CN103334000A - Heat-treatment quenching method for mining ring chain - Google Patents
Heat-treatment quenching method for mining ring chain Download PDFInfo
- Publication number
- CN103334000A CN103334000A CN2013102522270A CN201310252227A CN103334000A CN 103334000 A CN103334000 A CN 103334000A CN 2013102522270 A CN2013102522270 A CN 2013102522270A CN 201310252227 A CN201310252227 A CN 201310252227A CN 103334000 A CN103334000 A CN 103334000A
- Authority
- CN
- China
- Prior art keywords
- quenching
- intermediate frequency
- heat
- round
- red copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a heat-treatment quenching method for a mining ring chain. The heat-treatment quenching method is characterized in that for the mining ring chain, the adopted steel is high-alloy chain steel in the series of manganese, nickel, chromium and molybdenum, the requirements for hardness and toughness are high, the heat-treatment quenching difficulty is large, methods of intermediate-frequency induction coil quenching, high-temperature tempering, sub-temperature quenching and low-temperature quenching are adopted for heat treatment of the ring chain, wherein an induction coil is a red-copper hollow pipe, is spring-shaped, and is used for water-circulating cooling; the intermediate-frequency voltage is 700V, and the intermediate frequency is 3KHZ; after being treated by intermediate-frequency quenching, high-temperature tempering, sub-temperature quenching and low-temperature tempering, the hardness of the ring chain reaches HRC42-45, and the strength of the ring chain reaches 1128KN, the compactness of the internal metallographic structure is good, so that the heat-treatment quenching method is a very-ideal heat-treatment quenching method for the mining ring chain.
Description
Technical field
The present invention relates to a kind of heat-treatment quenching method of circle chain of mine, belong to the technical field of the technology manufacturing of coal mine equipment component.
Background technology
Along with the development of mechanical coal mining technology, mine flight conveyer, elevating conveyor etc. are large-scale, heavy equipment has obtained using widely, and it is round-link chain that these equipment use maximum kernel components; At present, the metallic substance that round-link chain uses is the high alloy circular chain steel of manganese nickel chromium triangle molybdenum series, diameter is big, the moulding difficulty, this steel hardness height, toughness is strong, difficulty of processing is big, because round-link chain is rectangular ring, the normal employing welded, the machined form moulding is example with Φ 26 round-link chains, and the round-link chain monocycle length after the moulding is 92mm, inner ring width is 30mm, outer ring width is 86 mm, and its hardness reaches HRC42-45, and to quench be very difficult to the part of high rigidity like this, salt stove with routine quenches, high-frequency quenching is difficult to reach the hardness of round-link chain, requirement of strength makes the key problem in technology that has been heat-treated to of round-link chain.
Summary of the invention
Goal of the invention
The objective of the invention is the situation at background technology, adopt a kind of new heat-treatment quenching method, the design ruhmkorff coil, round-link chain is placed in the ruhmkorff coil, adopt the method for mid-frequency induction hardening+high tempering+intercritical hardening+low-temperaturetempering to handle, with hardness and the intensity that increases substantially round-link chain.
Technical scheme
The equipment that the round-link chain heat-treatment quenching uses is: the intermediate frequency heat-treatment quenching machine, and the frock of using is red copper open tube ruhmkorff coil;
(1), preparation quenching ruhmkorff coil
Quenching ruhmkorff coil material is the red copper open tube, with machinery the red copper open tube is coiled into spring shape, and water intaking valve at one end is set, and sets out water valve at the other end;
Quench with red copper open tube length 8000 mm, outside diameter Φ 20 mm, diameter of bore Φ 16 mm;
The coiling back becomes: entire length 2000 mm, outside diameter Φ 140 mm, interior circular diameter Φ 100mm;
(2), preparation tempering ruhmkorff coil
Tempering ruhmkorff coil material is the red copper open tube, with machinery the red copper open tube is coiled into spring shape, and water intaking valve at one end is set, and sets out water valve at the other end;
Tempering red copper open tube length 4000 mm, outside diameter Φ 20 mm, diameter of bore Φ 16 mm;
The coiling back becomes: entire length 1000mm, outside diameter Φ 140 mm, diameter of bore Φ 100 mm;
(3), intermediate frequency heat-treatment quenching
1., the quenching ruhmkorff coil is placed on the intermediate frequency heat-treating machine worktable, water inlet pipe is inserted on the red copper open tube water intaking valve, rising pipe is inserted on the red copper open tube outlet valve;
2., open red copper open tube water intaking valve, outlet valve, carry out the water cycle cooling;
3., open the intermediate frequency heat-treating machine, carry out quench treatment, voltage of intermediate frequency 700V, IF-FRE 3KH
zIntermediate frequency power 250KW, 930-1030 ℃ of medium frequency quenching temperature, medium frequency quenching time 150S;
(4) intermediate frequency thermal treatment high tempering
1., the tempering ruhmkorff coil is placed on the intermediate frequency heat-treating machine worktable, water inlet pipe is inserted on the red copper open tube water intaking valve, rising pipe is inserted on the red copper open tube outlet valve;
2., open red copper open tube water intaking valve, outlet valve, carry out the water cycle cooling;
3., open the intermediate frequency heat-treating machine, carry out high tempering and handle voltage of intermediate frequency 650 V, IF-FRE 3 KH
ZIntermediate frequency power 150KW, 500-550 ℃ of intermediate frequency high tempering temperature, intermediate frequency high tempering time 75S;
(5) intermediate frequency thermal treatment intercritical hardening
Intercritical hardening uses same quenching coil on same medium frequency quenching machine, voltage of intermediate frequency 700 V, IF-FRE 3 KH
Z, intermediate frequency power 210KW, 500-550 ℃ of intercritical hardening temperature, intercritical hardening time 120S;
(6) intermediate frequency thermal treatment low-temperaturetempering
Low-temperaturetempering is used same tempering coil on same medium frequency quenching machine, voltage of intermediate frequency 650 V, IF-FRE 3 KH
Z, intermediate frequency power 120KW, low-temperaturetempering time 60S;
(7) cooling
Round-link chain after medium frequency quenching, high tempering, intercritical hardening, the low-temperaturetempering is placed on the cooling frame, in air, naturally cool to 25 ℃;
(8) polishing sanding cleaning round-link chain surface
Cooled round-link chain with 400 order sand paperings, sanding, is cleared up the round-link chain surface, make its cleaning;
(9) detect, analyze, characterize
Round-link chain after medium frequency quenching, the tempering is detected, analyzes, characterizes;
Carrying out surface hardness with the HRC-150 Rockwell hardometer detects;
Carry out metallurgical analysis with 100 metaloscopes;
Conclusion: the round-link chain hardness through medium frequency quenching, high tempering, intercritical hardening, low-temperaturetempering reaches HRC 42-45, and intensity reaches 1128KN, and inside metallographic compactness is good.
Beneficial effect
The present invention compares with background technology has tangible advance, be that the steel that adopt at circle chain of mine are manganese, nickel, chromium, the high alloy circular chain steel of molybdenum series, hardness, the toughness reguirements height, the heat-treatment quenching difficulty is big, adopt the quenching of Medium frequency induction coil and tempering that round-link chain is heat-treated, ruhmkorff coil is the red copper open tube, be spring-like, and carry out water cycle and cool off, through medium frequency quenching, high tempering, intercritical hardening, the round-link chain hardness of low-temperaturetempering reaches HRC42-45, intensity reaches 1128KN, and inside metallographic compactness is good, is the heat-treatment quenching method of very good round-link chain.
Description of drawings
Fig. 1, round-link chain structure iron
The A-A sectional view of Fig. 2, Fig. 1
Fig. 3, the state graph of round-link chain mid-frequency induction hardening
Fig. 4, round-link chain square section metallographic structure figure
Shown in the figure, list of numerals is as follows:
1, round-link chain, 2, go up straight-arm portion, 3, left shoulder, 4, right shoulder, 5, internal ring portion, 6, the copper tube ruhmkorff coil, 7, water intaking valve, 8, outlet valve, 9, left magnetic field induction line, 10, right magnetic field induction line, 11, straight-arm portion down.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing:
Shown in Fig. 1,2, be the round-link chain structure iron, round-link chain 1 is oblate cuboid, be internal ring portion 5 in the middle of the round-link chain 1, and internal ring portion 5 peripheries are formed rectangular ring by last straight-arm portion 2, time straight-arm portion 11, left shoulder 3, right shoulder 4, and round-link chain 1 is made by cylindrical chain.
Shown in Figure 3, be the state graph of round-link chain mid-frequency induction hardening, worktable at the medium frequency quenching machine is put copper tube ruhmkorff coil 6, and an end of copper tube ruhmkorff coil 6 is that water intaking valve 7, the other end are outlet valve 8, and round-link chain 1 is put in the mid-way in the copper tube ruhmkorff coil 6; Water intaking valve 7 and external water inlet pipe UNICOM, outlet valve 8 and external rising pipe UNICOM are opened water intaking valve 7, outlet valve 8 during quenching, and the water that flows cools off copper tube ruhmkorff coil 6;
Copper tube ruhmkorff coil 6 is connected with power supply with the medium frequency quenching machine, during medium frequency quenching at voltage of intermediate frequency 700V, IF-FRE 3KH
ZProduce left magnetic field induction line 9, right magnetic field induction line 10 under the state.
Shown in Figure 4, be round-link chain square section metallographic structure figure, metallographic structure uniform crystal particles after round-link chain quenches, compactness is good.
Claims (2)
1. the heat-treatment quenching method of a circle chain of mine is characterized in that: the equipment that the round-link chain heat-treatment quenching uses is: the intermediate frequency heat-treatment quenching machine, and the frock of using is red copper open tube ruhmkorff coil;
(1), preparation quenching ruhmkorff coil
Quenching ruhmkorff coil material is the red copper open tube, with machinery the red copper open tube is coiled into spring shape, and water intaking valve at one end is set, and sets out water valve at the other end;
Quench with red copper open tube length 8000 mm, outside diameter Φ 20 mm, diameter of bore Φ 16 mm;
The coiling back becomes: entire length 2000 mm, outside diameter Φ 140 mm, interior circular diameter Φ 100mm;
(2), preparation tempering ruhmkorff coil
Tempering ruhmkorff coil material is the red copper open tube, with machinery the red copper open tube is coiled into spring shape, and water intaking valve at one end is set, and sets out water valve at the other end;
Tempering red copper open tube length 4000 mm, outside diameter Φ 20 mm, diameter of bore Φ 16 mm;
The coiling back becomes: entire length 1000mm, outside diameter Φ 140 mm, diameter of bore Φ 100 mm;
(3), intermediate frequency heat-treatment quenching
1., the quenching ruhmkorff coil is placed on the intermediate frequency heat-treating machine worktable, water inlet pipe is inserted on the red copper open tube water intaking valve, rising pipe is inserted on the red copper open tube outlet valve;
2., open red copper open tube water intaking valve, outlet valve, carry out the water cycle cooling;
3., open the intermediate frequency heat-treating machine, carry out quench treatment, voltage of intermediate frequency 700V, IF-FRE 3KH
zIntermediate frequency power 250KW, 930-1030 ℃ of medium frequency quenching temperature, medium frequency quenching time 150S;
(4) intermediate frequency thermal treatment high tempering
1., the tempering ruhmkorff coil is placed on the intermediate frequency heat-treating machine worktable, water inlet pipe is inserted on the red copper open tube water intaking valve, rising pipe is inserted on the red copper open tube outlet valve;
2., open red copper open tube water intaking valve, outlet valve, carry out the water cycle cooling;
3., open the intermediate frequency heat-treating machine, carry out high tempering and handle voltage of intermediate frequency 650 V, IF-FRE 3 KH
ZIntermediate frequency power 150KW, 500-550 ℃ of intermediate frequency high tempering temperature, intermediate frequency high tempering time 75S;
(5) intermediate frequency thermal treatment intercritical hardening
Intercritical hardening uses same quenching coil on same medium frequency quenching machine, voltage of intermediate frequency 700 V, IF-FRE 3 KH
Z, intermediate frequency power 210KW, 500-550 ℃ of intercritical hardening temperature, intercritical hardening time 120S;
(6) intermediate frequency thermal treatment low-temperaturetempering
Low-temperaturetempering is used same tempering coil on same medium frequency quenching machine, voltage of intermediate frequency 650 V, IF-FRE 3 KH
Z, intermediate frequency power 120KW, low-temperaturetempering time 60S;
(7) cooling
Round-link chain after medium frequency quenching, high tempering, intercritical hardening, the low-temperaturetempering is placed on the cooling frame, in air, naturally cool to 25 ℃;
(8) polishing sanding cleaning round-link chain surface
Cooled round-link chain with 400 order sand paperings, sanding, is cleared up the round-link chain surface, make its cleaning;
(9) detect, analyze, characterize
Round-link chain after medium frequency quenching, the tempering is detected, analyzes, characterizes;
Carrying out surface hardness with the HRC-150 Rockwell hardometer detects;
Carry out metallurgical analysis with 100 metaloscopes;
Conclusion: the round-link chain hardness through medium frequency quenching, high tempering, intercritical hardening, low-temperaturetempering reaches HRC 42-45, and intensity reaches 1128KN, and inside metallographic compactness is good.
2. the heat-treatment quenching method of the described a kind of circle chain of mine of claim 1, it is characterized in that: described round-link chain mid-frequency induction hardening state, worktable at the medium frequency quenching machine is put copper tube ruhmkorff coil (6), one end of copper tube ruhmkorff coil (6) is that water intaking valve (7), the other end are outlet valve (8), and round-link chain (1) is put in the interior mid-way of copper tube ruhmkorff coil (6); Water intaking valve (7) and external water inlet pipe UNICOM, outlet valve (8) and external rising pipe UNICOM are opened water intaking valve (7), outlet valve (8) during quenching, and the water that flows cools off copper tube ruhmkorff coil (6); Copper tube ruhmkorff coil (6) is connected with power supply with the medium frequency quenching machine, during medium frequency quenching at voltage of intermediate frequency 700V, IF-FRE 3KH
ZProduce left magnetic field induction line (9), right magnetic field induction line (10) under the state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310252227.0A CN103334000B (en) | 2013-06-24 | 2013-06-24 | Heat-treatment quenching method for mining ring chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310252227.0A CN103334000B (en) | 2013-06-24 | 2013-06-24 | Heat-treatment quenching method for mining ring chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103334000A true CN103334000A (en) | 2013-10-02 |
| CN103334000B CN103334000B (en) | 2014-10-29 |
Family
ID=49242195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310252227.0A Active CN103334000B (en) | 2013-06-24 | 2013-06-24 | Heat-treatment quenching method for mining ring chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103334000B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878173A (en) * | 2015-06-02 | 2015-09-02 | 山西煤矿机械制造有限责任公司 | Heat-treatment quenching method for crusher hammerhead |
| CN105349757A (en) * | 2015-12-16 | 2016-02-24 | 山东能源重装集团鲁南装备制造有限公司 | Heat treatment device for round-link chain and application method thereof |
| CN105907924A (en) * | 2016-02-03 | 2016-08-31 | 保定博尔司电热设备有限公司 | Round-link chain heat treatment energy-saving technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353716A (en) * | 2007-07-24 | 2009-01-28 | 中煤张家口煤矿机械有限责任公司 | Novel mining single ring tempering method |
| CN201517124U (en) * | 2009-08-27 | 2010-06-30 | 湘潭科创机电有限公司 | Multiple copper tube duplex winding spiral type circular ring link quenching and tempering inductor |
| CN201525870U (en) * | 2009-08-27 | 2010-07-14 | 湘潭科创机电有限公司 | Chain quenching and tempering system using intermediate frequency power source |
| CN102534372A (en) * | 2012-01-13 | 2012-07-04 | 北京科技大学 | Preparation method of P110-grade expansion tube for exploiting petroleum and gas |
-
2013
- 2013-06-24 CN CN201310252227.0A patent/CN103334000B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353716A (en) * | 2007-07-24 | 2009-01-28 | 中煤张家口煤矿机械有限责任公司 | Novel mining single ring tempering method |
| CN201517124U (en) * | 2009-08-27 | 2010-06-30 | 湘潭科创机电有限公司 | Multiple copper tube duplex winding spiral type circular ring link quenching and tempering inductor |
| CN201525870U (en) * | 2009-08-27 | 2010-07-14 | 湘潭科创机电有限公司 | Chain quenching and tempering system using intermediate frequency power source |
| CN102534372A (en) * | 2012-01-13 | 2012-07-04 | 北京科技大学 | Preparation method of P110-grade expansion tube for exploiting petroleum and gas |
Non-Patent Citations (1)
| Title |
|---|
| 王东凤等: "矿用高强度圆环链单环感应加热差温回火", 《HEAT TREATMENT OF METALS》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878173A (en) * | 2015-06-02 | 2015-09-02 | 山西煤矿机械制造有限责任公司 | Heat-treatment quenching method for crusher hammerhead |
| CN104878173B (en) * | 2015-06-02 | 2017-03-01 | 山西煤矿机械制造股份有限公司 | A kind of heat-treatment quenching method of grinder hammerhead |
| CN105349757A (en) * | 2015-12-16 | 2016-02-24 | 山东能源重装集团鲁南装备制造有限公司 | Heat treatment device for round-link chain and application method thereof |
| CN105349757B (en) * | 2015-12-16 | 2017-10-17 | 山东能源重装集团鲁南装备制造有限公司 | A kind of round-link chain annealing device and its application method |
| CN105907924A (en) * | 2016-02-03 | 2016-08-31 | 保定博尔司电热设备有限公司 | Round-link chain heat treatment energy-saving technology |
| CN105907924B (en) * | 2016-02-03 | 2018-07-17 | 保定博尔司电热设备有限公司 | A kind of round-link chain Heat Treatment Energy Saving technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103334000B (en) | 2014-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103924060B (en) | A kind of bearing assembly forming residual stress controls method of magnetically processing | |
| CN103343200B (en) | Short-process thermal treatment method of large 35CrNi3MoV steel forgings | |
| CN103334000B (en) | Heat-treatment quenching method for mining ring chain | |
| CN108977637B (en) | Surface induction quenching method for straight bevel gear and application thereof | |
| CN103215419A (en) | Thermal treatment method for improving low-temperature impact toughness of martensite stainless steel | |
| CN105728601A (en) | Manufacturing process for valve spring | |
| CN111926168A (en) | Heat treatment process for driving wheel | |
| CN102925655A (en) | Thermal treatment method of cam shaft | |
| Janutienė et al. | Modelling of induction heating of steel work piece for forging of crankshaft | |
| CN202755028U (en) | Novel valve cap shape quenching sensor | |
| CN108531920A (en) | A kind of pre-treating technology of hydraulic plunger workpiece | |
| US20200048754A1 (en) | Low pressure induction carburization | |
| CN103589828B (en) | The thermal treatment unit of amorphous alloy iron core and method | |
| CN105648448A (en) | Bevel gear heat-treatment technology | |
| CN102191365A (en) | Quenching method and quenching machine tool for single ring of ring chain | |
| CN110656229A (en) | Manufacturing method of domestic 23MnCrNiMo54 steel and application thereof to C-grade large-specification mining round-link chain | |
| CN110629010A (en) | Mine rack multi-tooth-column induction quenching method and device | |
| CN211420260U (en) | Mining rack multi-tooth column induction quenching device | |
| CN203992394U (en) | A kind of meshbeltfurnace accelerate cooling system | |
| CN208604161U (en) | A kind of quenching unit of piston rod heat treatment | |
| CN204824968U (en) | Survey rig vertical scroll high frequency and quench and to use induction coil | |
| KR20130019825A (en) | Jig for raser heat treatment | |
| Zhao et al. | Effect of different tempering processes on microstructure and hardness of Q690 steel | |
| CN205874501U (en) | Excavator thrust wheel support roll way induction heating of portion frock | |
| CN205874490U (en) | Mould work piece guenching unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |