CN105349757A - Heat treatment device for round-link chain and application method thereof - Google Patents
Heat treatment device for round-link chain and application method thereof Download PDFInfo
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- CN105349757A CN105349757A CN201510939929.5A CN201510939929A CN105349757A CN 105349757 A CN105349757 A CN 105349757A CN 201510939929 A CN201510939929 A CN 201510939929A CN 105349757 A CN105349757 A CN 105349757A
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- round
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- link chain
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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
- C21D9/0087—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for chains, for chain links
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- 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
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Abstract
The invention discloses a heat treatment device for a round-link chain and an application method thereof. The device comprises a quenching part and a tempering part which are sequentially arranged, wherein first cooling parts are arranged at the quenching part and the tempering part; the quenching part is provided with a quenching temperature regulating box; the tempering part is sequentially provided with an uniform-temperature tempering heating box, at least one tempering temperature regulating box and a differential-temperature tempering heating box; the quenching temperature regulating box is provided with a second cooling part. The device has the characteristics of being high in integration degree and high in working efficiency; after the round-link chain is quenched, an uniform and small low-carbon lath martensite structure can be obtained; the quenching quality is high; the second cooling part and the first cooling parts are correspondingly connected to a cooling source, so that the cooling quality can be improved, and the requirements of each part of the round-link chain on hardness and toughness can be met.
Description
Technical field
The present invention relates to coal mine equipment manufacturing process technology field, in particular to a kind of round-link chain thermal treatment unit and using method thereof.
Background technology
Along with the development of mechanical coal mining technology, mine flight conveyer, elevating conveyor etc. are large-scale, heavy equipment is widely used, the kernel component that these equipment use are maximum is round-link chain, and the quality and performance quality of round-link chain directly has influence on the working efficiency of equipment and the coal production in colliery.
Circle chain of mine mainly experienced by the developmental stage of the optimization of ring chain steel for mine, heat treatment technics, ring size and shape, different chain design and chain technology processed, impels the mechanical property of circle chain of mine and reliability to obtain larger raising.
The high alloy circular chain steel that the metallic substance that round-link chain uses is manganese Ni-Cr-Mo series, this material has the advantages that hardness is high, toughness is strong, difficulty of processing is large.In addition, because round-link chain is rectangular ring, its shoulder top is different with the requirement of straight-arm portion to hardness, and rational thermal treatment process ensures that round-link chain has the reliable way of higher and stable mechanical property.At present, the process furnace ubiquity heating period of heat-treating round-link chain is long, efficiency is low, be difficult to obtain the problem of very thin austenite crystal, is difficult to reach each position of round-link chain to the requirement of hardness, intensity.Therefore, the heat treatment step of round-link chain becomes the key factor of restriction round-link chain development.
Summary of the invention
The invention provides a kind of round-link chain thermal treatment unit and using method thereof.
For achieving the above object, the invention provides following technical scheme:
A kind of round-link chain thermal treatment unit, comprise set gradually quench section, tempering portion, described quench section is provided with quenching conditioning oven, described tempering portion is disposed with samming tempering heating container, at least one tempering conditioning oven, differential temperature tempering heating container, described quenching conditioning oven place is provided with cooling end two, and described quench section, place of tempering portion are provided with cooling end one.
Further, preheating heating container, austenitizing heating container is also disposed with before described quenching conditioning oven.
Further, the quantity of described tempering conditioning oven is set to 4-6, and along the direction of motion of round-link chain, adjacent tempering conditioning oven connects in turn.
Further, described quenching conditioning oven, tempering conditioning oven inside are provided with ceramic thermal insulation structure, and described preheating heating container, austenitizing heating container, samming tempering heating container and differential temperature tempering heating container inside are all set to heat induced loop construction.
Further, also comprise driving section and control part, described control part is connected with quench section, tempering portion, driving section respectively, and described driving section comprises initiatively chain cable fairlead and driven chain cable fairlead, described active chain cable fairlead is arranged on the end of thermal treatment unit, and it is inner that described driven chain cable fairlead is arranged on cooling end one.
Further, described cooling end two comprises the quench head and pipe connecting that are connected, described quench head is just arranged quenching conditioning oven, its surface is provided with perforate, its inside is provided with through hole, described cooling end one is connected cooling source respectively with cooling end two, and the axis angle that axis and the quenching conditioning oven of described perforate export is 30-70 °.
Separately, the present invention also provide a kind of round-link chain thermal treatment unit using method, comprise the steps:
(1) round-link chain is connected with haulage chain, and described haulage chain is run through quench section and tempering portion successively through driving section, start described control part, described quenching conditioning oven is preheated to 950-960 DEG C, described tempering conditioning oven is preheated to 350-400 DEG C;
(2) under the mating reaction of described active chain cable fairlead, driven chain cable fairlead, described round-link chain at the uniform velocity moves under the draw of haulage chain;
(3) described round-link chain enters preheating heating container successively, austenitizing heating container heats, and heat-up time is respectively 1.5-2.5min, and enter quenching conditioning oven afterwards and carry out temperature adjustment, the temperature adjustment time is 1-2min;
(4) round-link chain processed through step (3) arrives described cooling end two, carries out first water-spraying control, and cooling time is 2.5-3.5min, water coolant flow velocity is 0.2-0.6m/s, enter described cooling end one afterwards, carry out cooling twice, cooling time is 2.5-5.5min;
(5) round-link chain processed through step (4) enters described samming tempering heating container, and heat-up time is 1.5-2.5min, and sequentially entering described tempering conditioning oven carries out temperature adjustment afterwards, and the temperature adjustment time is 1.5-2min;
(6) round-link chain processed through step (5) enters described cooling end one, and carry out three coolings, cooling time is 3-4.5min, and enter the heating of described differential temperature tempering heating container afterwards, heat-up time is 1.5-2.5min;
(7) round-link chain processed through step (6) enters described cooling end one again, and carry out four coolings, cooling time is 2-4min, completes heat treatment step.
Further, along the direction of motion of round-link chain, the design temperature of described tempering conditioning oven increases successively, and the temperature head of adjacent tempering conditioning oven is 10-20 DEG C, the temperature of cooling water at described cooling end one place is set to 20-40 DEG C, the temperature of cooling water at described cooling end two place is set to 10-20 DEG C, the timed interval of described first water-spraying control and cooling twice is set to 1-2min, described cooling twice and the timed interval cooled for three times are set to 9-15min, and described three coolings are set to 2-4min with the timed interval cooled for four times.
Further, the translational speed of described round-link chain is 900-1100mm/min.
Further, described round-link chain is after the heating of preheating heating container, and its shoulder head temperature is 620-630 DEG C, and its straight-arm portion temperature is 690-710 DEG C; After described austenitizing heating container heating, its shoulder head temperature is 940-950 DEG C, and its straight-arm portion temperature is 960-980 DEG C; After described samming tempering heating container heating, its shoulder head temperature is 450-470 DEG C, and its straight-arm portion temperature is 290-320 DEG C; After described differential temperature tempering heating container heating, its shoulder head temperature is 290-310 DEG C, and its straight-arm portion temperature is 490-500 DEG C.
The invention has the beneficial effects as follows:
1, the present invention is provided with quench section, tempering portion, cooling end one and cooling end two, disposablely can complete the thermal treatment process of round-link chain, has the advantages that integration degree is high, working efficiency is high.
2, the present invention is provided with quenching conditioning oven, eliminates the temperature head in shoulder top and straight-arm portion, ensures each position homogeneous temperature, uniform composition before quenching of round-link chain, obtains even, tiny low-carbon lath martensite tissue after quenching, improves quenching quality.
3, adjacent in the present invention tempering conditioning oven connects in turn, contributes to reducing round-link chain and extraneous duration of contact, avoids thermal conduction occurs, causes heat loss.
4, the present invention is provided with cooling end two, rapid water-spraying control is carried out to the round-link chain through quenching conditioning oven, cooling end two is connected cooling source respectively with cooling end one, and the temperature of described cooling end two place water coolant is lower than the temperature of cooling end one place water coolant, contributes to improving cooling quality.
5, the present invention sets the translational speed of round-link chain, heat-up time, temperature adjustment time, cooling time and cooling interval, ensures that round-link chain quenches fully or temper in each case, meets the requirement of round-link chain to hardness, toughness aspect.
6, the present invention is provided with samming tempering heating container, tempering conditioning oven, ensures that the shoulder top of round-link chain obtains the abundant tempering of design temperature, contributes to eliminating internal stress, impels the shoulder top of round chain link to have higher resistance to wearing and supporting capacity.
7, the present invention is provided with differential temperature tempering heating container, ensures that the straight-arm portion of round-link chain obtains higher tempering temperature, contributes to improving being positioned at the moulding of welding zone, straight-arm portion, toughness, prevents by the corrosion-fatigue failure caused that rubs.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is quench head structural representation of the present invention;
Fig. 3 is heat induced loop construction schematic diagram of the present invention;
Fig. 4 is ceramic thermal insulation structural representation of the present invention;
Fig. 5 is round-link chain structural representation of the present invention.
In accompanying drawing: quench section 1, tempering portion 2, cooling end 1, cooling end 24, quench head 41, pipe connecting 42, through hole 43, perforate 44, preheating heating container 5, austenitizing heating container 6, quenching conditioning oven 7, samming tempering heating container 8, tempering conditioning oven 9, differential temperature tempering heating container 10, initiatively chain cable fairlead 11, driven chain cable fairlead 12, control part 13, heat induced loop construction 14, cabinet shell 141, heat induced coil 142, insulation heat preservation layer 143, inner core 144, thermal probe 145, ceramic thermal insulation structure 15, cabinet shell 151, heat preserving ceramic 152, heating unit 153, stainless steel inner core 154, K type thermopair 155, round-link chain 16, straight-arm portion 161, shoulder top 162,
Wherein, A, B, C, D represent hardness test place on round-link chain surface respectively.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one:
As shown in Figure 1, shown in Figure 5, a kind of round-link chain thermal treatment unit, comprise set gradually quench section 1, tempering portion 2, described quench section 1, place of tempering portion 2 are provided with cooling end 1, disposablely can complete the thermal treatment process of round-link chain, integration degree is high, and working efficiency is high.
Described quench section 1 is provided with quenching conditioning oven 7, preheating heating container 5 is also disposed with before described quenching conditioning oven 7, austenitizing heating container 6, described round-link chain 16 is at preheating heating container 5, when at the uniform velocity moving in austenitizing heating container 6, constantly heated, due to induction quenching characteristic, during high temperature, straight-arm portion 161 temperature of round-link chain 16 is far below shoulder top 162 temperature, temperature head can have an impact to the structure and properties after round-link chain quenching, add quenching conditioning oven 7, its design temperature is 950-960 DEG C, impel straight-arm portion 161 high temperature to shoulder top 162 cryogenic heat transfer, reach temperature equilibrium, eliminate temperature head, ensure each position homogeneous temperature before quenching of round-link chain, uniform composition, obtain evenly after quenching, tiny low-carbon lath martensite tissue, improve quenching quality.
As Fig. 1, shown in Fig. 2, described quenching conditioning oven 7 place is provided with cooling end 24, described cooling end 24 comprises the quench head 41 and pipe connecting 42 that are connected, described quench head 41 is just arranged quenching conditioning oven 7, its surface is provided with perforate 44, its inside is provided with through hole 43, described round-link chain 16 runs through through hole 43 and enters cooling end 1, described round-link chain 16 is when the outlet of described quenching conditioning oven 7 is derived, water coolant is sprayed to round-link chain 16 by described perforate 44, carry out first water-spraying control, water coolant flow velocity is 0.2-0.6m/s, temperature of cooling water is set to 10-20 DEG C, the speed of cooling of described cooling end 24 is impelled to be greater than the critical cooling velocity of round-link chain 16, in addition the cooling power of recirculated water is better than the cooling power of stationary water, described round-link chain 16 inside is impelled to carry out martensitic transformation rapidly, the axis angle that axis and the quenching conditioning oven 7 of described perforate 44 export is 30-70 °, ensure that the water coolant sprayed from perforate 44 can converge to round-link chain 16 surface, improve cooling performance.
After first water-spraying control, described round-link chain 16 enters cooling end 1 and carries out cooling twice, temperature of cooling water is set to 20-40 DEG C, described cooling end 1 is connected cooling source respectively with cooling end 24, and the temperature of described cooling end 24 place water coolant is lower than the temperature of cooling end 1 place water coolant, the liquid level of described cooling end 24 place water coolant is higher than the liquid level of cooling end 1 place water coolant, the timed interval of described first water-spraying control and cooling twice is set to 1-2min, contribute to the cooling quality improving cooling end 1 and cooling end 24, adopt the first strong cold rear weak cold type of cooling, contribute to obtaining evenly, tiny low-carbon lath martensite tissue.
Described driving section comprises initiatively chain cable fairlead 11 and driven chain cable fairlead 12, described active chain cable fairlead 11 is arranged on the end of thermal treatment unit, in the present embodiment, described active chain cable fairlead 11 is separately positioned on preheating heating container 1, differential temperature tempering heating container 10 place, it is inner that described driven chain cable fairlead 12 is arranged on cooling end 1, under the mating reaction of described active chain cable fairlead 11 and driven chain cable fairlead 12, at the uniform velocity moving with the speed of 900-1100mm/min of described round-link chain 16, described control part 13 is connected with quench section 1, tempering portion 2, driving section respectively.
Embodiment two:
As Fig. 1, shown in Fig. 5, described tempering portion 2 is disposed with samming tempering heating container 8, at least one tempering conditioning oven 9, differential temperature tempering heating container 10, described samming tempering heating container 8 ensures that the shoulder top 162 of round-link chain obtains the abundant tempering of design temperature, contribute to eliminating internal stress, the shoulder top 162 of round chain link is impelled to have higher resistance to wearing and supporting capacity, the design temperature of described tempering conditioning oven 9 is 350-400 DEG C, described samming tempering heating container 8 and differential temperature tempering heating container 10 in turn between be provided with 4-6 tempering conditioning oven 9, and along the direction of motion of round-link chain, adjacent tempering conditioning oven 9 connects in turn, contribute to reducing round-link chain and extraneous duration of contact, avoid thermal conduction occurs, cause heat loss, along the direction of motion of round-link chain, the design temperature of described tempering conditioning oven 9 increases successively, and the temperature head of adjacent tempering conditioning oven 9 is 10-20 DEG C, extend the soaking time of round-link chain, the temperature head at the maximum each position of elimination round-link chain, described round-link chain 16 is after tempering conditioning oven 9 temperature adjustment, carry out three coolings, described pending round-link chain is after cooling twice, martensite and the remaining austenite structure of its inside are unstable, continue to change, described cooling twice and the timed interval cooled for three times are set to 9-15min, effectively can stablize interior tissue, reduce strain cracking tendency.
Described differential temperature tempering heating container 10 ensures that the straight-arm portion 161 of round-link chain obtains higher tempering temperature, described round-link chain 16 is after the heating of differential temperature tempering heating container 10, carry out four coolings, described three coolings are set to 2-4min with the timed interval cooled for four times, contribute to improving and be positioned at the moulding of welding zone, straight-arm portion 161, toughness, prevent by the corrosion-fatigue failure caused that rubs.
The translational speed of described round-link chain 16, heat-up time, temperature adjustment time, cooling time and cooling interval are preferably set, ensures that round-link chain quenches fully or temper in each case, meet the requirement of round-link chain to hardness, toughness aspect.
As Fig. 1, shown in Fig. 4, described quenching conditioning oven 7, tempering conditioning oven 9 inside is provided with ceramic thermal insulation structure 15, described ceramic thermal insulation structure 15 ecto-entad is disposed with cabinet shell 151, heat preserving ceramic 152 and stainless steel inner core 154, described ceramic thermal insulation structure 15 selects refractory ceramics, there is good waterproof, heat insulation function, described heat preserving ceramic inside is provided with heating unit 153, described heating unit 153 selects resistance wire, to ensure the internal temperature of ceramic thermal insulation structure 15, K type thermopair 155 is provided with between described cabinet shell 151 and stainless steel inner core 154.
As Fig. 1, shown in Fig. 3, described preheating heating container 5, austenitizing heating container 6, samming tempering heating container 8 and differential temperature tempering heating container 10 inside are provided with heat induced loop construction 14, described heat induced loop construction 14 ecto-entad is disposed with cabinet shell 141, heat induced coil 142, insulation heat preservation layer 143 and inner core 144, described heat induced coil 142 inside passes into water coolant, thermal probe 145 is provided with between described inner core 144 and cabinet shell 141, described insulation heat preservation layer 143 selects refractory mortar, its thickness is 15-25mm, there is good heat insulation buffering, insulating effect, described heat induced coil 142 is set to intermediate frequency furnace ruhmkorff coil.
The power of described preheating heating container 5 is 210-255kW, and the power of described austenitizing heating container 6 is 260-320kW, and the power of described samming tempering heating container 8 is 150-195kW, and the power of described differential temperature tempering heating container 10 is 110-140kW.
Embodiment three:
In the present embodiment, the specification of described round-link chain 16 is Φ 38mm × 137mm, and the quantity of described tempering conditioning oven 9 is set to 4, when heat-treating described round-link chain 16, comprises the following steps:
(1) round-link chain 16 is connected with haulage chain, and described haulage chain is run through quench section 1 and tempering portion 2 successively through driving section, start described control part 13, described quenching conditioning oven 7 is preheated to 950 DEG C, described tempering conditioning oven 9 is preheated to 350 DEG C, 370 DEG C, 390 DEG C, 400 DEG C successively;
(2) under the mating reaction of described active chain cable fairlead 11, driven chain cable fairlead 12, described round-link chain 16 at the uniform velocity moves under the draw of haulage chain;
(3) described round-link chain 16 enters preheating heating container 5 successively, austenitizing heating container 6 heats, and heat-up time is respectively 1.5min, and enter quenching conditioning oven 7 afterwards and carry out temperature adjustment, the temperature adjustment time is 1min;
(4) described round-link chain 16 is after temperature adjustment process, arrives described cooling end 24, carries out first water-spraying control, and cooling time is 2.5min, enters described cooling end 1 afterwards, carries out cooling twice, and cooling time is 2.5min;
(5) described round-link chain 16 is after cooling twice, and enter described samming tempering heating container 8 and heat, heat-up time is 1.5min, and sequentially entering described tempering conditioning oven 9 carries out temperature adjustment afterwards, and the temperature adjustment time is 1.5min;
(6) described round-link chain 16 is after tempering conditioning oven 9 temperature adjustment, enters described cooling end 1, and carry out three coolings, cooling time is 3min, and enter described differential temperature tempering heating container 10 afterwards and heat, heat-up time is 1.5min;
(7) described round-link chain 16 is after the heating of differential temperature tempering heating container 10, again enters described cooling end 1, and carry out four coolings, cooling time is 2min, completes heat treatment step.
In the present embodiment, the power of described preheating heating container 5 is 210kW, and the power of described austenitizing heating container 6 is 260kW, and the power of described samming tempering heating container 8 is 150kW, the power of described differential temperature tempering heating container 10 is 110kW, and the translational speed of described round-link chain 16 is 900mm/min.
The temperature of cooling water at described cooling end one place is set to 20 DEG C, the temperature of cooling water at described cooling end two place is set to 10 DEG C, water coolant flow velocity is 0.2m/s, the timed interval of described first water-spraying control and cooling twice is set to 1min, described cooling twice and the timed interval cooled for three times are set to 9min, described three coolings are set to 2min with the timed interval cooled for four times, and the axis angle that axis and the quenching conditioning oven 7 of described perforate 44 export is 30 °.
In the present embodiment, described round-link chain 16 is after described preheating heating container 5 heats, and its shoulder top 162 temperature is 620 DEG C, and its straight-arm portion 161 temperature is 690 DEG C; After described austenitizing heating container 6 heats, its shoulder top 162 temperature is 940 DEG C, and its straight-arm portion 161 temperature is 960 DEG C; After described samming tempering heating container 8 heating, its shoulder top 162 temperature is 450 DEG C, and its straight-arm portion 161 temperature is 290 DEG C; After described differential temperature tempering heating container 10 heating, its shoulder top 162 temperature is 290 DEG C, and its straight-arm portion 161 temperature is 490 DEG C.
Embodiment four:
In the present embodiment, the part identical with embodiment three repeats no more, unlike:
The specification of described round-link chain 16 is Φ 42mm × 146mm, and the quantity of described tempering conditioning oven 9 is set to 5, and described quenching conditioning oven 7 is preheated to 955 DEG C, and described tempering conditioning oven 9 is preheated to 350 DEG C, 365 DEG C, 380 DEG C, 390 DEG C, 400 DEG C successively.
When described round-link chain 16 carries out heat treated in preheating heating container 5, austenitizing heating container 6, samming tempering heating container 8, differential temperature tempering heating container 10, heat-up time is 2.5min; The temperature adjustment time in quenching conditioning oven 7 is 2min; The temperature adjustment time in described tempering conditioning oven 9 is 2min; The described first water-spraying control time is 3.5min, and the cooling twice time is 5.5min, and three cooling times are 4.5min, and four cooling times are 4min; The temperature of cooling water at described cooling end one place is set to 40 DEG C, the temperature of cooling water at described cooling end two place is set to 20 DEG C, water coolant flow velocity is 0.6m/s, the timed interval of described first water-spraying control and cooling twice is set to 1.5min, described cooling twice and the timed interval cooled for three times are set to 15min, and described three coolings are set to 4min with the timed interval cooled for four times.
In the present embodiment, the power of described preheating heating container 5 is 255kW, the power of described austenitizing heating container 6 is 320kW, the power of described samming tempering heating container 8 is 195kW, the power of described differential temperature tempering heating container 10 is 140kW, the translational speed of described round-link chain 16 is 1000mm/min, and the axis angle that axis and the quenching conditioning oven 7 of described perforate 44 export is 70 °.
In the present embodiment, described round-link chain 16 is after described preheating heating container 5 heats, and its shoulder top 162 temperature is 630 DEG C, and its straight-arm portion 161 temperature is 700 DEG C; After described austenitizing heating container 6 heats, its shoulder top 162 temperature is 950 DEG C, and its straight-arm portion 161 temperature is 980 DEG C; After described samming tempering heating container 8 heating, its shoulder top 162 temperature is 470 DEG C, and its straight-arm portion 161 temperature is 320 DEG C; After described differential temperature tempering heating container 10 heating, its shoulder top 162 temperature is 310 DEG C, and its straight-arm portion 161 temperature is 500 DEG C.
Embodiment five:
In the present embodiment, the part identical with embodiment three repeats no more, unlike:
The specification of described round-link chain 16 is Φ 38mm × 146mm, the quantity of described tempering conditioning oven 9 is set to 6, described quenching conditioning oven 7 is preheated to 960 DEG C, and described tempering conditioning oven 9 is preheated to 350 DEG C, 360 DEG C, 370 DEG C, 380 DEG C, 390 DEG C, 400 DEG C successively.
When described round-link chain 16 carries out heat treated in preheating heating container 5, austenitizing heating container 6, samming tempering heating container 8, differential temperature tempering heating container 10, heat-up time is 2min; The temperature adjustment time in quenching conditioning oven 7 is 1.5min; The temperature adjustment time in described tempering conditioning oven 9 is 1.7min; The described first water-spraying control time is 3min, the cooling twice time is 4min, three cooling times are 4min, four cooling times are 3min, the temperature of cooling water at described cooling end one place is set to 30 DEG C, the temperature of cooling water at described cooling end two place is set to 15 DEG C, water coolant flow velocity is 0.4m/s, the timed interval of described first water-spraying control and cooling twice is set to 2min, described cooling twice and the timed interval cooled for three times are set to 12min, and described three coolings are set to 3min with the timed interval cooled for four times.
In the present embodiment, the power of described preheating heating container 5 is 232kW, the power of described austenitizing heating container 6 is 290kW, the power of described samming tempering heating container 8 is 175kW, the power of described differential temperature tempering heating container 10 is 130kW, the translational speed of described round-link chain 16 is 1100mm/min, and the axis angle that axis and the quenching conditioning oven 7 of described perforate 44 export is 50 °.
In the present embodiment, described round-link chain 16 is after described preheating heating container 5 heats, and its shoulder top 162 temperature is 625 DEG C, and its straight-arm portion 161 temperature is 710 DEG C; After described austenitizing heating container 6 heats, its shoulder top 162 temperature is 945 DEG C, and its straight-arm portion 161 temperature is 970 DEG C; After described samming tempering heating container 8 heating, its shoulder top 162 temperature is 460 DEG C, and its straight-arm portion 161 temperature is 300 DEG C; After described differential temperature tempering heating container 10 heating, its shoulder top 162 temperature is 300 DEG C, and its straight-arm portion 161 temperature is 500 DEG C.
Contrast experiment one:
Get the round-link chain of the embodiment of the present invention three, embodiment four and embodiment five process respectively, be labeled as sample one, sample two and sample three respectively, hardness test is carried out to described three.
As shown in Figure 5, A, B, C, D is got everywhere on round-link chain surface, often locating to get respectively a little one, point two, point three and point four, described point one is positioned at round-link chain surface, described point two is positioned at apart from round-link chain surface 1/4 radius, and described point three is positioned at apart from round-link chain surface 1/3 radius, and described point four is positioned at apart from round-link chain surface 1/2 radius, hardness determination is carried out to the above position, show that experimental data is as table 1:
Table 1:
Above-mentioned experiment is carried out in Shandong energy refitting southern Shandong equipment manufacturing company limited of group laboratory
By as above analysis of experimental data, often locating to detect in position, surface and the centre hardness of round-link chain are unanimous on the whole, and the Hardness Distribution detecting position is everywhere even.
Contrast experiment two:
Get after the sample one described in contrast experiment one clamps on trier, according to the regulation of GB/T12718-2009, first by the experiment load on of trier to 725kN, then load is down to initial load, milscale is used to demarcate its length, by experiment load to be not more than 20N/mm per second
2loading velocity be loaded into 1450kN, use milscale demarcate its length, calculate apply experiment load under elongation, be labeled as δ
1; Continue to sample one applying load, till fracture, the total elongation of record breaking load and sample one, calculates disrumpent feelings percentage of total elongation, is labeled as δ
1';
Adopt aforesaid method, calculate the elongation δ under the experiment load of sample two respectively
2and disrumpent feelings percentage of total elongation δ
2', calculate the elongation δ under the experiment load of sample three
3and disrumpent feelings percentage of total elongation δ
3', the experimental data drawn is as such as table 2:
Table 2:
| Elongation/% | Sample one | Sample two | Sample three |
| Elongation δ under experiment load | 1.2 | 1.3 | 1.2 |
| Disrumpent feelings percentage of total elongation δ ' | 14 | 15 | 16 |
Above-mentioned experiment is carried out by as above analysis of experimental data in Shandong energy refitting southern Shandong equipment manufacturing company limited of group laboratory, elongation under the experiment load of described sample one, sample two and sample three all≤1.6%, the disrumpent feelings percentage of total elongation of described three all >=12%, round-link chain through round-link chain thermal treatment unit of the present invention process is described, its hardness and toughness all can be up to state standards.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (10)
1. a round-link chain thermal treatment unit, it is characterized in that: comprise set gradually quench section, tempering portion, described quench section, place of tempering portion are provided with cooling end one, described quench section is provided with quenching conditioning oven, described tempering portion is disposed with samming tempering heating container, at least one tempering conditioning oven, differential temperature tempering heating container, and described quenching conditioning oven place is provided with cooling end two.
2. a kind of round-link chain thermal treatment unit according to claim 1, is characterized in that: be also disposed with preheating heating container, austenitizing heating container before described quenching conditioning oven.
3. a kind of round-link chain thermal treatment unit according to claim 2, is characterized in that: the quantity of described tempering conditioning oven is set to 4-6, and along the direction of motion of round-link chain, adjacent tempering conditioning oven connects in turn.
4. a kind of round-link chain thermal treatment unit according to claim 3, it is characterized in that: described quenching conditioning oven, tempering conditioning oven inside are provided with ceramic thermal insulation structure, described preheating heating container, austenitizing heating container, samming tempering heating container and differential temperature tempering heating container inside are all set to heat induced loop construction.
5. a kind of round-link chain thermal treatment unit according to claim 1, it is characterized in that: also comprise driving section and control part, described control part is connected with quench section, tempering portion, driving section respectively, described driving section comprises initiatively chain cable fairlead and driven chain cable fairlead, described active chain cable fairlead is arranged on the end of thermal treatment unit, and it is inner that described driven chain cable fairlead is arranged on cooling end one.
6. a kind of round-link chain thermal treatment unit according to claim 1, it is characterized in that: described cooling end two comprises the quench head and pipe connecting that are connected, described quench head is just arranged quenching conditioning oven, its surface is provided with perforate, its inside is provided with through hole, described cooling end one is connected cooling source respectively with cooling end two, and the axis angle that axis and the quenching conditioning oven of described perforate export is 30-70 °.
7. adopt a using method for the round-link chain thermal treatment unit as described in claim 1-6 any one, it is characterized in that: comprise the steps:
(1) round-link chain is connected with haulage chain, and described haulage chain is run through quench section and tempering portion successively through driving section, start described control part, described quenching conditioning oven is preheated to 950-960 DEG C, described tempering conditioning oven is preheated to 350-400 DEG C;
(2) under the mating reaction of described active chain cable fairlead, driven chain cable fairlead, described round-link chain at the uniform velocity moves under the draw of haulage chain;
(3) described round-link chain enters preheating heating container successively, austenitizing heating container heats, and heat-up time is respectively 1.5-2.5min, and enter quenching conditioning oven afterwards and carry out temperature adjustment, the temperature adjustment time is 1-2min;
(4) round-link chain processed through step (3) arrives described cooling end two, carries out first water-spraying control, and cooling time is 2.5-3.5min, water coolant flow velocity is 0.2-0.6m/s, enter described cooling end one afterwards, carry out cooling twice, cooling time is 2.5-5.5min;
(5) round-link chain processed through step (4) enters described samming tempering heating container, and heat-up time is 1.5-2.5min, and sequentially entering described tempering conditioning oven carries out temperature adjustment afterwards, and the temperature adjustment time is 1.5-2min;
(6) round-link chain processed through step (5) enters described cooling end one, and carry out three coolings, cooling time is 3-4.5min, and enter the heating of described differential temperature tempering heating container afterwards, heat-up time is 1.5-2.5min;
(7) round-link chain processed through step (6) enters described cooling end one again, and carry out four coolings, cooling time is 2-4min, completes heat treatment step.
8. the using method of a kind of round-link chain thermal treatment unit according to claim 7, it is characterized in that: along the direction of motion of round-link chain, the design temperature of described tempering conditioning oven increases successively, and the temperature head of adjacent tempering conditioning oven is 10-20 DEG C, the temperature of cooling water at described cooling end one place is set to 20-40 DEG C, the temperature of cooling water at described cooling end two place is set to 10-20 DEG C, the timed interval of described first water-spraying control and cooling twice is set to 1-2min, described cooling twice and the timed interval cooled for three times are set to 9-15min, described three coolings are set to 2-4min with the timed interval cooled for four times.
9. the using method of a kind of round-link chain thermal treatment unit according to claim 8, is characterized in that: the translational speed of described round-link chain is 900-1100mm/min.
10. the using method of a kind of round-link chain thermal treatment unit according to claim 9, is characterized in that: described round-link chain is after the heating of preheating heating container, and its shoulder head temperature is 620-630 DEG C, and its straight-arm portion temperature is 690-710 DEG C; After described austenitizing heating container heating, its shoulder head temperature is 940-950 DEG C, and its straight-arm portion temperature is 960-980 DEG C; After described samming tempering heating container heating, its shoulder head temperature is 450-470 DEG C, and its straight-arm portion temperature is 290-320 DEG C; After described differential temperature tempering heating container heating, its shoulder head temperature is 290-310 DEG C, and its straight-arm portion temperature is 490-500 DEG C.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193041A (en) * | 2018-03-23 | 2018-06-22 | 安吉长虹制链有限公司 | A kind of round-link chain annealing device and its method |
| CN109376365A (en) * | 2018-08-03 | 2019-02-22 | 武汉船用机械有限责任公司 | A kind of design method of round-link chain |
| CN110396580A (en) * | 2018-12-06 | 2019-11-01 | 中煤张家口煤矿机械有限责任公司 | Cooling control system is used in round-link chain quenching |
| CN111872294A (en) * | 2020-07-14 | 2020-11-03 | 山东能源重装集团金源机械有限公司 | Method for improving forging processing quality of petroleum elevator |
| 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 |
| CN115125385A (en) * | 2022-05-27 | 2022-09-30 | 洛阳中重铸锻有限责任公司 | Method for improving furnace mouth of large-scale supporting roll differential temperature furnace and protecting roll neck from cotton application |
Citations (3)
| 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 |
| CN103334000A (en) * | 2013-06-24 | 2013-10-02 | 山西煤矿机械制造有限责任公司 | Heat-treatment quenching method for mining ring chain |
| CN205473896U (en) * | 2015-12-16 | 2016-08-17 | 山东能源重装集团鲁南装备制造有限公司 | Round -link chain heat treatment device |
-
2015
- 2015-12-16 CN CN201510939929.5A patent/CN105349757B/en active Active
Patent Citations (3)
| 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 |
| CN103334000A (en) * | 2013-06-24 | 2013-10-02 | 山西煤矿机械制造有限责任公司 | Heat-treatment quenching method for mining ring chain |
| CN205473896U (en) * | 2015-12-16 | 2016-08-17 | 山东能源重装集团鲁南装备制造有限公司 | Round -link chain heat treatment device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193041A (en) * | 2018-03-23 | 2018-06-22 | 安吉长虹制链有限公司 | A kind of round-link chain annealing device and its method |
| CN108193041B (en) * | 2018-03-23 | 2024-03-12 | 安吉长虹制链有限公司 | Round-link chain heat treatment device and method thereof |
| CN109376365A (en) * | 2018-08-03 | 2019-02-22 | 武汉船用机械有限责任公司 | A kind of design method of round-link chain |
| CN109376365B (en) * | 2018-08-03 | 2022-11-29 | 武汉船用机械有限责任公司 | Design method of round-link chain |
| CN110396580A (en) * | 2018-12-06 | 2019-11-01 | 中煤张家口煤矿机械有限责任公司 | Cooling control system is used in round-link chain quenching |
| CN111872294A (en) * | 2020-07-14 | 2020-11-03 | 山东能源重装集团金源机械有限公司 | Method for improving forging processing quality of petroleum elevator |
| 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 |
| CN115125385A (en) * | 2022-05-27 | 2022-09-30 | 洛阳中重铸锻有限责任公司 | Method for improving furnace mouth of large-scale supporting roll differential temperature furnace and protecting roll neck from cotton application |
| CN115125385B (en) * | 2022-05-27 | 2024-02-20 | 洛阳中重铸锻有限责任公司 | Large-scale support roll differential temperature furnace mouth reconstruction and roll neck cotton-dressing protection method |
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