then it is fixed on spinning machine, revolves
Pressure closes up, and after the shaping of one end, then the other end is heated, is then fixed on spinning machine, and spinning closing-in ultimately forms bottle
Body.Thick-walled seamless steel pipes are manufactured by the way of extruding there is following outstanding feature：In extrusion process, metal is in three-dimensional pressure
Stress state, extrusion interior solid, combination property are preferable；As extrusion molding speed is fast, temperature drop is little, and blank temperature is uniform,
The deformation of steel pipe each several part is uniform；It is suitable for the difficult deformable metal that processing rolling and forging method processing are had any problem or even cannot be processed
Material, can produce bimetallic material and odd-shaped cross section steel pipe；Size and dimension high precision, steel pipe specification limit width are maximum outer
Footpath 1200mm, thickest 200mm；Technological process is short, and production efficiency is high.
In heating-up temperature and tolerance, heat time heating time, stripping time, opportunity, the angle of heating is aided in, auxiliary heating
Gas pressure, while determine hot spinning mold materials and mold shape size, main frame linear velocity, main frame clamping force, this
The determination of parameters in series constitutes the thermoforming process technology of high pressure air bottle.By infrared thermometry control technology, detect
After steel pipe heating-up temperature, automatic tapping, clamping to molding main-machine, then opportunity, the angle of auxiliary heating is determined by infrared thermometry
Degree etc., automatic drawing spinning after temperature reaches.
Technical scheme is specifically addressed with reference to specific embodiment.
Embodiment 1：
A kind of high-pressure seamless gas storage cylinder of the present invention, using 38CrNi3MoVA as raw material, 38CrNi3MoVA into
Divide and be by percentage to the quality：Carbon 0.33, violent 0.30, silicon 0.37, chromium 1.20, nickel 3.10, molybdenum 0.45, vanadium 0.14, copper 0.15, tungsten
0.20, sulfur 0.005, phosphorus 0.006, arsenic 0.013, stannum 0.010, lead 0.006, antimony 0.007, bismuth 0.010, hydrogen 0.0001, oxygen
0.0025, nitrogen 0.0080, remaining are ferrum.
The present invention also provides a kind of manufacturing process of high-pressure seamless gas storage cylinder, comprises the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with quality hundred
Ratio is divided to be calculated as：Carbon 0.33, violent 0.30, silicon 0.37, chromium 1.20, nickel 3.10, molybdenum 0.45, vanadium 0.14, copper 0.15, tungsten 0.20, sulfur
0.005, phosphorus 0.006, arsenic 0.013, stannum 0.010, lead 0.006, antimony 0.007, bismuth 0.010, hydrogen 0.0001, oxygen 0.0025, nitrogen
0.0080, remaining is ferrum, makes seamless steel pipe by casting, upset enclosed, punching base and vertical extrusion molding.
Step 2, the two ends hot-spinning reducing shaping of seamless steel pipe, forms bottle.
Step 3, carries out normalizing, quenching and tempering heat treatment to bottle, and wherein, normalizing temperature is 850 DEG C, temperature retention time
For 120min；Hardening heat is 750 DEG C, and temperature retention time is 120min；Temperature is 650 DEG C, and temperature retention time is 140min.
Step 4, carries out chemical plating to inner vessel surface, and coating adopts NI-P alloys, and the phosphorus content of NI-P alloys is 8%
Wt, 30 μm of thickness of coating；Bottle outer surface applies ATO ultra pottery anticorrosive materials AM-C.
The gas storage cylinder that is made by above-mentioned manufacturing process, by 38CrNi3MoVA materials and 921A under the same conditions
The comparative determination of material corrosion speed, measurement result are shown in Table 1-1.
Table 1-1 38CrNi3MoVA materials and 921A material corrosion rate determination tables
Result of the test shows 38CrNi3MoVA tube materials decay resistance better than 921A steel plates and weld seam.
After product heat treatment, mechanics performance determining result is as shown in table 1-2.
Mechanics performance determining table after table 1-2 product heat treatments
Result of the test shows that the intensity of 38CrNi3MoVA gas storage cylinders, ballistic work are superior to 10CrNi3MoVA.
Embodiment 2：
A kind of high-pressure seamless gas storage cylinder of the present invention, using 38CrNi3MoVA as raw material, 38CrNi3MoVA into
Divide and be by percentage to the quality：Carbon 0.35, violent 0.27, silicon 0.17, chromium 1.45, nickel 3.00, molybdenum 0.44, vanadium 0.15, copper 0.20, tungsten
0.11, sulfur 0.006, phosphorus 0.010, arsenic 0.020, stannum 0.005, lead 0.006, antimony 0.009, bismuth 0.009, hydrogen 0.0001, oxygen
0.0025, nitrogen 0.0070, remaining are ferrum.
The present invention also provides a kind of manufacturing process of high-pressure seamless gas storage cylinder, comprises the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with quality hundred
Ratio is divided to be calculated as：Carbon 0.35, violent 0.27, silicon 0.17, chromium 1.45, nickel 3.00, molybdenum 0.44, vanadium 0.15, copper 0.20, tungsten 0.11, sulfur
0.006, phosphorus 0.010, arsenic 0.020, stannum 0.005, lead 0.006, antimony 0.009, bismuth 0.009, hydrogen 0.0001, oxygen 0.0025, nitrogen
0.0070, remaining is ferrum, makes seamless steel pipe by casting, upset enclosed, punching base and vertical extrusion molding.
Step 2, the two ends hot-spinning reducing shaping of seamless steel pipe, forms bottle.
Step 3, carries out normalizing, quenching and tempering heat treatment to bottle, and wherein, normalizing temperature is 850 DEG C, temperature retention time
For 120min；Hardening heat is 750 DEG C, and temperature retention time is 120min；Temperature is 650 DEG C, and temperature retention time is 140min.
Step 4, carries out chemical plating to inner vessel surface, and coating adopts NI-P alloys, and the phosphorus content of NI-P alloys is 7%
Wt, 30 μm of thickness of coating；Bottle outer surface applies ATO ultra pottery anticorrosive materials AM-C.
The gas storage cylinder that is made by above-mentioned manufacturing process, by 38CrNi3MoVA materials and 921A under the same conditions
The comparative determination of material corrosion speed, measurement result are shown in Table 2-1.
Table 2-1 38CrNi3MoVA materials and 921A material corrosion rate determination tables
Result of the test shows 38CrNi3MoVA tube materials decay resistance better than 921A steel plates and weld seam.
After product heat treatment, mechanics performance determining result is as shown in table 2-2.
Mechanics performance determining table after table 2-2 product heat treatments
Result of the test shows that the intensity of 38CrNi3MoVA gas storage cylinders, ballistic work are superior to 10CrNi3MoVA.
Embodiment 3：
A kind of high-pressure seamless gas storage cylinder of the present invention, using 38CrNi3MoVA as raw material, 38CrNi3MoVA into
Divide and be by percentage to the quality：Carbon 0.40, violent 0.47, silicon 0.17, chromium 1.40, nickel 3.50, molybdenum 0.35, vanadium 0.10, copper 0.19, tungsten
0.20, sulfur 0.008, phosphorus 0.010, arsenic 0.030, stannum 0.005, lead 0.010, antimony 0.010, bismuth 0.009, hydrogen 0.0001, oxygen
0.0024, nitrogen 0.0070, remaining are ferrum.
The present invention also provides a kind of manufacturing process of high-pressure seamless gas storage cylinder, comprises the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with quality hundred
Ratio is divided to be calculated as：Carbon 0.40, violent 0.47, silicon 0.17, chromium 1.40, nickel 3.50, molybdenum 0.35, vanadium 0.10, copper 0.19, tungsten 0.20, sulfur
0.008, phosphorus 0.010, arsenic 0.030, stannum 0.005, lead 0.010, antimony 0.010, bismuth 0.009, hydrogen 0.0001, oxygen 0.0024, nitrogen
0.0070, remaining is ferrum, makes seamless steel pipe by casting, upset enclosed, punching base and vertical extrusion molding.
Step 2, the two ends hot-spinning reducing shaping of seamless steel pipe, forms bottle.
Step 3, carries out normalizing, quenching and tempering heat treatment to bottle, and wherein, normalizing temperature is 850 DEG C, temperature retention time
For 120min；Hardening heat is 750 DEG C, and temperature retention time is 120min；Temperature is 650 DEG C, and temperature retention time is 140min.
Step 4, carries out chemical plating to inner vessel surface, and coating adopts NI-P alloys, and the phosphorus content of NI-P alloys is 8%
Wt, 28 μm of thickness of coating；Bottle outer surface applies ATO ultra pottery anticorrosive materials AM-C.
The gas storage cylinder that is made by above-mentioned manufacturing process, by 38CrNi3MoVA materials and 921A under the same conditions
The comparative determination of material corrosion speed, measurement result are shown in Table 3-1.
Table 3-1 38CrNi3MoVA materials and 921A material corrosion rate determination tables
Result of the test shows 38CrNi3MoVA tube materials decay resistance better than 921A steel plates and weld seam.
After product heat treatment, mechanics performance determining result is as shown in table 3-2.
Mechanics performance determining table after table 3-2 product heat treatments
Result of the test shows that the intensity of 38CrNi3MoVA gas storage cylinders, ballistic work are superior to 10CrNi3MoVA.
Embodiment 4：
A kind of high-pressure seamless gas storage cylinder of the present invention, using 38CrNi3MoVA as raw material, 38CrNi3MoVA into
Divide and be by percentage to the quality：Carbon 0.36, violent 0.36, silicon 0.17, chromium 1.40, nickel 3.50, molybdenum 0.35, vanadium 0.10, copper 0.19, tungsten
0.20, sulfur 0.008, phosphorus 0.010, arsenic 0.030, stannum 0.005, lead 0.010, antimony 0.010, bismuth 0.009, hydrogen 0.0001, oxygen
0.0024, nitrogen 0.0070, remaining are ferrum.
The present invention also provides a kind of manufacturing process of high-pressure seamless gas storage cylinder, comprises the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with quality hundred
Ratio is divided to be calculated as：Carbon 0.36, violent 0.36, silicon 0.17, chromium 1.40, nickel 3.50, molybdenum 0.35, vanadium 0.10, copper 0.19, tungsten 0.20, sulfur
0.008, phosphorus 0.010, arsenic 0.030, stannum 0.005, lead 0.010, antimony 0.010, bismuth 0.009, hydrogen 0.0001, oxygen 0.0024, nitrogen
0.0070, remaining is ferrum, makes seamless steel pipe by casting, upset enclosed, punching base and vertical extrusion molding.
Step 2, the two ends hot-spinning reducing shaping of seamless steel pipe, forms bottle.
Step 3, carries out normalizing, quenching and tempering heat treatment to bottle, and wherein, normalizing temperature is 850 DEG C, temperature retention time
For 120min；Hardening heat is 750 DEG C, and temperature retention time is 120min；Temperature is 650 DEG C, and temperature retention time is 140min.
Step 4, carries out chemical plating to inner vessel surface, and coating adopts NI-P alloys, and the phosphorus content of NI-P alloys is 8%
Wt, 28 μm of thickness of coating；Bottle outer surface applies ATO ultra pottery anticorrosive materials AM-C.
The gas storage cylinder that is made by above-mentioned manufacturing process, by 38CrNi3MoVA materials and 921A under the same conditions
The comparative determination of material corrosion speed, measurement result are shown in Table 4-1.
Table 4-1 38CrNi3MoVA materials and 921A material corrosion rate determination tables
Result of the test shows 38CrNi3MoVA tube materials decay resistance better than 921A steel plates and weld seam.
After product heat treatment, mechanics performance determining result is as shown in table 4-2.
Mechanics performance determining table after table 4-2 product heat treatments
Result of the test shows that the intensity of 38CrNi3MoVA gas storage cylinders, ballistic work are superior to 10CrNi3MoVA.
Embodiment 5：
A kind of high-pressure seamless gas storage cylinder of the present invention, using 38CrNi3MoVA as raw material, 38CrNi3MoVA into
Divide and be by percentage to the quality：Carbon 0.36, violent 0.36, silicon 0.17, chromium 1.40, nickel 3.50, molybdenum 0.35, vanadium 0.10, copper 0.19, tungsten
0.20, sulfur 0.008, phosphorus 0.010, arsenic 0.030, stannum 0.005, lead 0.010, antimony 0.010, bismuth 0.009, hydrogen 0.0001, oxygen
0.0024, nitrogen 0.0070, remaining are ferrum.
The present invention also provides a kind of manufacturing process of high-pressure seamless gas storage cylinder, comprises the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with quality hundred
Ratio is divided to be calculated as：Carbon 0.36, violent 0.36, silicon 0.17, chromium 1.40, nickel 3.50, molybdenum 0.35, vanadium 0.10, copper 0.19, tungsten 0.20, sulfur
0.008, phosphorus 0.010, arsenic 0.030, stannum 0.005, lead 0.010, antimony 0.010, bismuth 0.009, hydrogen 0.0001, oxygen 0.0024, nitrogen
0.0070, remaining is ferrum, makes seamless steel pipe by casting, upset enclosed, punching base and vertical extrusion molding.
Step 2, the two ends hot-spinning reducing molding of seamless steel pipe form bottle.
Step 3, carries out normalizing, quenching and tempering heat treatment to bottle, wherein, 865 DEG C of normalizing, temperature retention time is
120min；Hardening heat is 775 DEG C, and temperature retention time is 120min；Temperature is 660 DEG C, and temperature retention time is 140min.
Step 4, carries out chemical plating to inner vessel surface, and coating adopts NI-P alloys, and the phosphorus content of NI-P alloys is 8%
Wt, 28 μm of thickness of coating；Bottle outer surface applies ATO ultra pottery anticorrosive materials AM-C.
The gas storage cylinder that is made by above-mentioned manufacturing process, mechanics performance determining result such as table 5-1 institutes after product heat treatment
Show.
Mechanics performance determining table after table 5-1 product heat treatments
Result of the test shows that the intensity of 38CrNi3MoVA gas storage cylinders, ballistic work are superior to 10CrNi3MoVA.
Embodiment 6：
A kind of high-pressure seamless gas storage cylinder of the present invention, using 38CrNi3MoVA as raw material, 38CrNi3MoVA into
Divide and be by percentage to the quality：Carbon 0.36, violent 0.36, silicon 0.17, chromium 1.40, nickel 3.50, molybdenum 0.35, vanadium 0.10, copper 0.19, tungsten
0.20, sulfur 0.008, phosphorus 0.010, arsenic 0.030, stannum 0.005, lead 0.010, antimony 0.010, bismuth 0.009, hydrogen 0.0001, oxygen
0.0024, nitrogen 0.0070, remaining are ferrum.
The present invention also provides a kind of manufacturing process of high-pressure seamless gas storage cylinder, comprises the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with quality hundred
Ratio is divided to be calculated as：Carbon 0.36, violent 0.36, silicon 0.17, chromium 1.40, nickel 3.50, molybdenum 0.35, vanadium 0.10, copper 0.19, tungsten 0.20, sulfur
0.008, phosphorus 0.010, arsenic 0.030, stannum 0.005, lead 0.010, antimony 0.010, bismuth 0.009, hydrogen 0.0001, oxygen 0.0024, nitrogen
0.0070, remaining is ferrum, makes seamless steel pipe by casting, upset enclosed, punching base and vertical extrusion molding.
Step 2, the two ends hot-spinning reducing molding of seamless steel pipe form bottle.
Step 3, carries out normalizing, quenching and tempering heat treatment to bottle, wherein, 845 DEG C of normalizing, temperature retention time is
120min；Hardening heat is 745 DEG C, and temperature retention time is 120min；Temperature is 640 DEG C, and temperature retention time is 140min.
Step 4, carries out chemical plating to inner vessel surface, and coating adopts NI-P alloys, and the phosphorus content of NI-P alloys is 8%
Wt, 28 μm of thickness of coating；Bottle outer surface applies ATO ultra pottery anticorrosive materials AM-C.
The gas storage cylinder that is made by above-mentioned manufacturing process, mechanics performance determining result such as table 6-1 institutes after product heat treatment
Show.
Mechanics performance determining table after table 6-1 product heat treatments
Result of the test shows that the intensity of 38CrNi3MoVA gas storage cylinders, ballistic work are superior to 10CrNi3MoVA.
Claims (4)
1. a kind of manufacturing process of high-pressure seamless gas storage cylinder, it is characterised in that comprise the following steps:
Step one, manufactures seamless steel pipe using 38CrNi3MoVA as raw material, and the composition of 38CrNi3MoVA is with mass percent
It is calculated as：Carbon 0.33～0.40, violent 0.27～0.47, silicon 0.17～0.37, chromium 1.20～1.45, nickel 3.00～3.50, molybdenum 0.35
～0.45, vanadium 0.10～0.15, copper≤0.20, tungsten≤0.20, sulfur≤0.008, phosphorus≤0.010, remaining are ferrum and impurity；
The composition of the impurity is：Arsenic≤0.030, stannum≤0.010, lead≤0.010, antimony≤0.010, bismuth≤0.010, hydrogen≤
0.0001, oxygen≤0.0025, nitrogen≤0.0080；
Step 2, the two ends hot-spinning reducing shaping of seamless steel pipe, forms bottle；
Step 3, carries out normalizing, quenching and tempering heat treatment successively to bottle, specifically, bottle is heated to 845～865 DEG C,
Temperature retention time is 110～120min, carries out normalized treatment to bottle；Bottle is heated to 745～775 DEG C, during insulation after normalizing
Between for 110～120min, Quenching Treatment is carried out to bottle；Bottle is heated to 640～660 DEG C after quenching, temperature retention time is 120
～160min, carries out temper to bottle.
2. manufacturing process according to claim 1, it is characterised in that also include step 4, to inner vessel surface
Plating is learned, coating adopts NI-P alloys, and in more than 8%wt, thickness of coating is not less than 30 μm to the phosphorus content of NI-P alloys；Bottle appearance
Face applies ATO ultra pottery anticorrosive materials AM-C.
3. manufacturing process according to claim 1, it is characterised in that in step one, using 38CrNi3MoVA as former material
Material, makes seamless steel pipe by casting, upset enclosed, punching base and vertical extrusion molding.
4. manufacturing process according to claim 1, it is characterised in that in step 3, carries out normalizing, quenching and returns to bottle
Burning hot process, wherein, normalizing temperature is 850 DEG C, and temperature retention time is 120min；Hardening heat is 750 DEG C, and temperature retention time is
120min；Temperature is 650 DEG C, and temperature retention time is 140min.
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| CN107142428B (en) * | 2017-04-19 | 2019-01-01 | 马鞍山市鑫龙特钢有限公司 | A kind of preparation method of Cr-Mo-Ni steel alloy |
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