CN106086351A - A kind of method reducing boracic heat-resistance stainless steel C type impurity - Google Patents
A kind of method reducing boracic heat-resistance stainless steel C type impurity Download PDFInfo
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- CN106086351A CN106086351A CN201610453520.7A CN201610453520A CN106086351A CN 106086351 A CN106086351 A CN 106086351A CN 201610453520 A CN201610453520 A CN 201610453520A CN 106086351 A CN106086351 A CN 106086351A
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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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
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Abstract
The invention discloses a kind of method reducing boracic heat-resistance stainless steel C type impurity, the method comprises the following steps: first, by Heating Steel Ingots to 1150 ~ 1180 DEG C, after being incubated 2 ~ 5 hours, and forging of coming out of the stove, make square billet；Then, square billet reheating system 1230 ~ 1260 DEG C, after being incubated 16 ~ 25 hours, stove is cooled to 1050 DEG C, is incubated 2 ~ 3 hours, forges finished product after being then again heated to 1150 ~ 1180 DEG C of insulations 2 ~ 3 hours；Finally, being placed in annealing furnace by the finished product bar of forging and be heated to 730 ~ 780 DEG C, after being incubated 12 ~ 20 hours, stove is cooled to 500 DEG C, air cooling of coming out of the stove；This kind reduces the performance of the method raising product of boracic heat-resistance stainless steel C type impurity, heat treatment deformation can be reduced, the boride of C type impurity in alloy can be disposed, improve alloy heat resistance in use, the boracic heat-resistance stainless steel metal lographic examination C type impurity produced by the present invention is qualified, can improve product lumber recovery.
Description
Technical field
A kind of method that the present invention relates to rustless steel C type impurity, is specially one and reduces boracic heat-resistance stainless steel C class folder
The method of foreign material, belongs to alloy material applied technical field.
Background technology
Along with the development of science and technology, specific alloy yield and kind are needed expanding day, to the requirement of quality also
More and more stricter, harsh, in recent years, around improving specific alloy performance, quality, kind, efficiency, reduction specific alloy cost,
The aspects such as energy-saving and cost-reducing, environmental friendliness have employed series of new techniques, new technology, new equipment so that the cleanliness factor of specific alloy,
The uniformity, structure refinement degree and dimensional accuracy etc. have had large increase, and along with the development of turbine making technology, single-machine capacity is more
Come the biggest, steam turbine to super-critical and ultra super-critical power unit develop, its vapor (steam) temperature and operating pressure respectively by original 520 DEG C,
15MPa brings up to 600 DEG C (higher to 650 DEG C), 26～30MPa, this just performance and clarity to material propose higher
Requirement, a kind of high-performance boracic jessop can meet the demand, but in actual production, it is deposited due to boron
, and it is easily formed the boride of a kind of similar C type impurity, cause the C type impurity when metallographic examination to exceed standard or field trash
Summation exceeds standard and produces waste product, reduction lumber recovery, and the irregularities formed due to it, causes detection limit to strengthen and reduce life
Produce efficiency.
Summary of the invention
The purpose of the present invention is that provides a kind of boracic heat-resistance stainless steel C class that reduces to be mingled with to solve the problems referred to above
The method of thing.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of reduction boracic heat-resistance stainless steel C type impurity
Method, specifically comprise the following steps that
Step A, by Heating Steel Ingots to 1150 ~ 1180 DEG C, after being incubated 2 ~ 5 hours, forging of coming out of the stove, make square billet；
Step B, the square billet of step A being again heated to 1230 ~ 1260 DEG C, after being incubated 16 ~ 25 hours, stove is cooled to 1050 DEG C, is incubated 2
~ 3 hours, after being then again heated to 1150 ~ 1180 DEG C of insulations 2 ~ 3 hours, forge finished product；
Step C, the steel ingot forged in step B being carried out blanking, carry out Quenching Treatment after blanking, temperature during quenching is
800-900 DEG C, the cold 2-3h of the laggard line space that quenches, the alloy that air cooling is good is put and places into insulation 3-5h, forging in 500 DEG C-550 DEG C
Finished product；
Step D, the finished product bar of step C forging is placed in annealing furnace it is heated to 730 ~ 780 DEG C, after being incubated 12 ~ 20 hours, stove
It is cooled to 500 DEG C, air cooling of coming out of the stove.
Preferably, the forging process in step A is as follows: steel ingot is carried out alloy phase change process, is moved back by the steel ingot of good heat insulation
It is cooled fast to 800 DEG C after fire, then proceeds to holding furnace is carried out phase transformation, then be warming up to uniform temperature and carry out Forge Heating.
Preferably, during in step B, square billet reheats, adding weight percentage is 2-3.5% electrolytic aluminium, weight hundred
Dividing content is that 0.003-0.008% ferronickel sufficiently stirs.
The invention has the beneficial effects as follows: the alloy of the method smelting that this kind reduces boracic heat-resistance stainless steel C type impurity exists
There is under high temperature good mechanical performance and chemical stability, the performance that can improve product very well wherein added, can subtract
Few heat treatment deformation, it is possible to dispose the boride of C type impurity in alloy, improve alloy thermostability in use
Can, thus improving the life-span of the product that this kind of alloy manufactures, the boracic heat-resistance stainless steel metal lographic examination C type impurity of production closes
Lattice, can improve product lumber recovery, have good economic benefit and social benefit, are suitable for promoting the use of.
Detailed description of the invention
Below in conjunction with in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the present invention
In embodiment, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into the scope of protection of the invention.
Embodiment one:
A kind of method reducing boracic heat-resistance stainless steel C type impurity, specifically comprises the following steps that
Step A, by Heating Steel Ingots to 1150 ~ 1180 DEG C, after being incubated 2 ~ 5 hours, forging of coming out of the stove, make square billet；
Step B, the square billet of step A being again heated to 1230 ~ 1260 DEG C, after being incubated 16 ~ 25 hours, stove is cooled to 1050 DEG C, is incubated 2
~ 3 hours, after being then again heated to 1150 ~ 1180 DEG C of insulations 2 ~ 3 hours, forge finished product；
Step C, the steel ingot forged in step B being carried out blanking, carry out Quenching Treatment after blanking, temperature during quenching is
800-900 DEG C, the cold 2-3h of the laggard line space that quenches, the alloy that air cooling is good is put and places into insulation 3-5h, forging in 500 DEG C-550 DEG C
Finished product；
Step D, the finished product bar of step C forging is placed in annealing furnace it is heated to 730 ~ 780 DEG C, after being incubated 12 ~ 20 hours, stove
It is cooled to 500 DEG C, air cooling of coming out of the stove.
Forging process in step A is as follows: steel ingot is carried out alloy phase change process, by quick after the ingot annealing of good heat insulation
It is cooled to 800 DEG C, then proceeds to holding furnace is carried out phase transformation, then be warming up to uniform temperature and carry out Forge Heating；Square billet in step B
During reheating, add weight percentage be 3.5% electrolytic aluminium, weight percentage be that 0.008% ferronickel is carried out sufficiently
Stirring.
Embodiment two:
A kind of method reducing boracic heat-resistance stainless steel C type impurity, specifically comprises the following steps that
Step A, by Heating Steel Ingots to 1150 ~ 1180 DEG C, after being incubated 2 ~ 5 hours, forging of coming out of the stove, make square billet；
Step B, the square billet of step A being again heated to 1230 ~ 1260 DEG C, after being incubated 16 ~ 25 hours, stove is cooled to 1050 DEG C, is incubated 2
~ 3 hours, after being then again heated to 1150 ~ 1180 DEG C of insulations 2 ~ 3 hours, forge finished product；
Step C, the steel ingot forged in step B being carried out blanking, carry out Quenching Treatment after blanking, temperature during quenching is
800-900 DEG C, the cold 2-3h of the laggard line space that quenches, the alloy that air cooling is good is put and places into insulation 3-5h, forging in 500 DEG C-550 DEG C
Finished product；
Step D, the finished product bar of step C forging is placed in annealing furnace it is heated to 730 ~ 780 DEG C, after being incubated 12 ~ 20 hours, stove
It is cooled to 500 DEG C, air cooling of coming out of the stove.
Forging process in step A is as follows: steel ingot is carried out alloy phase change process, by quick after the ingot annealing of good heat insulation
It is cooled to 800 DEG C, then proceeds to holding furnace is carried out phase transformation, then be warming up to uniform temperature and carry out Forge Heating；Square billet in step B
During reheating, add weight percentage be 2% electrolytic aluminium, weight percentage be that 0.003% ferronickel sufficiently stirs
Mix.
Embodiment three:
A kind of method reducing boracic heat-resistance stainless steel C type impurity, specifically comprises the following steps that
Step A, by Heating Steel Ingots to 1150 ~ 1180 DEG C, after being incubated 2 ~ 5 hours, forging of coming out of the stove, make square billet；
Step B, the square billet of step A being again heated to 1230 ~ 1260 DEG C, after being incubated 16 ~ 25 hours, stove is cooled to 1050 DEG C, is incubated 2
~ 3 hours, after being then again heated to 1150 ~ 1180 DEG C of insulations 2 ~ 3 hours, forge finished product；
Step C, the steel ingot forged in step B being carried out blanking, carry out Quenching Treatment after blanking, temperature during quenching is
800-900 DEG C, the cold 2-3h of the laggard line space that quenches, the alloy that air cooling is good is put and places into insulation 3-5h, forging in 500 DEG C-550 DEG C
Finished product；
Step D, the finished product bar of step C forging is placed in annealing furnace it is heated to 730 ~ 780 DEG C, after being incubated 12 ~ 20 hours, stove
It is cooled to 500 DEG C, air cooling of coming out of the stove.
Forging process in step A is as follows: steel ingot is carried out alloy phase change process, by quick after the ingot annealing of good heat insulation
It is cooled to 800 DEG C, then proceeds to holding furnace is carried out phase transformation, then be warming up to uniform temperature and carry out Forge Heating；Square billet in step B
During reheating, add weight percentage be 3% electrolytic aluminium, weight percentage be that 0.005% ferronickel sufficiently stirs
Mix.
It is zero according to the alloy that embodiment one, two, three makes through detection, detection C type impurity, makes the method manufacture
Alloy there is good mechanical performance and chemical stability, reduce what the method for boracic heat-resistance stainless steel C type impurity was smelted
Alloy at high temperature has good mechanical performance and chemical stability, the performance that can improve product very well wherein added,
Heat treatment deformation can be reduced, it is possible to dispose the boride of C type impurity in alloy, improve alloy in use
Heat resistance, thus improve the life-span of the product that this kind of alloy manufactures, the boracic heat-resistance stainless steel metal lographic examination C class of production is mingled with
Thing is qualified, can improve product lumber recovery, thus improve the life-span of the product that this kind of alloy manufactures.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.Should not be considered as limiting involved claim by any labelling in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (3)
1. the method reducing boracic heat-resistance stainless steel C type impurity, it is characterised in that: specifically comprise the following steps that
Step A, by Heating Steel Ingots to 1150 ~ 1180 DEG C, after being incubated 2 ~ 5 hours, forging of coming out of the stove, make square billet；
Step B, the square billet of step A being again heated to 1230 ~ 1260 DEG C, after being incubated 16 ~ 25 hours, stove is cooled to 1050 DEG C, is incubated 2
~ 3 hours, after being then again heated to 1150 ~ 1180 DEG C of insulations 2 ~ 3 hours, forge finished product；
Step C, the steel ingot forged in step B being carried out blanking, carry out Quenching Treatment after blanking, temperature during quenching is
800-900 DEG C, the cold 2-3h of the laggard line space that quenches, the alloy that air cooling is good is put and places into insulation 3-5h, forging in 500 DEG C-550 DEG C
Finished product；
Step D, the finished product bar of step C forging is placed in annealing furnace it is heated to 730 ~ 780 DEG C, after being incubated 12 ~ 20 hours, stove
It is cooled to 500 DEG C, air cooling of coming out of the stove.
A kind of method reducing boracic heat-resistance stainless steel C type impurity the most according to claim 1, it is characterised in that: step
Forging process in rapid A is as follows: steel ingot is carried out alloy phase change process, is cooled fast to 800 by after the ingot annealing of good heat insulation
DEG C, then proceed to holding furnace is carried out phase transformation, then be warming up to uniform temperature and carry out Forge Heating.
A kind of method reducing boracic heat-resistance stainless steel C type impurity the most according to claim 1, it is characterised in that: step
During in rapid B, square billet reheats, add weight percentage be 2-3.5% electrolytic aluminium, weight percentage be 0.003-
0.008% ferronickel sufficiently stirs.
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| CN201610453520.7A CN106086351B (en) | 2016-06-22 | 2016-06-22 | A kind of method for reducing boracic heat-resistance stainless steel C type impurities |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724788A (en) * | 2009-12-18 | 2010-06-09 | 北京科技大学 | High-vanadium steel wear resistant material and preparation method thereof |
| CN102162066A (en) * | 2011-03-28 | 2011-08-24 | 徐英忱 | Medical martensitic stainless steel material and preparation method thereof |
| CN102527892A (en) * | 2011-12-31 | 2012-07-04 | 上海加宁新技术研究所 | Manufacturing method of martensitic stainless steel forged piece with high electric resistivity and high magnetic conductivity |
| CN102586550A (en) * | 2012-02-29 | 2012-07-18 | 重庆宗学重工机械股份有限公司 | Heat treatment method for stainless steel heat-resistant steel forging |
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2016
- 2016-06-22 CN CN201610453520.7A patent/CN106086351B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724788A (en) * | 2009-12-18 | 2010-06-09 | 北京科技大学 | High-vanadium steel wear resistant material and preparation method thereof |
| CN102162066A (en) * | 2011-03-28 | 2011-08-24 | 徐英忱 | Medical martensitic stainless steel material and preparation method thereof |
| CN102527892A (en) * | 2011-12-31 | 2012-07-04 | 上海加宁新技术研究所 | Manufacturing method of martensitic stainless steel forged piece with high electric resistivity and high magnetic conductivity |
| CN102586550A (en) * | 2012-02-29 | 2012-07-18 | 重庆宗学重工机械股份有限公司 | Heat treatment method for stainless steel heat-resistant steel forging |
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Address after: 621700 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Patentee after: Sichuan Liuhe Special Metal Materials Co., Ltd. Address before: 621700 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Patentee before: Sichuan Liuhe Forging Company Ltd. |