CN109457085A - A kind of heat treatment process of mooring cable - Google Patents
A kind of heat treatment process of mooring cable Download PDFInfo
- Publication number
- CN109457085A CN109457085A CN201811498633.4A CN201811498633A CN109457085A CN 109457085 A CN109457085 A CN 109457085A CN 201811498633 A CN201811498633 A CN 201811498633A CN 109457085 A CN109457085 A CN 109457085A
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- temperature
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- furnace
- mooring cable
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004321 preservation Methods 0.000 claims abstract description 24
- 238000005496 tempering Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000630 rising effect Effects 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 5
- 238000011017 operating method Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0087—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for chains, for chain links
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- Chemical & Material Sciences (AREA)
- 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
A kind of heat treatment process of mooring cable, it is characterised in that: including following operating procedure: step 1, quenching, after chain enters glowing furnace, carrying out preheating to chain link using the furnace gas of rising by preheating zone first makes its temperature reach 300-500 DEG C；Subsequently into quick heating zone, temperature is promoted to 980-1020 DEG C or more, heat preservation zone is entered back into and carries out samming, finally glowing furnace out, water cooling；Step 2, tempering, after chain enters tempering furnace, is heated to 300 DEG C or so by preheating zone first；Subsequently into heating zone, temperature is promoted to 590-650 DEG C or so；Temperature is increased to 650-720 DEG C and heated again by first area after chain crosses guide wheel；It enters back into heat preservation zone and carries out samming, finally tempering furnace out, water cooling.The big specification mooring cable that heat treatment process of the invention is 147mm-230mm mainly for diameter, method is simple, heating, heat preservation, the setting of cooling time and temperature make the temperature of surface and center portion be attained by defined value, good cooling results, ensure the complete through hardening of mooring cable, thermal effectiveness is guaranteed.
Description
Technical field
The present invention relates to the big specification mooring cables that the field of mooring cable more particularly to a kind of diameter are 147mm-230mm
Heat treatment process.
Background technique
With the development of ocean development and marine worker industry, to mooring cable, more stringent requirements are proposed in market.Existing two is big
Trend, first is that high intensity, second is that big normalization.The former mainly passes through the raising strength of materials and achievees the purpose that proof strength,
And the latter is then to realize intensity requirement by increasing specification.And it is heat-treated one of the critical process manufactured as mooring cable,
Effect has vital influence for the performance of final products.Therefore big rule must be controlled by reasonable heat treatment process
The weld seam of lattice mooring cable chain link and the intensity of base material, make it meet the code requirement of classification society, and it is raw to can be realized high-volume
It produces.
With the increasing of specification, changes will occur with cooling procedure for mooring cable heating.When heated, when needing longer
Between so that the temperature of surface and center portion is attained by defined value, be otherwise easy to appear surface and center portion excessive temperature differentials or phase transformation
Incomplete situation.And in cooling procedure, the increase of size will affect cooling effect, be easy to appear partial region quench it is impermeable
Phenomenon.Thus, it is ensured that the thermal effectiveness of big specification mooring cable, other than improving to material, first is that carry out not
The matched heat treatment test of same parameter, to obtain the parameter optimized；Second is that Equipment for Heating Processing is improved, from control precision and surely
Qualitative aspect ensures technique, while in process of production, monitor closely heat treatment parameter and process guarantee product matter
Amount.
Summary of the invention
It is simple to operate it is an object of the present invention to provide a kind of heat treatment method of mooring cable, it is able to satisfy big specification mooring
Chain combination of strength and toughness solves the above technical problem.
In order to achieve the above technical purposes, reach above-mentioned technical requirements, the technical scheme adopted by the invention is that: it is a kind of
The heat treatment process of mooring cable, it is characterised in that: including following operating procedure: step 1, quenching, after chain enters glowing furnace,
Carrying out preheating to chain link using the furnace gas of rising by preheating zone first makes its temperature reach 300-500 DEG C；Subsequently into quick
Heating zone promotes temperature to 980-1020 DEG C or more, enters back into heat preservation zone and carries out samming, finally glowing furnace out, water cooling；Step
Two, tempering after chain enters tempering furnace, is heated to 300 DEG C or so by preheating zone first；Subsequently into heating zone, by temperature
Promote 590-650 DEG C or so；Temperature is increased to 650-720 DEG C and heated again by first area after chain crosses guide wheel；Again
Samming is carried out into heat preservation zone, finally tempering furnace out, water cooling.
Preferred: the temperature setting of samming is 940-980 DEG C in the step one, and equal temperature time is set as 180-
250min, the speed of service of chain are 0.10-0.15m/min.
Preferred: the temperature setting of samming is 590-650 DEG C in the step two, and equal temperature time is set as 180-
250min, the speed of service of chain are 0.10-0.15m/min.
Beneficial effects of the present invention；A kind of heat treatment process of mooring cable is the big of 147mm-230mm mainly for diameter
Specification mooring cable, hardening heat improves 30 DEG C or so than general hardening heat in the heat treatment process, but chain speed significantly reduces
To guarantee sufficient soaking time, the conversion of austenite is sufficiently realized, while guaranteeing that cooling velocity meets quenching and requires；Tempering temperature
Degree can be finely adjusted according to specific material, mainly realize expected material by the speed of service of control chain for big specification
Expect the transformation of interior tissue, increasing tempering time can be such that alloying element sufficiently dissolves to improve the comprehensive performance of chain；This
The heat-treatment technology method of invention is simple, and heating, heat preservation, the setting of cooling time and temperature make the temperature of surface and center portion all
Defined value, good cooling results can be reached, it is ensured that the complete through hardening of mooring cable, thermal effectiveness are guaranteed.
Detailed description of the invention
Fig. 1 is present invention heat treatment schematic diagram；
In figure: 1. chains；2. glowing furnace；3. preheating zone a；4. heating zone a；5. heat preservation zone a；6. tempering furnace；7. preheating zone b；
8. heating zone b；9. heat preservation zone b；10. guide wheel.
Specific embodiment
In order to be more clear goal of the invention of the invention, technical solution and its advantageous effects, below in conjunction with attached drawing
And specific embodiment, the present invention will be described in further detail；
In the accompanying drawings: a kind of heat treatment process of mooring cable, it is characterised in that: including following operating procedure: step 1, quenching,
After chain 1 enters glowing furnace 2, carrying out preheating to chain link using the furnace gas of rising by preheating zone a3 first reaches its temperature
300-500℃；Subsequently into quick heating zone a4, temperature is promoted to 980-1020 DEG C, heat preservation zone a5 is entered back into and carries out samming,
Finally go out glowing furnace 2, water cooling；Step 2, tempering are heated to 300 by preheating zone b7 first after chain 1 enters tempering furnace 6
℃；Subsequently into heating zone b8, temperature is promoted to 590-650 DEG C；First area after chain 1 crosses guide wheel 10 proposes temperature
Height heats again to 650-720 DEG C；It enters back into heat preservation zone b9 and carries out samming, finally tempering furnace 6 out, water cooling.
The temperature setting of samming is 940-980 DEG C in the step one, and equal temperature time is set as 180-250min, chain
1 speed of service is 0.10-0.15m/min；The temperature setting of samming is 590-650 DEG C in the step two, equal temperature time
It is set as 180-250min, the speed of service of chain 1 is 0.10-0.15m/min.
Specific implementation of the invention:
Case 1
Enter chain 1 from the entrance of glowing furnace 2, successively by preheating zone a3, heating zone a4, heat preservation zone a5；The operation of chain 1
Speed is disposed as 0.10m/min；Preheating zone a3, which carries out preheating to chain link 1 using the furnace gas of rising, makes its temperature reach 500 DEG C；
It subsequently into quick heating zone a4, is promoted to temperature to 1020 DEG C, carries out samming for a period of time subsequently into heat preservation zone a5, heat preservation
Temperature setting is 940 DEG C, and soaking time is set as 180min；Heat preservation terminates to be cooled down；
Then chain 1 after cooling will be quenched and enter tempering furnace 6, successively pass through the preheating zone b7 of tempering furnace, heating zone b8 and guarantor
Warm area b9；The speed of service of chain 1 is disposed as 0.10m/min；Chain 1 is heated to 300 DEG C by preheating zone b7；Subsequently into
Heating zone b8 promotes temperature to 590 DEG C；First area after chain crosses the guide wheel 10 of glowing furnace, temperature will be warm after falling after rise
Degree is improved to 650 DEG C and is heated again；Samming is carried out for a period of time subsequently into heat preservation zone b9, and holding temperature is set as 590 DEG C, protects
The warm time is set as 180min；Heat preservation terminates to be cooled down.
The conclusion obtained: through practice measurement chain, finally obtained metallographic structure is mainly tempered after above-mentioned modifier treatment
Sorbite, surface hardness and sample position (r/3) hardness difference are no more than 15%.
Case 2
Enter chain 1 from the entrance of glowing furnace 2, successively by preheating zone a3, heating zone a4, heat preservation zone a5；The operation of chain 1
Speed is disposed as 0.15m/min；Preheating zone a3, which carries out preheating to chain link 1 using the furnace gas of rising, makes its temperature reach 300 DEG C；
It subsequently into quick heating zone a4, is promoted to temperature to 980 DEG C, carries out samming for a period of time subsequently into heat preservation zone a5, heat preservation
Temperature setting is 980 DEG C, and soaking time is set as 250min；Heat preservation terminates to be cooled down；
Then chain 1 after cooling will be quenched and enter tempering furnace 6, successively pass through the preheating zone b7 of tempering furnace, heating zone b8 and guarantor
Warm area b9；The speed of service of chain 1 is disposed as 0.15m/min；Chain 1 is heated to 300 DEG C by preheating zone b7；Subsequently into
Heating zone b8 promotes temperature to 650 DEG C；First area after chain crosses the guide wheel 10 of glowing furnace, temperature will be warm after falling after rise
Degree is improved to 720 DEG C and is heated again；Samming is carried out for a period of time subsequently into heat preservation zone b9, and holding temperature is set as 650 DEG C, protects
The warm time is set as 250min；Heat preservation terminates to be cooled down.
It concludes that and is mainly tempered rope through the finally obtained metallographic structure after above-mentioned modifier treatment of practice measurement chain
Family name's body, surface hardness and sample position (r/3) hardness difference are no more than 15%.
Above-described embodiment is only intended to clearly illustrate description made by the present invention, and does not limit the embodiments,
To those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
Dynamic, there is no necessity and possibility to exhaust all the enbodiments, and the obvious variation or change thus amplified out
It is dynamic to be still in the protection scope of this invention.
Claims (3)
1. a kind of heat treatment process of mooring cable, it is characterised in that: including following operating procedure: step 1, quenching, chain (1)
Into after glowing furnace (2), carrying out preheating to chain link using the furnace gas of rising by preheating zone a(3) first reaches its temperature
300-500℃；Subsequently into quick heating zone a(4), temperature is promoted to 980-1020 DEG C, heat preservation zone a(5 is entered back into) carry out
Samming, finally glowing furnace (2) out, water cooling；Step 2, tempering after chain (1) enters tempering furnace (6), pass through preheating zone b first
(7) 300 DEG C are heated to；Subsequently into heating zone b(8), temperature is promoted to 590-650 DEG C；After chain (1) crosses guide wheel (10)
First area temperature be increased to 650-720 DEG C heat again；Enter back into heat preservation zone b(9) samming is carried out, last tempering furnace out
(6), water cooling.
2. a kind of heat treatment process of mooring cable according to claim 1, it is characterised in that: samming in the step one
Temperature setting be 940-980 DEG C, equal temperature time is set as 180-250min, and the speed of service of chain (1) is 0.10-0.15m/
min。
3. a kind of heat treatment process of mooring cable according to claim 1, it is characterised in that: samming in the step two
Temperature setting be 590-650 DEG C, equal temperature time is set as 180-250min, and the speed of service of chain (1) is 0.10-0.15m/
min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811498633.4A CN109457085A (en) | 2018-12-08 | 2018-12-08 | A kind of heat treatment process of mooring cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811498633.4A CN109457085A (en) | 2018-12-08 | 2018-12-08 | A kind of heat treatment process of mooring cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109457085A true CN109457085A (en) | 2019-03-12 |
Family
ID=65612774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811498633.4A Pending CN109457085A (en) | 2018-12-08 | 2018-12-08 | A kind of heat treatment process of mooring cable |
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| Country | Link |
|---|---|
| CN (1) | CN109457085A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112680573A (en) * | 2020-12-07 | 2021-04-20 | 天津市富星达链条有限公司 | Chain forming processing method |
| CN113637834A (en) * | 2021-08-13 | 2021-11-12 | 北京华海基业机械设备有限公司 | Heat treatment mode of chain |
| CN119177332A (en) * | 2024-11-14 | 2024-12-24 | 中运锚链(江苏)有限公司 | Heat treatment equipment for mooring chain |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920010228B1 (en) * | 1990-06-30 | 1992-11-21 | 기아특수강 주식회사 | Making process for mooring chain steel having a good weldabilty |
| CN1202533A (en) * | 1998-04-17 | 1998-12-23 | 莱芜钢铁总厂 | High strength high toughness steel for mooring chain and production method of mooring chain |
| CN102453841A (en) * | 2010-10-22 | 2012-05-16 | 江阴兴澄特种钢铁有限公司 | Steel used for sea oil extraction platform R4S grade mooring chain and its manufacture method |
| CN103114255A (en) * | 2011-11-17 | 2013-05-22 | 江苏亚星锚链股份有限公司 | Prescription of R5-level mooring chain and heat treatment process |
| CN105624566A (en) * | 2016-01-05 | 2016-06-01 | 江阴兴澄特种钢铁有限公司 | R5 grade mooring chain steel with high strength and low heat treatment sensitivity and manufacturing method of R5 grade mooring chain steel |
| CN105886710A (en) * | 2016-05-30 | 2016-08-24 | 江苏亚星锚链股份有限公司 | Heat treatment technology for R6 level mooring cable |
-
2018
- 2018-12-08 CN CN201811498633.4A patent/CN109457085A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920010228B1 (en) * | 1990-06-30 | 1992-11-21 | 기아특수강 주식회사 | Making process for mooring chain steel having a good weldabilty |
| CN1202533A (en) * | 1998-04-17 | 1998-12-23 | 莱芜钢铁总厂 | High strength high toughness steel for mooring chain and production method of mooring chain |
| CN102453841A (en) * | 2010-10-22 | 2012-05-16 | 江阴兴澄特种钢铁有限公司 | Steel used for sea oil extraction platform R4S grade mooring chain and its manufacture method |
| CN103114255A (en) * | 2011-11-17 | 2013-05-22 | 江苏亚星锚链股份有限公司 | Prescription of R5-level mooring chain and heat treatment process |
| CN105624566A (en) * | 2016-01-05 | 2016-06-01 | 江阴兴澄特种钢铁有限公司 | R5 grade mooring chain steel with high strength and low heat treatment sensitivity and manufacturing method of R5 grade mooring chain steel |
| CN105886710A (en) * | 2016-05-30 | 2016-08-24 | 江苏亚星锚链股份有限公司 | Heat treatment technology for R6 level mooring cable |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112680573A (en) * | 2020-12-07 | 2021-04-20 | 天津市富星达链条有限公司 | Chain forming processing method |
| CN113637834A (en) * | 2021-08-13 | 2021-11-12 | 北京华海基业机械设备有限公司 | Heat treatment mode of chain |
| CN119177332A (en) * | 2024-11-14 | 2024-12-24 | 中运锚链(江苏)有限公司 | Heat treatment equipment for mooring chain |
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Application publication date: 20190312 |
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