CN105349757B - A kind of round-link chain annealing device and its application method - Google Patents
A kind of round-link chain annealing device and its application method Download PDFInfo
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- CN105349757B CN105349757B CN201510939929.5A CN201510939929A CN105349757B CN 105349757 B CN105349757 B CN 105349757B CN 201510939929 A CN201510939929 A CN 201510939929A CN 105349757 B CN105349757 B CN 105349757B
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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
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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
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
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Abstract
The invention discloses a kind of round-link chain annealing device and its application method, the round-link chain annealing device includes the quenching portion set gradually, tempering portion, the quenching portion, cooling end one is provided with tempering portion, the quenching portion is provided with quenching controlled temperature cabinet, the tempering portion is disposed with samming tempering heater box, at least one tempering controlled temperature cabinet, differential temperature is tempered heater box, cooling end two is provided with the quenching controlled temperature cabinet, the present invention has integration degree high, the characteristics of operating efficiency is high, resulted in after round-link chain quenching uniform, tiny low-carbon lath martensite tissue, quench quality high, cooling end two is connected cooling source respectively with cooling end one in the present invention, it is favorably improved cooling quality, each position of round-link chain is met to hardness, requirement in terms of toughness.
Description
Technical field
The present invention relates to coal mine equipment manufacturing process technology field, in particular to a kind of round-link chain annealing device and
Its application method.
Background technology
With the development of mechanical coal mining technology, mine flight conveyer, elevating conveyor etc. are large-scale, jumbo has been obtained extensively
General application, these equipment are round-link chains using most kernel components, and the quality and performance quality of round-link chain are directly affected
To the operating efficiency and the coal production in colliery of equipment.
Circle chain of mine mainly experienced the optimizing of ring chain steel for mine, heat treatment technics, ring size and shape, different
Chain design and chain technology processed developing stage, promote circle chain of mine mechanical property and reliability have been obtained for compared with
Big raising.
The metal material that round-link chain is used is the high alloy circular chain steel of manganese Ni-Cr-Mo series, and the material has hardness high, tough
The characteristics of property is strong, difficulty of processing is big.Further, since round-link chain is rectangular ring, with requirement of the straight-arm portion to hardness at the top of its shoulder
Difference, rational Technology for Heating Processing is to ensure that round-link chain has the reliable method of relatively high and stable mechanical property.At present, to circle
Heating furnace generally existing length heating cycle that loop chain is heat-treated, efficiency is low, be difficult to obtain very thin austenite crystal
Problem, is extremely difficult to requirement of each position of round-link chain to hardness, intensity.Therefore, the heat treatment step of round-link chain turns into restriction and justified
The key factor of loop chain development.
The content of the invention
The invention provides a kind of round-link chain annealing device and its application method.
To achieve the above object, the present invention provides following technical scheme：
A kind of round-link chain annealing device, including quenching portion, the tempering portion set gradually, the quenching portion is provided with quenching
Controlled temperature cabinet, the tempering portion is disposed with samming tempering heater box, at least one tempering controlled temperature cabinet, differential temperature tempering heater box,
It is provided with the quenching controlled temperature cabinet at cooling end two, the quenching portion, tempering portion and is provided with cooling end one.
Further, preheating heater box, austenitizing heater box are also disposed with before the quenching controlled temperature cabinet.
Further, the quantity of the tempering controlled temperature cabinet is set to 4-6, and along the direction of motion of round-link chain, it is adjacent
Tempering controlled temperature cabinet be sequentially connected with.
Further, the quenching controlled temperature cabinet, be provided with ceramic thermal insulation structure inside tempering controlled temperature cabinet, the preheating heating
Heating induction coil structure is disposed as inside case, austenitizing heater box, samming tempering heater box and differential temperature tempering heater box.
Further, in addition to driving section and control unit, the control unit is connected with quenching portion, tempering portion, driving section respectively,
The driving section includes active chain cable fairlead and driven chain cable fairlead, and the active chain cable fairlead is arranged on the end of annealing device, institute
Driven chain cable fairlead is stated to be arranged on inside cooling end one.
Further, the cooling end two includes quenching shower nozzle and the connecting tube being connected, and the quenching shower nozzle is just to quenching
Controlled temperature cabinet is set, and its surface is provided with perforate, and it is internally provided with through hole, and the cooling end one and cooling end two connect cold respectively
But source, the axis angle of the axis and the outlet of quenching controlled temperature cabinet of the perforate is 30-70 °.
In addition, the present invention also provides a kind of application method of round-link chain annealing device, comprise the following steps：
(1) round-link chain is connected with haulage chain, and the traction chain warp driving section is sequentially passed through into quenching portion and tempering
Portion, starts the control unit, and the quenching controlled temperature cabinet is preheated into 950-960 DEG C, and the tempering controlled temperature cabinet is preheated into 350-
400℃；
(2) under the active chain cable fairlead, the mating reaction of driven chain cable fairlead, the round-link chain is made in the traction of haulage chain
At the uniform velocity moved under；
(3) round-link chain sequentially enters preheating heater box, austenitizing heater box and heated, and the heat time is respectively
1.5-2.5min, enters quenching controlled temperature cabinet and carries out temperature adjustment, the temperature adjustment time is 1-2min afterwards；
(4) round-link chain by step (3) processing reaches the cooling end two, carries out first water-spraying control, cool time
For 2.5-3.5min, cooling water flow velocity is 0.2-0.6m/s, afterwards into the cooling end one, secondary cooling is carried out, during cooling
Between be 2.5-5.5min；
(5) round-link chain by step (4) processing enters samming tempering heater box, and the heat time is 1.5-
2.5min, order is into the tempering controlled temperature cabinet progress temperature adjustment afterwards, and the temperature adjustment time is 1.5-2min；
(6) round-link chain by step (5) processing enters the cooling end one, carries out three coolings, cool time is 3-
4.5min, enters differential temperature tempering heater box heating, the heat time is 1.5-2.5min afterwards；
(7) round-link chain by step (6) processing is again introduced into the cooling end one, carries out four coolings, cool time
For 2-4min, heat treatment step is completed.
Further, along the direction of motion of round-link chain, the design temperature of the tempering controlled temperature cabinet increases successively, and adjacent
The temperature difference for being tempered controlled temperature cabinet is that the cooling water temperature at 10-20 DEG C, the cooling end one is set to 20-40 DEG C, the cooling
Cooling water temperature at portion two is set to 10-20 DEG C, and the time interval of the first water-spraying control and secondary cooling is set to 1-
The time intervals of 2min, the secondary cooling and three coolings are set to 9-15min, three coolings and four coolings when
Between be set to 2-4min.
Further, the translational speed of the round-link chain is 900-1100mm/min.
Further, the round-link chain is after preheating heater box heating, and its shoulder head temperature is 620-630 DEG C, its straight-arm
Portion's temperature is 690-710 DEG C；After austenitizing heater box heating, its shoulder head temperature is 940-950 DEG C, its straight-arm
Portion's temperature is 960-980 DEG C；After samming tempering heater box heating, its shoulder head temperature is 450-470 DEG C, its straight-arm
Portion's temperature is 290-320 DEG C；After differential temperature tempering heater box heating, its shoulder head temperature is 290-310 DEG C, its straight-arm
Portion's temperature is 490-500 DEG C.
The beneficial effects of the invention are as follows：
1st, the present invention is provided with quenching portion, tempering portion, cooling end one and cooling end two, can disposably complete round-link chain
Technology for Heating Processing, with the characteristics of integration degree is high, operating efficiency is high.
2nd, the present invention is provided with quenching controlled temperature cabinet, eliminates the temperature difference at the top of shoulder and straight-arm portion, it is ensured that each portion of round-link chain
Position temperature before quenching is uniform, composition is uniform, and uniform, tiny low-carbon lath martensite tissue is obtained after quenching, quenching is improved
Quality.
3rd, tempering controlled temperature cabinet adjacent in the present invention is sequentially connected with, and helps to reduce round-link chain and extraneous time of contact,
Avoid occurring heat transfer, cause heat to scatter and disappear.
4th, the present invention is provided with cooling end two, to carrying out rapid water-spraying control, cooling by quenching the round-link chain of controlled temperature cabinet
Portion two is connected the temperature of cooling water at cooling source, and the cooling end two less than cooling water at cooling end one respectively with cooling end one
Temperature, be favorably improved cooling quality.
5th, the present invention enters to the translational speed of round-link chain, heat time, temperature adjustment time, cool time and cooling interval
Row setting, it is ensured that round-link chain is sufficiently quenched or temper in each case, in terms of meeting round-link chain to hardness, toughness
It is required that.
6th, the present invention is provided with samming tempering heater box, tempering controlled temperature cabinet, it is ensured that setting temperature is obtained at the top of the shoulder of round-link chain
The abundant tempering of degree, helps to eliminate internal stress, and promoting to justify has higher wear-resistant and bearing capacity at the top of the shoulder of chain link.
7th, the present invention is provided with differential temperature tempering heater box, it is ensured that the straight-arm portion of round-link chain obtains higher temperature, has
Help improve the modeling for being located at straight-arm portion weld zone, toughness, prevent the corrosion-fatigue failure caused by friction.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the quenching nozzle structure schematic diagram of the present invention；
Fig. 3 is the heating induction coil structural representation of the present invention；
Fig. 4 is the ceramic thermal insulation structural representation of the present invention；
Fig. 5 is the round-link chain structural representation of the present invention.
In accompanying drawing：Quenching portion 1, tempering portion 2, cooling end 1, cooling end 24, quenching shower nozzle 41, connecting tube 42, through hole
43rd, perforate 44, preheating heater box 5, austenitizing heater box 6, quenching controlled temperature cabinet 7, samming tempering heater box 8, tempering controlled temperature cabinet
9th, differential temperature tempering heater box 10, active chain cable fairlead 11, driven chain cable fairlead 12, control unit 13, heating induction coil structure 14, casing
Shell 141, heating induction coil 142, insulation heat preservation layer 143, inner cylinder 144, thermal probe 145, ceramic thermal insulation structure 15, outside casing
Shell 151, heat preserving ceramic 152, heating element heater 153, stainless steel inner cylinder 154, K-type thermocouple 155, round-link chain 16, straight-arm portion 161,
162 at the top of shoulder；
Wherein, A, B, C, D are represented at the hardness test on round-link chain surface respectively.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
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 annealing device, including quenching portion 1, the tempering portion 2 set gradually, it is described
Cooling end 1 is provided with quenching portion 1, tempering portion 2, the Technology for Heating Processing of round-link chain, integrated journey can be disposably completed
Degree is high, and operating efficiency is high.
The quenching portion 1 is also disposed with preheating heater box before being provided with quenching controlled temperature cabinet 7, the quenching controlled temperature cabinet 7
5th, austenitizing heater box 6, when the round-link chain 16 is at the uniform velocity moved in preheating heater box 5, austenitizing heater box 6, by not
Disconnected heating, due to impewdance matching characteristic, during high temperature, the temperature of straight-arm portion 161 of round-link chain 16 is far below 162 temperature at the top of shoulder, temperature
Degree difference can produce influence to the tissue and performance after round-link chain quenching, add quenching controlled temperature cabinet 7, and its design temperature is 950-960
DEG C, promote the high temperature of straight-arm portion 161 to 162 cryogenic heat transfers at the top of shoulder, reach temperature equilibrium, eliminate temperature difference, it is ensured that annulus
Each position of chain temperature before quenching is uniform, composition uniform, and uniform, tiny low-carbon lath martensite tissue is obtained after quenching,
Improve quenching quality.
As shown in Figure 1 and Figure 2, cooling end 24 is provided with the quenching controlled temperature cabinet 7, the cooling end 24 includes being connected
The quenching shower nozzle 41 and connecting tube 42 connect, the quenching shower nozzle 41 is just set to quenching controlled temperature cabinet 7, and its surface is provided with perforate
44, it is internally provided with through hole 43, and the round-link chain 16 enters cooling end 1 through through hole 43, and the round-link chain 16 is through described
When quenching the outlet export of controlled temperature cabinet 7, from the perforate 44 to the spray cooling water of round-link chain 16, first water-spraying control is carried out, it is cold
But water flow velocity is 0.2-0.6m/s, and cooling water temperature is set to 10-20 DEG C, promotes the cooling velocity of the cooling end 24 to be more than
The critical cooling rate of round-link chain 16, in addition the cooling capacity of recirculated water be better than stationary water cooling capacity, promote the annulus
The inside of chain 16 is rapid to carry out martensite transfor mation, and the axis angle that the axis of the perforate 44 is exported with quenching controlled temperature cabinet 7 is
30-70 °, it is ensured that the cooling water sprayed from perforate 44 can converge to the surface of round-link chain 16, improve cooling effect.
After first water-spraying control, the round-link chain 16 enters cooling end 1 and carries out secondary cooling, and cooling water temperature is set
20-40 DEG C is set to, the cooling end 1 and cooling end 24 connect cooling water at cooling source, and the cooling end 24 respectively
The liquid level that temperature is less than cooling water at the temperature of cooling water at cooling end 1, the cooling end 24 is higher than cooling end 1
Locate the liquid level of cooling water, the time interval of the first water-spraying control and secondary cooling is set to 1-2min, helps to carry
The cooling quality of high cooling end 1 and cooling end 24, using the type of cooling of first strong cold rear weak cold, helps to obtain uniform, thin
Small low-carbon lath martensite tissue.
The driving section includes active chain cable fairlead 11 and driven chain cable fairlead 12, and the active chain cable fairlead 11 is arranged on heat treatment
In the end of device, the present embodiment, the active chain cable fairlead 11 is separately positioned on preheating heater box 1, differential temperature tempering heater box 10
Place, the driven chain cable fairlead 12 is arranged on inside cooling end 1, in the cooperation of the active chain cable fairlead 11 and driven chain cable fairlead 12
Under effect, the round-link chain 16 is at the uniform velocity moved with 900-1100mm/min speed, the control unit 13 respectively with quenching portion
1st, tempering portion 2, driving section connection.
Embodiment two：
As shown in Figure 1, shown in Figure 5, the tempering portion 2 is disposed with samming tempering heater box 8, at least one tempering controlled temperature cabinet
9th, differential temperature tempering heater box 10, the samming tempering heater box 8 ensures that the shoulder top 162 of round-link chain obtains the abundant of design temperature
Tempering, helps to eliminate internal stress, promotes the shoulder top 162 for justifying chain link to have higher wear-resistant and bearing capacity, described time
The design temperature of thermal transfer incubator 9 is 350-400 DEG C, between the samming is tempered heater box 8 and differential temperature tempering heater box 10 sequentially
4-6 tempering controlled temperature cabinet 9 is provided with, and along the direction of motion of round-link chain, adjacent tempering controlled temperature cabinet 9 is sequentially connected with, had
Help reduce round-link chain and extraneous time of contact, it is to avoid occur heat transfer, cause heat to scatter and disappear, along the motion side of round-link chain
To the design temperature of the tempering controlled temperature cabinet 9 increases successively, and the temperature difference of adjacent tempering controlled temperature cabinet 9 is 10-20 DEG C, is prolonged
The soaking time of long round-link chain, farthest eliminates the temperature difference at each position of round-link chain, and the round-link chain 16 is adjusted by tempering
After the temperature adjustment of incubator 9, three coolings are carried out, the pending round-link chain is after secondary cooling, its internal martensite and residual
Remaining austenite structure is unstable, and continuation changes, and the time interval of the secondary cooling and three coolings is set to 9-
15min, can effectively stablize interior tissue, reduce strain cracking tendency.
The differential temperature tempering heater box 10 ensures that the straight-arm portion 161 of round-link chain obtains higher temperature, the annulus
Chain 16 carries out four coolings, the time interval of three coolings and four coolings after differential temperature tempering heater box 10 is heated
2-4min is set to, modeling positioned at the weld zone of straight-arm portion 161, toughness is favorably improved, the corrosion fatigue caused by friction is prevented
Failure.
The translational speed of the round-link chain 16, heat time, temperature adjustment time, cool time and cooling interval are carried out
Preferably set, it is ensured that round-link chain is sufficiently quenched or temper in each case, in terms of meeting round-link chain to hardness, toughness
Requirement.
As Figure 1 and Figure 4, it is described quenching controlled temperature cabinet 7, tempering controlled temperature cabinet 9 inside be provided with ceramic thermal insulation structure 15,
The ecto-entad of ceramic thermal insulation structure 15 is disposed with cabinet shell 151, heat preserving ceramic 152 and stainless steel inner cylinder 154, institute
State ceramic thermal insulation structure 15 and select refractory ceramics, with good waterproof, heat insulation function, the heat preserving ceramic is internally provided with
Heating element heater 153, the heating element heater 153 selects resistance wire, to ensure the internal temperature of ceramic thermal insulation structure 15, the casing
K-type thermocouple 155 is provided between shell 151 and stainless steel inner cylinder 154.
As shown in Figure 1, Figure 3, the preheating heater box 5, austenitizing heater box 6, samming tempering heater box 8 and differential temperature are returned
Heating induction coil structure 14 is provided with inside fiery heater box 10, the ecto-entad of heating induction coil structure 14 is set successively
It is equipped with cabinet shell 141, heating induction coil 142, insulation heat preservation layer 143 and inner cylinder 144, the heating induction coil 142
Portion is passed through cooling water, and thermal probe 145 is provided between the inner cylinder 144 and cabinet shell 141, and the insulation heat preservation layer 143 is selected
With refractory mortar, its thickness is 15-25mm, and with good heat-insulated buffering, insulating effect, the heating induction coil 142 is set
It is set to intermediate frequency furnace induction coil.
The power of the preheating heater box 5 is 210-255kW, and the power of the austenitizing heater box 6 is 260-
320kW, the power of the samming tempering heater box 8 is 150-195kW, and the power of the differential temperature tempering heater box 10 is 110-
140kW。
Embodiment three：
In the present embodiment, the specification of the round-link chain 16 is Φ 38mm × 137mm, and the quantity of the tempering controlled temperature cabinet 9 is set
4 are set to, when being heat-treated to the round-link chain 16, is comprised the following steps：
(1) round-link chain 16 is connected with haulage chain, and the traction chain warp driving section is sequentially passed through into quenching portion 1 and returned
Fiery portion 2, starts the control unit 13, and the quenching controlled temperature cabinet 7 is preheated into 950 DEG C, and the tempering controlled temperature cabinet 9 is preheated successively
To 350 DEG C, 370 DEG C, 390 DEG C, 400 DEG C；
(2) under the active chain cable fairlead 11, the mating reaction of driven chain cable fairlead 12, the round-link chain 16 is in haulage chain
At the uniform velocity moved under draw；
(3) round-link chain 16 sequentially enters preheating heater box 5, austenitizing heater box 6 and heated, the heat time point
Not Wei 1.5min, afterwards enter quenching controlled temperature cabinet 7 carry out temperature adjustment, the temperature adjustment time be 1min；
(4) round-link chain 16 reaches the cooling end 24 after temperature adjustment is handled, and carries out first water-spraying control, cooling
Time is 2.5min, afterwards into the cooling end 1, carries out secondary cooling, cool time is 2.5min；
(5) round-link chain 16 is heated, during heating after secondary cooling into samming tempering heater box 8
Between be 1.5min, afterwards order enter it is described tempering controlled temperature cabinet 9 carry out temperature adjustment, the temperature adjustment time is 1.5min；
(6) round-link chain 16 is after the tempering temperature adjustment of controlled temperature cabinet 9, into the cooling end 1, carries out three coolings,
Cool time is 3min, is heated afterwards into differential temperature tempering heater box 10, the heat time is 1.5min；
(7) round-link chain 16 is again introduced into the cooling end 1, carried out after differential temperature tempering heater box 10 is heated
Four coolings, cool time is 2min, completes heat treatment step.
In the present embodiment, the power of the preheating heater box 5 is 210kW, and the power of the austenitizing heater box 6 is
260kW, the power of the samming tempering heater box 8 is 150kW, and the power of the differential temperature tempering heater box 10 is 110kW, described
The translational speed of round-link chain 16 is 900mm/min.
The cooling water temperature that cooling water temperature at the cooling end one is set at 20 DEG C, the cooling end two is set to
10 DEG C, cooling water flow velocity is 0.2m/s, and the time interval of the first water-spraying control and secondary cooling is set to 1min, described two
The time interval of secondary cooling and three coolings is set to 9min, and the time interval of three coolings and four coolings is set to
2min, the axis angle that the axis of the perforate 44 is exported with quenching controlled temperature cabinet 7 is 30 °.
In the present embodiment, the round-link chain 16 is after the preheating heater box 5 is heated, and 162 temperature are 620 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 690 DEG C；After the austenitizing heater box 6 heating, 162 temperature are 940 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 960 DEG C；After samming tempering heater box 8 is heated, 162 temperature are 450 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 290 DEG C；After differential temperature tempering heater box 10 is heated, 162 temperature are 290 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 490 DEG C.
Example IV：
In the present embodiment, repeated no more with the identical part of embodiment three, unlike：
The specification of the round-link chain 16 is Φ 42mm × 146mm, and the quantity of the tempering controlled temperature cabinet 9 is set to 5, described
Quenching controlled temperature cabinet 7 be preheated to 955 DEG C, by it is described tempering controlled temperature cabinet 9 be preheated to successively 350 DEG C, 365 DEG C, 380 DEG C, 390 DEG C, 400
℃。
The round-link chain 16 adds in preheating heater box 5, austenitizing heater box 6, samming tempering heater box 8, differential temperature tempering
When being heated in hot tank 10, the heat time is 2.5min；The temperature adjustment time in quenching controlled temperature cabinet 7 is 2min；
The temperature adjustment time in the tempering controlled temperature cabinet 9 is 2min；The first water-spraying control time is 3.5min, secondary cooling time
For 5.5min, three cool times are 4.5min, and four cool times are 4min；Cooling water temperature at the cooling end one is set
It is set to the cooling water temperature at 40 DEG C, the cooling end two and is set to 20 DEG C, cooling water flow velocity is 0.6m/s, the first water spray
The time interval of cooling and secondary cooling is set to 1.5min, and the secondary cooling and the time interval of three coolings are set to
15min, the time interval of three coolings and four coolings is set to 4min.
In the present embodiment, the power of the preheating heater box 5 is 255kW, and the power of the austenitizing heater box 6 is
320kW, the power of the samming tempering heater box 8 is 195kW, and the power of the differential temperature tempering heater box 10 is 140kW, described
The translational speed of round-link chain 16 is 1000mm/min, the axis wire clamp of the axis and the outlet of quenching controlled temperature cabinet 7 of the perforate 44
Angle is 70 °.
In the present embodiment, the round-link chain 16 is after the preheating heater box 5 is heated, and 162 temperature are 630 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 700 DEG C；After the austenitizing heater box 6 heating, 162 temperature are 950 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 980 DEG C；After samming tempering heater box 8 is heated, 162 temperature are 470 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 320 DEG C；After differential temperature tempering heater box 10 is heated, 162 temperature are 310 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 500 DEG C.
Embodiment five：
In the present embodiment, repeated no more with the identical part of embodiment three, unlike：
The specification of the round-link chain 16 is Φ 38mm × 146mm, and the quantity of the tempering controlled temperature cabinet 9 is set to 6, described
Quenching controlled temperature cabinet 7 be preheated to 960 DEG C, by it is described tempering controlled temperature cabinet 9 be preheated to successively 350 DEG C, 360 DEG C, 370 DEG C, 380 DEG C, 390
℃、400℃。
The round-link chain 16 adds in preheating heater box 5, austenitizing heater box 6, samming tempering heater box 8, differential temperature tempering
When being heated in hot tank 10, the heat time is 2min；The temperature adjustment time in quenching controlled temperature cabinet 7 is 1.5min；
The temperature adjustment time in the tempering controlled temperature cabinet 9 is 1.7min；The first water-spraying control time is 3min, secondary cooling time
For 4min, three cool times are 4min, and four cool times are that the cooling water temperature at 3min, the cooling end one is set to
30 DEG C, the cooling water temperature at the cooling end two is set to 15 DEG C, and cooling water flow velocity is 0.4m/s, the first water-spraying control
2min is set to the time interval of secondary cooling, the secondary cooling and three time intervals cooled down are set to 12min, institute
The time interval for stating three coolings and four coolings is set to 3min.
In the present embodiment, the power of the preheating heater box 5 is 232kW, and the power of the austenitizing heater box 6 is
290kW, the power of the samming tempering heater box 8 is 175kW, and the power of the differential temperature tempering heater box 10 is 130kW, described
The translational speed of round-link chain 16 is 1100mm/min, the axis wire clamp of the axis and the outlet of quenching controlled temperature cabinet 7 of the perforate 44
Angle is 50 °.
In the present embodiment, the round-link chain 16 is after the preheating heater box 5 is heated, and 162 temperature are 625 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 710 DEG C；After the austenitizing heater box 6 heating, 162 temperature are 945 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 970 DEG C；After samming tempering heater box 8 is heated, 162 temperature are 460 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 300 DEG C；After differential temperature tempering heater box 10 is heated, 162 temperature are 300 at the top of its shoulder
DEG C, its temperature of straight-arm portion 161 is 500 DEG C.
Contrast experiment one：
The round-link chain for taking the embodiment of the present invention three, example IV and embodiment five to handle respectively, be respectively labeled as sample one,
Sample two and sample three, hardness test is carried out to the three.
As shown in figure 5, taking A, B, C, D everywhere on round-link chain surface, a little one, point two, point three and point four are taken respectively at every place,
The point one is located at round-link chain surface, and the point two is located at away from the radius of round-link chain surface 1/4, and the point three is located at away from round-link chain
At the radius of surface 1/3, the point four is located at away from the radius of round-link chain surface 1/2, carries out hardness determination to position described above, obtains
Go out experimental data such as table 1：
Table 1：
Above-mentioned experiment is carried out in Shandong energy refitting southern Shandong equipment manufacturing Co., Ltd of group laboratory
By as above analysis of experimental data, in every place's test position, the surface of round-link chain and centre hardness are unanimous on the whole,
And the hardness of test position is evenly distributed everywhere.
Contrast experiment two：
Take after the sample one described in contrast experiment one clamps on testing machine, according to GB/T 12718-2009 regulation,
Then load is down to initial load to 725kN by the experiment load on of testing machine first, it is demarcated using micrometer and grows
Degree, by experiment load to be not more than 20N/mm per second2Loading velocity be loaded into 1450kN, demarcate its length using micrometer,
The elongation in the case where applying experiment load is calculated, labeled as δ1；Continue to apply load to sample one, untill fracture, record
The total elongation of breaking load and sample one, calculates disrumpent feelings percentage of total elongation, labeled as δ1'；
Using the above method, the elongation δ under the experiment load of sample two is calculated respectively2And disrumpent feelings percentage of total elongation δ2', meter
Calculate the elongation δ under the experiment load of sample three3And disrumpent feelings percentage of total elongation δ3', the experimental data drawn is as such as table 2：
Table 2：
| Elongation/% | Sample one | Sample two | Sample three |
| Test the elongation δ under 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 testing in Shandong energy refitting southern Shandong equipment manufacturing Co., Ltd of group laboratory
≤ 1.6%, the three's is broken for elongation under data analysis, the experiment load of the sample one, sample two and sample three
Disconnected percentage of total elongation >=12%, illustrate the round-link chain handled by round-link chain annealing device of the present invention, its hardness with
Toughness can be up to state standards.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (6)
1. a kind of round-link chain annealing device, it is characterised in that：Including quenching portion, the tempering portion set gradually, the quenching portion,
Cooling end one is provided with tempering portion, the quenching portion is also set successively before being provided with quenching controlled temperature cabinet, the quenching controlled temperature cabinet
It is equipped with preheating heater box, austenitizing heater box, the quenching controlled temperature cabinet and is provided with cooling end two, the cooling end two includes
The quenching shower nozzle and connecting tube being connected, the quenching shower nozzle are just set to quenching controlled temperature cabinet, and its surface is provided with perforate, in it
Portion is provided with through hole, and the cooling end one and cooling end two connect cooling source, axis and the quenching temperature adjustment of the perforate respectively
The axis angle of case outlet is 30-70 °；
The tempering portion is disposed with samming tempering heater box, at least one tempering controlled temperature cabinet, differential temperature tempering heater box, described
Be provided with ceramic thermal insulation structure inside quenching controlled temperature cabinet, tempering controlled temperature cabinet, the preheating heater box, austenitizing heater box,
Samming is tempered inside heater box and differential temperature tempering heater box and is disposed as heating induction coil structure；
Also include driving section and control unit, the control unit is connected with quenching portion, tempering portion, driving section respectively, the driving section
Including active chain cable fairlead and driven chain cable fairlead, the active chain cable fairlead is arranged on the end of annealing device, the driven guide chain
Wheel is arranged on inside cooling end one.
2. a kind of round-link chain annealing device according to claim 1, it is characterised in that：The quantity of the tempering controlled temperature cabinet
4-6 are set to, and along the direction of motion of round-link chain, adjacent tempering controlled temperature cabinet is sequentially connected with.
3. a kind of application method of round-link chain annealing device using as described in claim 1-2 any one, its feature exists
In：Comprise the following steps：
(1) round-link chain is connected with haulage chain, and the traction chain warp driving section is sequentially passed through into quenching portion and tempering portion, opened
The control unit is moved, the quenching controlled temperature cabinet is preheated to 950-960 DEG C, the tempering controlled temperature cabinet is preheated to 350-400 DEG C；
(2) under the active chain cable fairlead, the mating reaction of driven chain cable fairlead, the round-link chain is under the draw of haulage chain
At the uniform velocity move；
(3) round-link chain sequentially enters preheating heater box, austenitizing heater box and heated, and the heat time is respectively 1.5-
2.5min, enters quenching controlled temperature cabinet and carries out temperature adjustment, the temperature adjustment time is 1-2min afterwards；
(4) round-link chain by step (3) processing reaches the cooling end two, carries out first water-spraying control, and cool time is
2.5-3.5min, cooling water flow velocity is 0.2-0.6m/s, afterwards into the cooling end one, carries out secondary cooling, cool time
For 2.5-5.5min；
(5) round-link chain by step (4) processing enters samming tempering heater box, and the heat time is 1.5-2.5min, it
Order enters the tempering controlled temperature cabinet progress temperature adjustment afterwards, and the temperature adjustment time is 1.5-2min；
(6) round-link chain by step (5) processing enters the cooling end one, carries out three coolings, cool time is 3-
4.5min, enters differential temperature tempering heater box heating, the heat time is 1.5-2.5min afterwards；
(7) round-link chain by step (6) processing is again introduced into the cooling end one, carries out four coolings, cool time is 2-
4min, completes heat treatment step.
4. a kind of application method of round-link chain annealing device according to claim 3, it is characterised in that：Along round-link chain
The direction of motion, the design temperature of the tempering controlled temperature cabinet increases successively, and the temperature difference of adjacent tempering controlled temperature cabinet is 10-20
DEG C, the cooling water temperature that the cooling water temperature at the cooling end one is set at 20-40 DEG C, the cooling end two is set to
10-20 DEG C, the time interval of the first water-spraying control and secondary cooling is set to 1-2min, the secondary cooling and three times it is cold
But time interval is set to 9-15min, and the time interval of three coolings and four coolings is set to 2-4min.
5. a kind of application method of round-link chain annealing device according to claim 4, it is characterised in that：The round-link chain
Translational speed be 900-1100mm/min.
6. a kind of application method of round-link chain annealing device according to claim 5, it is characterised in that：The round-link chain
After preheating heater box heating, its shoulder head temperature is 620-630 DEG C, and its straight-arm portion temperature is 690-710 DEG C；By described
After the heating of austenitizing heater box, its shoulder head temperature is 940-950 DEG C, and its straight-arm portion temperature is 960-980 DEG C；By described
After samming tempering heater box heating, its shoulder head temperature is 450-470 DEG C, and its straight-arm portion temperature is 290-320 DEG C；By described
After differential temperature tempering heater box 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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| 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 |
| 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 |
| 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 |
| CN117625902B (en) * | 2024-01-15 | 2024-08-23 | 齐鲁工业大学(山东省科学院) | Automatic energy-saving device for loop chain heat treatment and application method thereof |
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| 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 |
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| 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 |
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