CN104593580B - Method for preventing annealing carburization of high-speed tool steel cold-drawn steel wire - Google Patents
Method for preventing annealing carburization of high-speed tool steel cold-drawn steel wire Download PDFInfo
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- CN104593580B CN104593580B CN201410813194.7A CN201410813194A CN104593580B CN 104593580 B CN104593580 B CN 104593580B CN 201410813194 A CN201410813194 A CN 201410813194A CN 104593580 B CN104593580 B CN 104593580B
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- 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
- C21D1/26—Methods of annealing
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention relates to a method for preventing annealing carburization of a high-speed tool steel cold-drawn steel wire. The method comprises the following steps: in a temperature rise period of an annealing process of a high-speed tool steel cold-drawn steel wire, heating the high-speed tool steel cold-drawn steel wire to obtain wire drawing powder, burning and decomposing the wire drawing powder to ensure that the temperature of the wire drawing powder is lower than the rapid oxidation temperature of the high-speed steel cold-drawn steel wire, and then annealing the high-speed tool steel cold-drawn steel wire after flue gas produced by burning and decomposing the wire drawing powder is discharged. According the technical scheme disclosed by the invention, the high-speed tool steel cold-drawn steel wire only needs to be directly fed into an annealing furnace, the wire drawing powder on the surface of the steel wire is heated to be burnt and decomposed before reaching the annealing temperature, and then the wire drawing powder is subjected to gas discharge and ignition treatment. The method disclosed by the invention is simple to operate, ensures that the cost can be saved and the production cycle can be shortened, and has practical application values.
Description
Technical field
The present invention relates to a kind of method for preventing wire annealing carburizing, more particularly to one kind prevents high-speed tool steel cold-drawn steel
The method of silk annealing carburizing.
Background technology
High-speed tool steel (cold-)drawn (steel)wire is drawn into steel wire, steel wire Jing full annealings again using high-speed tool steel gren rod Jing
Afterwards, one kind is delivered goods with vertical bar shape after aligning, scale；Another kind is not aligned with plate-like delivery.(cold-)drawn (steel)wire be
Process on cold-drawn machine, in cold drawing process, steel wire needs the lubricant of lubrication, drawing to be also referred to as " hot candied powder " typically in a mold
It is made up of carbon dust, soap powder, Adeps Bovis seu Bubali etc..It is cold drawn go out Steel Wire Surface adhere to the hot candied powder of these carbonaceous organic materials, with wire drawing
The steel wire of powder carries out carburizing atmosphere is produced in high annealing, stove in annealing furnace, causes case-carbonizing after wire annealing, carburizing steel
Silk not only easily ruptures in follow-up processing, and the cutter produced is scrapped.
In order to prevent steel wire carburizing, the cleaning to hot candied powder is typically combined using physical removal, chemical scavenging or both
Method.Physical removal method includes carrying out steel wire the process such as surface sand washing, scrub, polishing, such as generally adopts 3 wire wheels
Brush, is slightly brushed into 120 degree of distributions, then carries out smart throwing process by 3 groups of sized flap wheels, or thrown by high speed planet polishing machine
Optical processing；Chemical scavenging method includes the processing method that cleaning is successively combined with pickling, alkali cleaning or soda acid.So process to exist and increase
Processing sequence, the deficiency for extending manufacture cycle.
The content of the invention
To solve the deficiencies in the prior art, the invention provides a kind for the treatment of process is simple, production week can be shortened
The method for preventing the annealing carburizing of high-speed tool steel (cold-)drawn (steel)wire of phase.
For achieving the above object, the of the invention method for preventing the annealing carburizing of high-speed tool steel (cold-)drawn (steel)wire, is at a high speed
Temperature rise period in the annealing of tool steel (cold-)drawn (steel)wire, high-speed tool steel (cold-)drawn (steel)wire is heated to into hot candied powder combustion decomposition and less than height
The fast oxidative temperature of fast steel (cold-)drawn (steel)wire, after the flue gas that hot candied powder combustion decomposition is formed is released, carries out high-speed tool steel cold
Draw the annealing of steel wire.
Based on conventional hot candied powder by material compositions such as carbon dust, soap powder, Adeps Bovis seu Bubali, in the temperature-rise period of wire annealing, steel wire table
The hot candied powder in face can be initially heated burning and form flue gas, and control temperature makes hot candied powder obtain quick, sufficient combustion decomposition, then
The flue gas for being formed is discharged, the carburizing atmosphere that flue gas is formed in annealing pot is solved, so as to fundamentally solve steel wire table
The annealing carburizing problem that the hot candied powder in face causes, and control heating-up temperature can make the quick fully combustion decomposition of hot candied pruinescence,
The oxidation of high-speed tool steel (cold-)drawn (steel)wire can be also avoided, processing stage making this, does not affect follow-up wire annealing to process.Compare
In the mode of the hot candied powder of other process, high-speed tool steel drawn steel wire is processed using which, the cleaning through hot candied powder is not required to
Production line, directly can process in annealing furnace, anneal, and the processing method shortens the production cycle, saved production cost, and
And operation is simple, it is easy to application, fundamentally solves the problems, such as the annealing carburizing that hot candied powder causes.
Used as the restriction to aforesaid way, described hot candied powder combustion decomposition temperature is 650～750 DEG C.
650～750 DEG C are selected, insulation makes hot candied powder heated combustion form flue gas, and on the one hand hot candied powder fires at this temperature
Burn and decompose fast, the time used by the reduction hot candied powder removal stage, whole time production cycle can be shortened；On the other hand in this temperature
Under, high-speed tool steel steel wire is not up to Quick Oxidation temperature, and the discharging operation of flue gas does not interfere with Steel Wire Surface and is oxidized；Again
On the one hand steel wire can be preheated at this temperature, improve steel wire high-temperature heating speed, carrying out rapidly beneficial to subsequent anneal.
Used as the restriction to aforesaid way, the method for preventing the annealing carburizing of high-speed tool steel (cold-)drawn (steel)wire includes following
Step：
In a, the annealing pot being directly attached to the high-speed tool steel drawn steel wire after cold-drawn in well formula electricity annealing furnace, cover and move back
Cupping jar lid, after being heated to hot candied powder combustion decomposition temperature, insulation makes hot candied powder burn to form flue gas；
B, the flue gas that the air vent opening on annealing pot lid, the hot candied powder combustion decomposition of releasing are formed, and flue gas is lighted,
Until when flue gas flare extinguishes, the air vent on annealing pot lid being sealed, annealing furnace outer housing is covered；
C, continuation heat up, are incubated, slow cooling, complete annealing process.
In concrete processing procedure, flue gas is released by opening the air vent on annealing pot lid, and flue gas is lighted, prevented
Carburizing atmosphere is only formed, is treated that flue gas flare extinguishes, the air vent on annealing pot lid is sealed, annealing furnace outer housing, Ran Houji is covered
Temperature of continuing rising carries out subsequent anneal process.
Used as the restriction to aforesaid way, in step a, temperature retention time is 1 ~ 2h.
The hot candied powder combustion decomposition time is relevant with batch and charging mode, and batch is little or holds time during using bin
It is short；Conversely, length of holding time, general temperature retention time is 1～2 hour.
As the restriction to aforesaid way, the air vent on annealing pot lid is adopted into fire resisting asbestos seal in step b
And seal groove interior sealing at annealing cover and annealing tank mouth is placed on using dry cement.
Used as the restriction to aforesaid way, step c is warming up to 850～860 DEG C, is incubated 3 ~ 4h, and steel wire completes tissue
Transformation, is cooled to≤500 DEG C with slow cooling speed≤30 DEG C/h, and annealing pot is come out of the stove into burial pit.
Hot candied powder is carried out the annealing of high-speed tool steel drawn steel wire by setting technological operation after removing.
In sum, using technical scheme preventing the annealing carburizing of high-speed tool steel drawn steel wire, it is not required to
The cleaning for carrying out Steel Wire Surface drawing powder is processed, and is directly loaded high-speed tool steel drawn steel wire in annealing furnace, is being reached annealing
Carrying out heating before temperature to the hot candied powder of Steel Wire Surface makes its combustion decomposition, then flue gas deflation is lighted process, simple to operate, no
It is only cost-effective, and shorten the production cycle, with actual application value, fundamentally solve the annealing that hot candied powder causes and ooze
Carbon problem.
Description of the drawings
Below in conjunction with the accompanying drawings and specific embodiment to the present invention further describe in detail：
Fig. 1：High-speed tool steel cold drawn wire annealing furnace structure schematic diagram；
Fig. 2：Prevent the process curve of high-speed tool steel cold drawn wire annealing carburizing；
In Fig. 1：1st, air vent；2nd, annealing cover；3rd, annealing furnace outer housing；4th, annealing pot；5th, annealing body of heater；
In Fig. 2：T1, hot candied powder ignition temperature；T2, annealing temperature；T1, hot candied powder burning time；When t2, annealing insulation
Between.
Specific embodiment
High-speed tool steel cold drawn wire is removed into hot candied powder and annealing in well formula electricity annealing furnace.Such as Fig. 1 institutes
Show, the well formula electricity annealing furnace includes internally positioned annealing pot 4, annealing cover 2 and externally-located annealing body of heater 5, annealing furnace
Outer housing 3, has air vent 1 on annealing cover 2.
Embodiment one
The present embodiment is related to the operating process for preventing high-speed tool steel (cold-)drawn (steel)wire from annealing carburizing, with reference to shown in Fig. 2
Prevent the process curve of high-speed tool steel cold drawn wire annealing carburizing, concrete operations from comprising the following steps：
In a, the annealing pot 4 high-speed tool steel (cold-)drawn (steel)wire being encased in well formula electricity annealing body of heater 5, cover annealing cover
2, hot candied powder ignition temperature T1 is warming up to, temperature retention time t1 makes hot candied powder heated combustion form flue gas completely；
B, the air vent 1 on annealing pot lid is opened, release hot candied powder and burn the flue gas to be formed, and flue gas is lighted, directly
To flue gas flare extinguish, by the air vent 1 on annealing pot lid using fire resisting asbestos seal and using dry cement be placed on annealing cover 2
With seal groove interior sealing at annealing tank mouth, annealing furnace outer housing 3 is covered；
C, annealing temperature T2 is continuously heating to, temperature retention time t2 carries out the structural transformation of steel wire, with slow cooling speed≤30
DEG C/h is cooled to≤500 DEG C, annealing pot is come out of the stove into burial pit, completes annealing operation.
Embodiment two
The present embodiment is related to different high-speed tool steel steel wires in the operating parameter for preventing from annealing in carburization step and obtains
Product result, shown in table specific as follows：
The wire annealing Hardness Control of three groups of embodiment process meets state's scale value≤255HB in≤239HB as shown above
Requirement, dissipate bundle, either physically or chemically clean compared to conventional cold drawn wire, it is 24 ~ 36h to commonly use the annealing operation cycle,
The method substantially reduces the production cycle, reduces operation sequence, cost-effective.
Claims (5)
1. it is a kind of prevent high-speed tool steel (cold-)drawn (steel)wire anneal carburizing method, it is characterised in that：In high-speed tool steel cold-drawn steel
Temperature rise period in silk annealing, high-speed tool steel (cold-)drawn (steel)wire is heated to into hot candied powder combustion decomposition and less than high-speed steel (cold-)drawn (steel)wire
Fast oxidative temperature, after the flue gas that hot candied powder combustion decomposition is formed is released, carries out the annealing of high-speed tool steel (cold-)drawn (steel)wire；
Described the method is comprised the following steps：
In a, the annealing pot high-speed tool steel drawn steel wire after cold-drawn being directly attached in well formula electricity annealing furnace, cover annealing pot
Lid, after being heated to hot candied powder combustion decomposition temperature, insulation makes hot candied powder fully burn to form flue gas；
B, the flue gas that the air vent opening on annealing pot lid, the hot candied powder combustion decomposition of releasing are formed, and flue gas is lighted, until
When flue gas flare extinguishes, the air vent on annealing pot lid is sealed, annealing furnace outer housing is covered；
C, continuation heat up, are incubated, slow cooling, complete annealing process.
2. according to claim 1 prevent high-speed tool steel (cold-)drawn (steel)wire anneal carburizing method, it is characterised in that：Institute
The hot candied powder combustion decomposition temperature stated is 650～750 DEG C.
3. according to claim 1 prevent high-speed tool steel (cold-)drawn (steel)wire anneal carburizing method, it is characterised in that：Step
In rapid a, temperature retention time is 1 ~ 2h.
4. it is according to claim 1 prevent high-speed tool steel (cold-)drawn (steel)wire anneal carburizing method, it is characterised in that：Step
In b by the air vent on annealing pot lid using fire resisting asbestos seal and using dry cement be placed on annealing cover with annealing tank mouth at
Seal groove interior sealing.
5. according to claim 1 prevent high-speed tool steel (cold-)drawn (steel)wire anneal carburizing method, it is characterised in that：Step
Rapid c is warming up to 850～860 DEG C, is incubated 3 ~ 4h, and steel wire completes structural transformation, is cooled to≤500 with slow cooling speed≤30 DEG C/h
DEG C, annealing pot is come out of the stove into burial pit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410813194.7A CN104593580B (en) | 2014-12-24 | 2014-12-24 | Method for preventing annealing carburization of high-speed tool steel cold-drawn steel wire |
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| CN201410813194.7A CN104593580B (en) | 2014-12-24 | 2014-12-24 | Method for preventing annealing carburization of high-speed tool steel cold-drawn steel wire |
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| CN104593580A CN104593580A (en) | 2015-05-06 |
| CN104593580B true CN104593580B (en) | 2017-05-03 |
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| CN112080627A (en) * | 2020-07-18 | 2020-12-15 | 凯明(常州)新材料科技有限公司 | Recrystallization annealing process of GCr15 bearing steel wire well type annealing furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205590A (en) * | 2006-12-20 | 2008-06-25 | 宝山钢铁股份有限公司 | Annealing method for high-speed steel cold-drawing wire products |
| CN101992221A (en) * | 2009-08-14 | 2011-03-30 | 江苏宏泰不锈钢丝绳有限公司 | Stainless steel wire on-line coating and drawing production process |
| CN102755992A (en) * | 2012-07-30 | 2012-10-31 | 武汉钢铁(集团)公司 | Production method of cold-rolled steel strip for flux cored wire |
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- 2014-12-24 CN CN201410813194.7A patent/CN104593580B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205590A (en) * | 2006-12-20 | 2008-06-25 | 宝山钢铁股份有限公司 | Annealing method for high-speed steel cold-drawing wire products |
| CN101992221A (en) * | 2009-08-14 | 2011-03-30 | 江苏宏泰不锈钢丝绳有限公司 | Stainless steel wire on-line coating and drawing production process |
| CN102755992A (en) * | 2012-07-30 | 2012-10-31 | 武汉钢铁(集团)公司 | Production method of cold-rolled steel strip for flux cored wire |
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