CN105779706B - 12Cr18Ni9 stainless steel rivet solid solution treatment processes - Google Patents
12Cr18Ni9 stainless steel rivet solid solution treatment processes Download PDFInfo
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- CN105779706B CN105779706B CN201610330921.3A CN201610330921A CN105779706B CN 105779706 B CN105779706 B CN 105779706B CN 201610330921 A CN201610330921 A CN 201610330921A CN 105779706 B CN105779706 B CN 105779706B
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- quenching
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- 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
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
12Cr18Ni9 stainless steel rivet solid solution treatment processes, it is related to a kind of solid solution treatment process.After the present invention solves the existing solid solution treatment process of use to the progress solution treatment of 12Cr18Ni9 stainless steel rivets, rivet surface aerobicization phenomenon, and the addition of charcoal powder easily causes environmental pollution and human health damage, and need the problem of quenching of coming out of the stove.12Cr18Ni9 stainless steel rivets after machine-shaping are directly placed into the charging basket of vacuum air-quenching furnace by the present invention, close fire door, after vacuum air-quenching stove evacuation, vacuum air-quenching furnace is warming up to 840~860 DEG C, it is incubated 40~50min, 1100~1120 DEG C are warming up to again, is incubated 70~130min, are then filled with when air quenching gas directly carries out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets and are come out of the stove into stove.The present invention is used for rivet solution treatment.
Description
Technical field
The present invention relates to a kind of solid solution treatment process, more particularly to a kind of 12Cr18Ni9 stainless steel rivets solution treatment work
Skill.
Background technology
When riveted application is directly carried out after 12Cr18Ni9 stainless steel rivet machine-shapings, easily there is ailhead cracking or fracture
Situation, analysis reason be the phenomenon for existing in rivet process flow harden.To eliminate flow harden, typically to cold working
Rivet after shaping carries out solution treatment, makes hardness≤150HV1 after its solution treatment.
Solid solution treatment process is carried out generally in high-temperature box type electric furnace at present, rivet packing in iron drums, and in bucket plus charcoal powder is protected
Shield.Come out of the stove water quenching after being heated to 1080~1100 DEG C of insulations 3~5 minutes, to reach the purpose of softening.This solid solution treatment process
Problems be present：
(1) the rivet surface aerobicization phenomenon after solution treatment, pickling or optical crosstalk processing need to be carried out.
(2) when rivet heating is protected with charcoal powder, the addition of charcoal powder easily causes environmental pollution, at the same during caused by
Dust has potential hazard to operator's health.
(3) rivet needs quenching of coming out of the stove, and operates cumbersome.
The content of the invention
The present invention in order to solve using existing solid solution treatment process to 12Cr18Ni9 stainless steel rivets carry out solution treatment
Afterwards, rivet surface aerobicization phenomenon, and the addition of charcoal powder easily causes environmental pollution and human health damage, and need to come out of the stove
A kind of the problem of quenching, there is provided 12Cr18Ni9 stainless steel rivets solid solution treatment process.
In order to solve the above-mentioned technical problem the present invention adopts the technical scheme that：The present invention is by after machine-shaping
12Cr18Ni9 stainless steel rivets are directly placed into the charging basket of vacuum air-quenching furnace, close fire door, after vacuum air-quenching stove evacuation,
Vacuum air-quenching furnace is warming up to 840~860 DEG C, is incubated 40~50min, then is warming up to 1100~1120 DEG C, insulation 70~
130min, then it is filled with when air quenching gas directly carries out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets to go out into stove
Stove, complete solution treatment；
Preferably, air quenching gas is nitrogen；
Preferably, the pressure for being filled with nitrogen is 5~7bar；
Preferably, heating rate when vacuum air-quenching furnace being warming up into 840~860 DEG C is 6~8 DEG C/min, then is warming up to
Heating rate at 1100~1120 DEG C is 6~8 DEG C/min.
The beneficial effects of the invention are as follows：
The present invention carries out solution treatment using vacuum air-quenching furnace to rivet, without using charcoal powder, improves heat treatment ring
Border, avoid pollution of the charcoal powder to environment and human body is damaged, realize clean heat treatment；Due to being in vacuum environment
Lower carry out solution treatment, the rivet non-oxidation phenomenon after solution treatment produce, therefore need not carry out follow-up pickling or optical crosstalk processing,
Rivet surface-brightening, and vacuum air-quenching furnace can realize air quenching in stove, whole processing procedure can realize that parameter programization is set, operation
Simple specification, realize the automation of heat treatment.
Embodiment
Embodiment one：A kind of 12Cr18Ni9 stainless steel rivets solid solution treatment process of present embodiment is to add
12Cr18Ni9 stainless steel rivets after work shaping are directly placed into the charging basket of vacuum air-quenching furnace, fire door are closed, to vacuum air-quenching furnace
After vacuumizing, vacuum air-quenching furnace is warming up to 840~860 DEG C, is incubated 40~50min, then be warming up to 1100~1120 DEG C, be incubated
70~130min, air quenching gas is then filled with into stove air quenching is directly carried out to 12Cr18Ni9 stainless steel rivets to less than 45 DEG C
When come out of the stove, complete solution treatment.
The model B84T vacuum air-quenching furnaces or VGQ-200 high-pressure vacuum air-quenching furnaces of used vacuum air-quenching furnace, when
During using B84T vacuum air-quenching furnaces, vacuum in stove should be made to reach 0.6~1.0mbar, when use VGQ-200 high-pressure vacuum air-quenchings
During stove, vacuum in stove should be made to reach 0.1~10Pa.
Embodiment two：The air quenching gas of present embodiment is nitrogen.Meet technological requirement.Other methods with it is specific
Embodiment one is identical.
Embodiment three：The pressure for being filled with nitrogen of present embodiment is 5~7bar.Meet the cooldown rate of workpiece
It is required that.Other methods are identical with embodiment two.
Embodiment four：The pressure for being filled with nitrogen of present embodiment is 6bar.Meet that the cooldown rate of workpiece will
Ask.Other methods are identical with embodiment three.
Embodiment five：Heating rate when vacuum air-quenching furnace being warming up into 840~860 DEG C in present embodiment is
6~8 DEG C/min, then heating rate when being warming up to 1100~1120 DEG C is 6~8 DEG C/min.It can so ensure that workpiece reaches good
Good solid solution effect.Other methods are identical with embodiment one, two, three or four.
Embodiment six：Heating rate when vacuum air-quenching furnace being warming up into 840~860 DEG C in present embodiment is
7 DEG C/min, then heating rate when being warming up to 1100~1120 DEG C is 7 DEG C/min.It can so ensure that workpiece reaches good and consolidated
Molten effect.Other methods are identical with embodiment five.
Embodiment seven：Vacuum air-quenching furnace is warming up to 850 DEG C in present embodiment, is incubated 45min, then be warming up to
1110 DEG C, it is incubated 100min.Superfluous mutually fully dissolving can so be ensured, eliminate flow harden.Other methods and specific embodiment party
Formula six is identical.
Specific embodiment
Specific embodiment one：
12Cr18Ni9 stainless steel rivets after machine-shaping are directly placed into the charging basket of B84T vacuum air-quenching furnaces, closed
Fire door, to vacuum air-quenching stove evacuation, vacuum in stove is reached 0.6mbar, vacuum air-quenching furnace is warming up to 850 DEG C, heating
8 DEG C/min of speed, 45min is incubated, then is warming up to 1110 DEG C, 6 DEG C/min of heating rate, be incubated 100min, then filled into stove
Enter when nitrogen directly carries out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets and come out of the stove, nitrogen pressure 5bar, complete solid
Molten processing, the rivet surface-brightening after processing, non-oxidation, after rivet solution treatment, hardness number 143HV1.
Specific embodiment two：
12Cr18Ni9 stainless steel rivets after machine-shaping are directly placed into the charging basket of VGQ-200 vacuum air-quenching furnaces, closed
Closed furnace door, to vacuum air-quenching stove evacuation, vacuum in stove is reached 8Pa, vacuum air-quenching furnace is warming up to 840 DEG C, heating speed
6 DEG C/min of rate, 50min is incubated, then is warming up to 1100 DEG C, 6 DEG C/min of heating rate, be incubated 130min, be then filled with into stove
Nitrogen is come out of the stove when directly carrying out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets, nitrogen pressure 6bar, completes solid solution
Processing, the rivet surface-brightening after processing, non-oxidation, after rivet solution treatment, hardness number 150HV1.
Specific embodiment three：
12Cr18Ni9 stainless steel rivets after machine-shaping are directly placed into the charging basket of VGQ-200 vacuum air-quenching furnaces, closed
Closed furnace door, to vacuum air-quenching stove evacuation, vacuum in stove is reached 5Pa, vacuum air-quenching furnace is warming up to 845 DEG C, heating speed
6 DEG C/min of rate, 50min is incubated, then is warming up to 1115 DEG C, 7 DEG C/min of heating rate, be incubated 110min, be then filled with into stove
Nitrogen is come out of the stove when directly carrying out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets, nitrogen pressure 6bar, completes solid solution
Processing, the rivet surface-brightening after processing, non-oxidation, after rivet solution treatment, hardness number 130HV1.
Specific embodiment four：
12Cr18Ni9 stainless steel rivets after machine-shaping are directly placed into the charging basket of B84T vacuum air-quenching furnaces, closed
Fire door, to vacuum air-quenching stove evacuation, vacuum in stove is reached 1.0mbar, vacuum air-quenching furnace is warming up to 855 DEG C, heating
8 DEG C/min of speed, 45min is incubated, then is warming up to 1115 DEG C, 8 DEG C/min of heating rate, be incubated 120min, then filled into stove
Enter when nitrogen directly carries out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets and come out of the stove, nitrogen pressure 7bar, complete solid
Molten processing, the rivet surface-brightening after processing, non-oxidation, after rivet solution treatment, hardness number 134HV1.
Specific embodiment five：
12Cr18Ni9 stainless steel rivets after machine-shaping are directly placed into the charging basket of B84T vacuum air-quenching furnaces, closed
Fire door, to vacuum air-quenching stove evacuation, vacuum in stove is reached 0.8mbar, vacuum air-quenching furnace is warming up to 860 DEG C, heating
7 DEG C/min of speed, 40min is incubated, then is warming up to 1120 DEG C, 8 DEG C/min of heating rate, be incubated 75min, be then filled with into stove
Nitrogen is come out of the stove when directly carrying out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets, nitrogen pressure 6bar, completes solid solution
Processing, the rivet surface-brightening after processing, non-oxidation, after rivet solution treatment, hardness number 141HV1.
Specific embodiment six：
12Cr18Ni9 stainless steel rivets after machine-shaping are directly placed into the charging basket of B84T vacuum air-quenching furnaces, closed
Fire door, to vacuum air-quenching stove evacuation, vacuum in stove is reached 0.8mbar, vacuum air-quenching furnace is warming up to 860 DEG C, heating
8 DEG C/min of speed, 40min is incubated, then is warming up to 1100 DEG C, 8 DEG C/min of heating rate, be incubated 125min, then filled into stove
Enter when nitrogen directly carries out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets and come out of the stove, nitrogen pressure 5bar, complete solid
Molten processing, the rivet surface-brightening after processing, non-oxidation, after rivet solution treatment, hardness number 136HV1.
Claims (5)
1.12Cr18Ni9 stainless steel rivet solid solution treatment processes, it is characterised in that：12Cr18Ni9 after machine-shaping is stainless
Steel rivet is directly placed into the charging basket of vacuum air-quenching furnace, fire door is closed, after vacuum air-quenching stove evacuation, by vacuum air-quenching furnace liter
Temperature is incubated 40~50min to 840~860 DEG C, then is warming up to 1100~1120 DEG C, is incubated 70~130min, is then filled into stove
Enter when air quenching gas directly carries out air quenching to less than 45 DEG C to 12Cr18Ni9 stainless steel rivets and come out of the stove, complete solution treatment；
The air quenching gas is nitrogen, and the pressure for being filled with nitrogen is 5~7bar.
2. 12Cr18Ni9 stainless steel rivets solid solution treatment process according to claim 1, it is characterised in that：It is filled with nitrogen
Pressure be 6bar.
3. 12Cr18Ni9 stainless steel rivets solid solution treatment process according to claim 1 or 2, it is characterised in that：By vacuum
Heating rate when air-quenching furnace is warming up to 840~860 DEG C is 6~8 DEG C/min, then heating speed when being warming up to 1100~1120 DEG C
Rate is 6~8 DEG C/min.
4. 12Cr18Ni9 stainless steel rivets solid solution treatment process according to claim 3, it is characterised in that：By vacuum gas
Heating rate when stove of quenching is warming up to 840~860 DEG C is 7 DEG C/min, then heating rate when being warming up to 1100~1120 DEG C is 7
℃/min。
5. 12Cr18Ni9 stainless steel rivets solid solution treatment process according to claim 4, it is characterised in that：By vacuum gas
Stove of quenching is warming up to 850 DEG C, is incubated 45min, then is warming up to 1110 DEG C, is incubated 100min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610330921.3A CN105779706B (en) | 2016-05-18 | 2016-05-18 | 12Cr18Ni9 stainless steel rivet solid solution treatment processes |
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| CN201610330921.3A CN105779706B (en) | 2016-05-18 | 2016-05-18 | 12Cr18Ni9 stainless steel rivet solid solution treatment processes |
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| CN105779706A CN105779706A (en) | 2016-07-20 |
| CN105779706B true CN105779706B (en) | 2018-02-09 |
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