CN1304603C - Part heat treatment method for parts to be heat treated and apparatus thereof - Google Patents
Part heat treatment method for parts to be heat treated and apparatus thereof Download PDFInfo
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- CN1304603C CN1304603C CNB031523749A CN03152374A CN1304603C CN 1304603 C CN1304603 C CN 1304603C CN B031523749 A CNB031523749 A CN B031523749A CN 03152374 A CN03152374 A CN 03152374A CN 1304603 C CN1304603 C CN 1304603C
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Abstract
This member 1 to be heat-treated is subjected to heat treatment in only its specified portion 1a, and the heat treatment includes an induction-heating process 20P for induction-heating only the specified portion followed by a cooling process 30. Then, the above induction-heating process 20P comprises a first step heating 21, a heating stop 22 succeeding to the first step heating 21 and a second step heating 23 succeeding to the heating stop 22. Further, the partial heat treatment can be applied to partial quenching, and can be applied to partial tempering, and can be applied to both of the partial quenching and the partial tempering.
Description
Technical field
The present invention relates to the portion of hot treatment process and the device thereof of heat processing unit.
Heat processing unit is the crawler belt chain link such as engineering machinery, in this case, is roller roller tread portion by the heat treated part of part.But heat processing unit is not limited only to the crawler belt chain link of engineering machinery.
In addition, it is that incomplete quench is handled that portion of hot is handled, perhaps part temper, perhaps incomplete quench and part tempered any.
Background technology
The iron and steel parts that has is used by steel rolling or forging or former state ground, casting back, has been required that still rub resistance (hardness), intensity, flexible parts will heat-treat.Like this, heat-treat the parts of back use " heat processing unit ".
As representational heat processing unit, as shown in figure 12, the point of a knife (not having diagram) that uses on engineering machinery such as the grip-pad 2, chain link 1, pin 3, bearing shell 4 and the dozer that use on the engineering machinery such as hydraulic excavator and dozer and the snow removing machinery etc. is arranged.In addition, the physical structure that uses on the various industrial machines is a heat processing unit with the parts majority.
Because the crawler belt chain link is to use,, rub resistance, intensity and toughness have been required therefore as whole chain link under exacting terms.In addition, as with the roller roller tread 1a of portion (Figure 13, Figure 14) of the chain link 1 in the contact surface zone of the roller roller of the lower tray of engineering machinery (bogie wheel, do not have diagram), especially be required rub resistance.
Require characteristic in order to possess these, the crawler belt chain link is with 1. following～5. operation, creates according to 1.～5. process sequence.
1. will carry out forge hot by the starting material that medium carbon alloy steel forms, as the chain link starting material of chain link shape.
2. by the waste heat or the reheat of forge hot, will arrive Ac
3The raw-material integral body of chain link of the temperature that critical temperature is above is carried out chilling, is carried out quench treatment.
3. the whole chain link starting material after the quench treatment being carried out high tempering handles.
4. the raw-material roller roller of the chain link tread portion after only high tempering being handled carries out induction quenching and handles (being that incomplete quench is handled).
5. only the raw-material roller roller of chain link tread portion is carried out low-temperaturetempering by induction heating and handle (being the part temper), or whole chain link starting material are carried out temper in stove.
And, 4., the 5. front and back of operation, for other parts assemblings, carry out mechanical workout.
Therefore, be implemented 2. on the chain link starting material, the thermal treatment of fs 3. and 4., the thermal treatment in heat treated two stages of subordinate phase 5..The thermal treatment of fs is in order to give whole chain link intensity and flexible thermal treatment, and the thermal treatment of subordinate phase is in order to give the thermal treatment as the roller roller tread portion wear resistance of a chain link part.Like this, the heat treated reason of implementing subordinate phase is because of the position difference owing to chain link, and the mechanical characteristics difference that is required.At this, as the thermal treatment of fs, the thermal treatment that whole chain link starting material are carried out is called " complete heat treatment ", and as the thermal treatment of subordinate phase, the thermal treatment that the raw-material part of chain link is carried out is called " portion of hot processing ".
The portion of hot treatment process of the manufacturing process that the invention relates to above-mentioned chain link in 1.～5..Promptly the invention relates to following any one, promptly
(I) operation 4. is that incomplete quench operation and operation 5. are two operations of part tempering process, perhaps
(II) operation 4. is the incomplete quench operation, perhaps
(III) operation 5. is the part tempering process,
Handle (incomplete quench processing 4., part temper 5.) for the raw-material portion of hot of chain link, following existing method is arranged.
[incomplete quench processing]
A. whole chain link starting material are immersed in the method in the interior cooling fluid of cooling liquid bath.
B. in the cooling liquid bath, carry the chain link starting material on one side, on one side in air or in the liquid, with an injection sheath method (shower cooling, for example the spy opens clear 58-167727 communique) to the raw-material roller roller of chain link tread portion shower cooling liquid.
C. in air, by the highly compressed air, only to the method (cooling of high pressure hydrojet) of the raw-material roller roller of chain link tread portion shower cooling liquid.
[incomplete quench processing]
D.1 the induction heating method of operation (for example the spy opens clear 57-51583 communique)
E. heating means (for example the spy opens existing technical specification in the clear 57-51583 communique) in the stove
[patent documentation 1] spy opens clear 58-167727 communique
[patent documentation 2] spy opens clear 57-51583 communique
But existing portion of hot treatment process has following problem.
[problem of existing incomplete quench method]
In the method for A, though whole chain link starting material are permanently connected to cooling fluid, owing to there is not liquid-flow, so cooling power is low, and inhomogeneous cooling is even easily.Its result is easy to generate quality problems such as quenching hardness deficiency (being slack quenching), quenching hardness inhomogeneous (being soft spots), hardening crack.
In the method for B, in spouting of liquid,, be difficult therefore particularly to wanting refrigerative position shower cooling liquid stream, effectively cooling off because chain link moves in cooling fluid.In addition, resemble complex-shaped parts the chain link, be easy to generate quality problems such as inhomogeneous cooling is even, hardening crack.
In the method for C, because of needs high pressure spraying device, workpiece grounding line, large vol liquid tank, large-scale cover etc., so forming device maximizes, equipment making cost and equipment retain costs increase.
[problem of existing part tempering method]
In the method for D, the surface of specific part and the temperature head of core increase, and are difficult to whole specific part with the uniform temperature heating.
In the method for E, because heat-up time is long, so tempering process becomes bottleneck, and continuous production point-blank is very difficult.
The purpose of this invention is to provide the heat processing unit that can solve the heat treated the problems referred to above of more than one existing part the portion of hot treatment process (incomplete quench method or part tempering method or incomplete quench method and part tempering method, more than in any one) and the device.
As described below more specifically.
First purpose of the present invention provides in the heat treated heating process of part, can use the heating of short period of time, specific part is heated to the portion of hot treatment process and the device thereof of the heat processing unit of uniform temperature.
Second purpose of the present invention, provide in the heat treated refrigerating work procedure of part, can prevent the heat treatment hardness deficiency, heat treatment hardness is inhomogeneous and quality problems such as heat treatment crack, and can reduce portion of hot treatment process and device thereof with the heat processing unit of equipment cost related.
The 3rd purpose of the present invention, provide in the heat treated heating process of part, can use the heating of short period of time, specific part is heated to uniform temperature, in the heat treated refrigerating work procedure of part, can prevent the heat treatment hardness deficiency, heat treatment hardness is inhomogeneous and quality problems such as heat treatment crack, and can reduce portion of hot treatment process and device thereof with the heat processing unit of equipment cost related.
Summary of the invention
By following the present invention, can reach the above object.
(1) a kind of portion of hot treatment process of heat processing unit, it is the portion of hot treatment process of only specific part of heat processing unit being heat-treated, above-mentioned thermal treatment only comprises carries out the induction heating operation of induction heating and the refrigerating work procedure that carries out subsequently to above-mentioned specific part, and above-mentioned induction heating operation comprises the heating of heating, the intermittence of the heating after the heating of this fs and this heating subordinate phase afterwards at intermittence of fs.
(2) as the portion of hot treatment process of (1) described heat processing unit, the heating of above-mentioned fs add thermal output be configured to above-mentioned subordinate phase heating add that thermal output equates or than its height.
(3) as the portion of hot treatment process of (1) described heat processing unit, adding of the specific part of above-mentioned heat processing unit pined for, and above-mentioned heat processing unit is fixed.
(4) as the portion of hot treatment process of (1) described heat processing unit, a heater coil heats a heat processing unit.
(5), use and divide other heater coil to carry out the heating of fs and the heating of subordinate phase as the portion of hot treatment process of (4) described heat processing unit.
(6) as the portion of hot treatment process of (5) described heat processing unit, the heater coil that carries out above-mentioned fs heating has different shape with the heater coil that carries out above-mentioned subordinate phase heating.
(7) as the portion of hot treatment process of (5) described heat processing unit, the heater coil that carries out above-mentioned fs heating is of similar shape with the heater coil that carries out above-mentioned subordinate phase heating.
(8), use same heater coil to carry out the heating of above-mentioned fs and the heating of above-mentioned subordinate phase as the portion of hot treatment process of (4) described heat processing unit.
(9) as the portion of hot treatment process of (1) described heat processing unit, a heater coil heats two heat processing units.
(10), in the above-mentioned refrigerating work procedure, be immersed on the prescribed position in the cooling fluid in the cooling tank above-mentioned whole heat processing unit static as the portion of hot treatment process of (1) described heat processing unit.
(11) as the portion of hot treatment process of (1) described heat processing unit, in the above-mentioned refrigerating work procedure, will from injection sheath, be ejected on the above-mentioned specific part by effusive cooling liquid flowing.
(12) as the portion of hot treatment process of (1) described heat processing unit, above-mentioned heat processing unit is the crawler belt chain link.
(13) as the portion of hot treatment process of (12) described heat processing unit, above-mentioned specific part is the roller roller tread portion of above-mentioned chain link.
(14) as the portion of hot treatment process of (1) described heat processing unit, above-mentioned thermal treatment is that incomplete quench is handled.
(15) as the portion of hot treatment process of (1) described heat processing unit, above-mentioned thermal treatment is the part temper.
(16) as the portion of hot treatment process of (1) described heat processing unit, above-mentioned thermal treatment is that incomplete quench is handled and the part temper.
(17) a kind of portion of hot treatment unit of heat processing unit, it is the portion of hot treatment unit of only specific part of heat processing unit being heat-treated, it is characterized in that, only comprise above-mentioned specific part carried out the induction heating device of induction heating and the heated heat processing unit of above-mentioned specific part is carried out the refrigerative refrigerating unit, above-mentioned induction heating device have heating according to the fs, heating intermittently, the more than one in sequence heater coil of the heating of subordinate phase.
(18) as the portion of hot treatment unit of (17) described heat processing unit, the heating of above-mentioned fs add thermal output can be configured to above-mentioned subordinate phase heating add that thermal output equates or on it.
(19) as the portion of hot treatment unit of (17) described heat processing unit, adding of the specific part of above-mentioned heat processing unit pined for, and has above-mentioned heat processing unit fixed device for fastening.
(20) as the portion of hot treatment unit of (17) described heat processing unit, a heater coil heats a heat processing unit.
(21) as the portion of hot treatment unit of (20) described heat processing unit, carrying out the heater coil of fs heating and carrying out subordinate phase heating heater coil is other heater coil of branch.
(22) as the portion of hot treatment unit of (21) described heat processing unit, the heater coil that carries out above-mentioned fs heating has different shape with the heater coil that carries out above-mentioned subordinate phase heating.
(23) as the portion of hot treatment unit of (21) described heat processing unit, the heater coil that carries out above-mentioned fs heating is of similar shape with the heater coil that carries out above-mentioned subordinate phase heating.
(24) as the portion of hot treatment unit of (20) described heat processing unit, it is same carrying out the heater coil of above-mentioned fs heating and the heater coil of above-mentioned subordinate phase heating.
(25) as the portion of hot treatment unit of (17) described heat processing unit, a heater coil heats two heat processing units.
(26) as the portion of hot treatment unit of (17) described heat processing unit, above-mentioned refrigerating unit has the above-mentioned heat processing unit that will be transferred and is immersed in immobilized roller conveyor on the prescribed position in the cooling fluid in the cooling tank.
(27) as the portion of hot treatment unit of (17) described heat processing unit, above-mentioned refrigerating unit has effusive cooling liquid flowing is ejected into injection sheath on the above-mentioned specific part.
(28) as the portion of hot treatment unit of (17) described heat processing unit, above-mentioned heat processing unit is the crawler belt chain link.
(29) as the portion of hot treatment unit of (28) described heat processing unit, above-mentioned specific part is the roller roller tread portion of above-mentioned chain link.
(30) as the portion of hot treatment unit of (17) described heat processing unit, above-mentioned thermal treatment is that incomplete quench is handled.
(31) as the portion of hot treatment unit of (17) described heat processing unit, above-mentioned thermal treatment is the part temper.
(32) as the portion of hot treatment unit of (17) described heat processing unit, above-mentioned thermal treatment is that incomplete quench is handled and the part temper.
In the portion of hot treatment process of above-mentioned (1) and the portion of hot treatment unit of above-mentioned (17), in heating process, induction heating carries out with the heating in two stages, be provided with the heating intermittent time between the heating of fs and the heating of subordinate phase, therefore, because the heating of fs is conducted heat to core at the lip-deep heat of specific part partially, the surface reduces with the temperature head of core, can make the specific part of whole heat processing unit be heated to uniform temperature.
In the portion of hot treatment process of above-mentioned (2) and the portion of hot treatment unit of above-mentioned (18), because the heating of subordinate phase is heating identical with the heating of fs or that export than its lowland, therefore, the surface reduces more with the temperature head of core, its result can make the specific part of whole heat processing unit be heated to uniform temperature.
In the portion of hot treatment process of above-mentioned (3) and the portion of hot treatment unit of above-mentioned (19), adding of specific part at heat processing unit pines for, because the stationary heat processing element, so heat processing unit is unshift to heater coil, specific part can be heated to the temperature of regulation in the degree of depth of regulation.
In the portion of hot treatment unit of the portion of hot treatment process of above-mentioned (4)～(7) and above-mentioned (20)～(23), with heater coil (first heater coil) heating of workpiece with the fs heating, in the heating intermittently, workpiece is delivered to the heater coil (second heater coil) of subordinate phase heating, with the second heater coil heated parts, during the second heater coil heated parts, next workpiece first heater coil can be able to be boosted productivity.
In the portion of hot treatment process of above-mentioned (8) and the portion of hot treatment unit of above-mentioned (24), owing to carry out the heating of fs, the heating of heating intermittence, subordinate phase with same heater coil, so the quantity that can cut down heater coil, its result can cut down the manufacturing cost of heater coil.
In the portion of hot treatment process of above-mentioned (9) and the portion of hot treatment unit of above-mentioned (25), with the upstream portion heating of workpiece at a heater coil, in the heating intermittently workpiece is delivered to the downstream portion of an above-mentioned heater coil, downstream portion heated parts at heater coil, during the downstream portion heated parts of heater coil, next workpiece can be heated at the upstream portion of heater coil, the productivity multiplication can be made.
In the portion of hot treatment process of above-mentioned (10) and the portion of hot treatment unit of above-mentioned (26), especially in refrigerating work procedure, owing to static on the prescribed position in the cooling fluid that whole heat processing unit is immersed in the cooling tank, specific part shower cooling liquid can be aimed at, heat treated quality can be improved.In addition, on the throughput direction of workpiece, thermal treatment unit can miniaturization, can reduce and the equipment cost related.
In the portion of hot treatment process of above-mentioned (11) and the portion of hot treatment unit of above-mentioned (27), in refrigerating work procedure,, can guarantee sufficient cooling power especially owing to spray effusive cooling liquid flowing from injection sheath to specific part, and can make cooling evenly, improve heat treated quality.
In the portion of hot treatment unit of the portion of hot treatment process of above-mentioned (12), (13) and above-mentioned (28), (29), the present invention is applicable to the roller roller tread portion of crawler belt with chain link, can improve mechanical quality.
In the portion of hot treatment unit of the portion of hot treatment process of above-mentioned (14)～(16) and above-mentioned (30)～(32), thermal treatment can be that incomplete quench is handled, and also can be the part temper, also can be that incomplete quench is handled and the part temper.
Description of drawings
Fig. 1 is the process picture sheet of the portion of hot treatment process of heat processing unit of the present invention.
Fig. 2 is the process picture sheet of the portion of hot treatment process with heat processing unit of the present invention when being applicable to the part temper.
Fig. 3 is that the portion of hot treatment process with heat processing unit of the present invention is applicable to the process picture sheet when incomplete quench is handled.
Fig. 4 is that the portion of hot treatment process with heat processing unit of the present invention is applicable to that incomplete quench is handled and the process picture sheet during the part temper.
Fig. 5 is in the portion of hot treatment process and device thereof of heat processing unit of the present invention, the layout diagram (side-view) of the heater coil during with heat processing unit of a heater coil heating.
Fig. 6 is in the portion of hot treatment process and device thereof of heat processing unit of the present invention, the layout diagram (side-view) of the heater coil when heating two heat processing units with a long heater coil.
Fig. 7 is in the portion of hot treatment process and device thereof of heat processing unit of the present invention, about the sectional view of the heater coil of fs of tempering portion heating.
Fig. 8 is in the portion of hot treatment process and device thereof of heat processing unit of the present invention, about the sectional view of the heater coil of the subordinate phase of tempering portion heating.
Fig. 9 be heat processing unit of the present invention the portion of hot treatment process and the device in, the vertical view of device for fastening and heater coil (from figure).
Figure 10 is the portion of hot treatment process of heat processing unit of the present invention and the sectional view about cooling (what scheme expression is the cooling situation of quenching) part of device thereof.
Figure 11 is the part drawing in side sectional elevation of Figure 10.
Figure 12 is the stereographic map of a part of the crawler belt of engineering machinery.
Figure 13 is among Figure 12, the front view of chain link.
Figure 14 is among Figure 12, the side-view of chain link.
Embodiment
Following with reference to Fig. 1～Figure 14 (Figure 12～Figure 14 uses jointly with existing technical specification), describe with regard to the portion of hot treatment process and the device thereof of heat processing unit of the present invention.
As heat processing unit 1, be example with the crawler belt chain link of engineering machinery.But heat processing unit is not limited only to the crawler belt chain link of engineering machinery.And heat processing unit 1 is the crawler belt of engineering machinery when using chain link, and being implemented heat treated specific part 1a is roller roller tread portion.
At first, the portion of hot treatment process with regard to heat processing unit of the present invention describes.
As shown in Figure 1, the portion of hot treatment process of heat processing unit of the present invention is, only the portion of hot treatment process that the specific part 1a of heat processing unit 1 is heat-treated.
The portion of hot treatment process of heat processing unit of the present invention comprises that only the specific part 1a to heat processing unit 1 carries out the induction heating operation 20 of induction heating and the refrigerating work procedure 30 that carries out afterwards.In the induction heating, only specific part 1a is carried out the heating of locality by high frequency induction current.
In the induction heating operation 20, induction heating operation of the present invention is enclosed symbol 20P, existing induction heating operation is enclosed symbol 20C.
In the heating 21 of fs, the specific part 1a of heat processing unit 1 is heated rapidly, make it to be raised to haply the temperature of regulation.After the heating of fs heating 21 finishes, be higher than temperature away from the core of the specific part 1a of heater coil 11 near the Heating temperature of the near surface of the specific part 1a of the heat processing unit 1 of heater coil 11.Promptly after the heating of fs heating 21 finishes, the distribution (temperature inequality) of bigger temperature head is arranged on the heat processing unit 1, even on specific part 1a, surface element and core have temperature head.
Next, heating between the heating 23 of the heating 21 of fs and subordinate phase is intermittently in (the heat radiation time) 22, to air, dispel the heat and from the thermal conduction of the surface element of specific part 1a by near surface to the core of specific part 1a from specific part 1a, can reduce the temperature inequality on the specific part 1a, make specific part 1a evenly heating.
And, in the heating 23 of subordinate phase, compare with the heating of fs heating 21, it is identical or low to add thermal output, and the shape of heater coil 11 is also made the shape of easy evenly heating, can make the specific part 1a evenly heating more of heat processing unit 1.
Heating by two stages and between the heat radiation time, existing temperature inequality almost disappears the steady quality of finished products such as quenching hardness and tempered-hardness.In addition, also shortened 30～60 seconds the heat-up time of (fs heating and subordinate phase heating difference) in each stage, and heating has intermittently also been shortened 5～15 seconds, does not need to resemble 3～4 hours long processing of needs by the tempering of stove heating.
As shown in Figure 9, the adding of specific part 1a of heat processing unit 1, pine for, by device for fastening 12 stationary heat processing element 1.And, adding and pine for, heat processing unit 1 is not transferred but immobilized.By tightening up, load coil (also being known as heater coil simply) 11 is fixed with the position relation of heat processing unit 1, can carry out the stable heating of specific part 1a.
In the induction heating, a heater coil 11 can heat a heat processing unit 1 (Fig. 5), and with heater coil 11 lengthenings, a heater coil 11 also can heat two heat processing units 1 (Fig. 6) in advance.
During heat processing unit 1 of heater coil 11 heating, the heating 21 of fs and the heating 23 of subordinate phase can be used different heater coil 11.At this moment, heater coil 11 is two covers (Fig. 5).
When different heater coils 11 is used in the heating 21 of fs and the heating of subordinate phase 23, the shape of the heater coil 11 (Fig. 7) that the heating 21 of fs is used can be different with the heater coil 11 (Fig. 8) that the heating 23 of subordinate phase is used, and perhaps the shape of the shape of the heater coil 11 that uses of the heating 21 of the fs heater coil 11 that also can use with the heating 23 of subordinate phase is identical.In this case, conveying (move) time of heat processing unit 1 from the heater coil 11 (Fig. 7) of fs heating 21 to the heater coil 11 of subordinate phase heating 23 is become heat the intermittent time (heat radiation time) 22.
During heat processing unit 1 of heater coil 11 heating, the heating 21 of fs and the heating 23 of subordinate phase can use same (single) heater coil 11 to carry out.At this moment, heater coil 11 is covers.
When heater coil 11 is a cover, at hardware aspect, set the fs heating respectively and heated the thermal output that adds that adds thermal output, subordinate phase with timer, subordinate phase with timer and fs with timer, naturally cooling, aspect software with the specified time, make it to turn round respectively in order.But this method only is fit to obtain with same heater coil the situation of evenly heating.
During heater coil 11 two heat processing units 1 of heating (Fig. 6), in the upstream portion 11a of a heater coil 11 heat hot processing element 1, heat in intermittence 22, heat processing unit 1 is transported to the downstream portion 11b of heater coil 11 from the upstream portion 11a of heater coil 11, in the downstream portion 11b of heater coil 11 heat hot processing element 1.Certainly, in this case, the fs add thermal output and subordinate phase to add thermal output identical.And the heat-up time of fs is also identical with the heat-up time of subordinate phase.In addition, aspect hardware aspect, software, in the heating intermittently, the cut while of heating power supply, device for fastening 12 is disengaged, heat processing unit 1 begins to move to the downstream portion 11b of coil 11 from the upstream portion 11a of coil 11, when heat processing unit 1 arrived the prescribed position of downstream portion 11b of coil 11, device for fastening 12 started, and heat processing unit 1 was fixed on the prescribed position of downstream portion 11b of coil 11, and the connection heating power supply makes heating 23 beginnings of subordinate phase.By such operation, when the downstream portion 11b of heater coil 11 heat hot processing element 1, can heat next heat processing unit 1 at the upstream portion 11a of heater coil 11, productivity is doubled and redoubled.The promptly interior at one time heat processing unit 1 that can handle twice.
In the refrigerating work procedure 30, especially (also go for portion of hot handle be the situation of part temper) handled and to be under the incomplete quench situation about handling to portion of hot, as Figure 10, shown in Figure 11, it will in heating process 20 the sensed whole heat processing unit 1 that is heated to more than the specified temperature of specific part 1a, be immersed on the prescribed position in the cooling fluid 6 in the cooling liquid bath 5, make it under the immobilized state, spray effusive cooling liquid flowing 8 from the jet hole of injection sheath 7 to specific part 1a, make it cooling.
The cooling fluid of using as quench treatment has water, water-soluble quenching liquid, wet goods, can use any cooling fluid.Consider from cost and Working environment, preferably make water.
Utilize the cooling of dipping and liquid stream, when can guaranteeing sufficient speed of cooling, guarantee uniform cooling.Owing to fully guarantee speed of cooling, can obtain necessary quality (quenching hardness, tempered-hardness etc.), in addition,, can prevent hardening crack owing to make speed of cooling even.In addition owing to heat processing unit 1 is immersed on the prescribed position in the cooling fluid 6 in the cooling liquid bath 5 cool off, the method of cooling that moves in the cooling liquid bath during with heat processing unit 1 cooling is compared, owing to there be not the interference of injection sheath 7 with heat processing unit 1, can shorten the interval of the jet hole and the heat processing unit 1 of injection sheath 7, flowing of spray liquid flow can not weaken, the liquid stream of enough speed can be sprayed,, therefore necessary quality can be obtained owing to can guarantee high speed of cooling.In addition, owing to make heat processing unit 1 static the cooling, the method of cooling that moves in the cooling liquid bath during with heat processing unit 1 cooling is compared, and has shortened the length of the throughput direction of the heat processing unit 1 that cools off liquid bath 5, has reduced equipment making expense, equipment operation cost.
Have fs of the present invention heating 21, heating intermittently the portion of hot of the present invention of the heating process 20P of 22, second two-stage heating 23 handle and go for incomplete quench and handle (Fig. 3) or be applicable to part temper (Fig. 2) or be applicable to that incomplete quench handles and part temper (Fig. 4).
The portion of hot treatment process of the present invention of Fig. 2 (when part heating 20P of the present invention is applicable to the part heating of temper) has incomplete quench operation 100 and part tempering process 200.
Incomplete quench operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20C of the above temperature of critical temperature and refrigerating work procedure 30, this refrigerating work procedure 30 be only with specific part 1a induction heating to Ac
3The whole heat processing unit 1 of the above temperature of critical temperature is immersed on the prescribed position in the cooling fluid 6 in the cooling liquid bath 5, makes it under the immobilized state, sprays effusive cooling liquid flowing 8 from the jet hole of injection sheath 7 to specific part 1a.
The portion of hot treatment process of the present invention of Fig. 3 (when part heating 20P of the present invention is applicable to the part heating of quench treatment) has incomplete quench operation 100 and part tempering process 200.
Incomplete quench operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20P of the above temperature of critical temperature and refrigerating work procedure 30, this refrigerating work procedure 30 be only with the specific part induction heating to Ac
3The whole heat processing unit 1 of the above temperature of critical temperature is immersed on the prescribed position in the cooling fluid 6 in the cooling liquid bath 5, makes it under the immobilized state, sprays effusive cooling liquid flowing 8 from the jet hole of injection sheath 7 to specific part 1a.The induction heating operation 20P of this incomplete quench operation have the fs heating 21 and, intermittently intermittently 22 afterwards the heating 23 of subordinate phase of (heat radiation time) 22 and this heating of the heating after the heating 21 of fs.
The portion of hot treatment process of the present invention of Fig. 4 (part of the present invention heating 20P is applicable to when the part of the part heating of quench treatment and temper heats both) has incomplete quench operation 100 and part tempering process 200.
Incomplete quench operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20P of the above temperature of critical temperature and refrigerating work procedure 30, this refrigerating work procedure 30 be only with specific part 1a induction heating to Ac
3The whole heat processing unit 1 of the above temperature of critical temperature is immersed on the prescribed position in the cooling fluid 6 in the cooling liquid bath 5, makes it under the immobilized state, sprays effusive cooling liquid flowing 8 from the jet hole of injection sheath 7 to specific part 1a.The induction heating operation 20P of this part tempering process have the fs heating 21 and, intermittently intermittently 22 afterwards the heating 23 of subordinate phase of (heat radiation time) 22 and this heating of the heating after the heating 21 of fs.
Below with reference to Fig. 5～Figure 14, the portion of hot treatment unit of the present invention of just implementing above-mentioned portion of hot treatment process describes.
Portion of hot treatment unit of the present invention, be the portion of hot treatment unit of only the specific part 1a of heat processing unit 1 being heat-treated, only comprise specific part 1a is carried out the induction heating device (comprising load coil 11) of induction heating and the heated heat processing unit 1 of specific part 1a is carried out refrigerative refrigerating unit 5～10.Induction heating device have heating 21 according to the fs, heating intermittently 22, the more than one in sequence heater coil 11 of the heating 23 of subordinate phase.
Fs heating 21 add thermal output can be configured to subordinate phase heating 23 add that thermal output equates or on it.
The portion of hot treatment unit was pined in the adding of specific part 1a of heat processing unit 1, had heat processing unit 1 fixed device for fastening 12.
A heater coil 11 can heat a heat processing unit 1 (Fig. 5).
When a heater coil 11 can heat a heat processing unit 1, the heater coil 11 that carries out fs heating 21 can be other heater coil of branch with the heater coil 11 that carries out subordinate phase heating 23, also can be same (single) heater coil 11.
When the heater coil 11 that carries out the heater coil 11 of fs heating 21 and carry out subordinate phase heating 23 is other heater coil of branch, the heater coil 11 that carries out fs heating 21 can have different shape with the heater coil 11 that carries out subordinate phase heating 23, also can be of similar shape.
A heater coil 11 also can heat two heat processing units 1 (Fig. 6).
Refrigerating unit has the heat processing unit 1 that will be transferred and is immersed on the prescribed position in the cooling fluid 6 in the cooling tank 5 and makes it immobilized roller conveyor 10.
Refrigerating unit has the injection sheath 7 that effusive cooling liquid flowing 8 is ejected into the specific part 1a of heat processing unit 1.
It can be that incomplete quench is handled that portion of hot is handled, and also can be the part temper, also can be that incomplete quench is handled and the part temper.
Portion of hot treatment unit according to the portion of hot treatment process and the claim 17 of claim 1, in heating process, induction heating carries out with the heating in two stages, between the heating of the heating of fs and subordinate phase, be provided with the heating intermittent time, therefore, can make the specific part of whole heat processing unit be heated to uniform temperature.
Portion of hot treatment unit according to the portion of hot treatment process and the claim 18 of claim 2, because the heating of subordinate phase is identical with the heating of fs or than the heating of its low output, therefore, can make the specific part of whole heat processing unit be heated to uniform temperature.
According to the portion of hot treatment unit of the portion of hot treatment process and the claim 19 of claim 3, owing to pine for adding, therefore the stationary heat processing element, can be heated to specific part the temperature of regulation on the degree of depth of regulation, improve the quality of heat processing unit.
According to the portion of hot treatment unit of the portion of hot treatment process and the claim 20～23 of claim 4～7, can boost productivity.
The portion of hot treatment process according to Claim 8 and the portion of hot treatment unit of claim 24, the quantity that can cut down heater coil, its result can cut down the manufacturing cost of heater coil.
According to the portion of hot treatment unit of the portion of hot treatment process and the claim 25 of claim 9, can make the productivity multiplication.
Portion of hot treatment unit according to the portion of hot treatment process and the claim 26 of claim 10, in refrigerating work procedure, owing to static on the prescribed position in the cooling fluid that whole heat processing unit is immersed in the cooling tank, therefore can aim at specific part and spray, can improve heat treated quality.In addition, on the throughput direction of workpiece, thermal treatment unit can miniaturization, can reduce and the equipment cost related.
Portion of hot treatment unit according to the portion of hot treatment process and the claim 27 of claim 11, especially in the quench cooled operation, owing to spray effusive cooling liquid flowing from injection sheath, it is hereby ensured sufficient cooling power, and can make cooling evenly to specific part.
According to claim 12,13 portion of hot treatment process and claim 28,29 portion of hot treatment unit, the present invention is applicable to the roller roller tread of crawler belt with chain link, can improve mechanical quality.
According to the portion of hot treatment unit of the portion of hot treatment process and the claim 30～32 of claim 14～16, thermal treatment can be incomplete quench, also can be the part tempering, also can be incomplete quench and part tempering.
Claims (28)
1. the portion of hot treatment process of a heat processing unit, it is the portion of hot treatment process of only specific part of heat processing unit being carried out incomplete quench processing and part temper, it is characterized in that, above-mentioned thermal treatment only comprises carries out the induction heating operation of induction heating and the refrigerating work procedure that carries out subsequently to above-mentioned specific part, and above-mentioned induction heating operation comprises the heating of heating, the intermittence of the heating after the heating of this fs and this heating subordinate phase afterwards at intermittence of fs.
2. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, the heating of above-mentioned fs add thermal output be configured to above-mentioned subordinate phase heating add that thermal output equates or than its height.
3. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, adding of the specific part of above-mentioned heat processing unit pined for, and above-mentioned heat processing unit is fixed.
4. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, heat processing unit of a heater coil heating.
5. the portion of hot treatment process of heat processing unit as claimed in claim 4 is characterized in that, uses and divides other heater coil, carries out the heating of fs and the heating of subordinate phase.
6. the portion of hot treatment process of heat processing unit as claimed in claim 5 is characterized in that, the heater coil that carries out above-mentioned fs heating has different shape with the heater coil that carries out above-mentioned subordinate phase heating.
7. the portion of hot treatment process of heat processing unit as claimed in claim 5 is characterized in that, the heater coil that carries out above-mentioned fs heating is of similar shape with the heater coil that carries out above-mentioned subordinate phase heating.
8. the portion of hot treatment process of heat processing unit as claimed in claim 4 is characterized in that, uses same heater coil to carry out the heating of above-mentioned fs and the heating of above-mentioned subordinate phase.
9. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, two heat processing units of a heater coil heating.
10. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, in above-mentioned refrigerating work procedure, above-mentioned whole heat processing unit is immersed on the prescribed position in the cooling fluid in the cooling tank makes it static.
11. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, in above-mentioned refrigerating work procedure, will be ejected on the above-mentioned specific part by effusive cooling liquid flowing from injection sheath.
12. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, above-mentioned heat processing unit is the crawler belt chain link.
13. the portion of hot treatment process of heat processing unit as claimed in claim 12 is characterized in that, above-mentioned specific part is the roller roller tread portion of above-mentioned chain link.
14. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, above-mentioned thermal treatment is that incomplete quench is handled.
15. the portion of hot treatment process of heat processing unit as claimed in claim 1 is characterized in that, above-mentioned thermal treatment is the part temper.
16. the portion of hot treatment unit of a heat processing unit, it is the portion of hot treatment unit that only specific part of heat processing unit is carried out incomplete quench processing and part temper, it is characterized in that, only comprise above-mentioned specific part carried out the induction heating device of induction heating and the heated heat processing unit of above-mentioned specific part is carried out the refrigerative refrigerating unit, above-mentioned induction heating device have heating according to the fs, heating intermittently, the more than one heater coil that heats of the order of the heating of subordinate phase.
17. the portion of hot treatment unit of heat processing unit as claimed in claim 16 is characterized in that, the heating of above-mentioned fs add thermal output be configured to above-mentioned subordinate phase heating add that thermal output equates or on it.
18. the portion of hot treatment unit of heat processing unit as claimed in claim 16 is characterized in that adding of the specific part of above-mentioned heat processing unit pined for, and has above-mentioned heat processing unit fixed device for fastening.
19. the portion of hot treatment unit of heat processing unit as claimed in claim 16 is characterized in that, heat processing unit of a heater coil heating.
20. the portion of hot treatment unit of heat processing unit as claimed in claim 19 is characterized in that, carrying out the heater coil of fs heating and carrying out subordinate phase heating heater coil is other heater coil of branch.
21. the portion of hot treatment unit of heat processing unit as claimed in claim 20 is characterized in that, the heater coil that carries out above-mentioned fs heating has different shape with the heater coil that carries out above-mentioned subordinate phase heating.
22. the portion of hot treatment unit of heat processing unit as claimed in claim 20 is characterized in that, the heater coil that carries out above-mentioned fs heating is of similar shape with the heater coil that carries out above-mentioned subordinate phase heating.
23. the portion of hot treatment unit of heat processing unit as claimed in claim 19 is characterized in that, it is same carrying out the heater coil of above-mentioned fs heating and the heater coil of above-mentioned subordinate phase heating.
24. the portion of hot treatment unit of heat processing unit as claimed in claim 16 is characterized in that, two heat processing units of a heater coil heating.
25. the portion of hot treatment unit of heat processing unit as claimed in claim 16 is characterized in that, above-mentioned refrigerating unit has the above-mentioned heat processing unit that will be transferred and is immersed in immobilized roller conveyor on the prescribed position in the cooling fluid in the cooling tank.
26. the portion of hot treatment unit of heat processing unit as claimed in claim 16 is characterized in that, above-mentioned refrigerating unit has effusive cooling fluid is ejected into injection sheath on the above-mentioned specific part.
27. the portion of hot treatment unit of heat processing unit as claimed in claim 16 is characterized in that, above-mentioned heat processing unit is the crawler belt chain link.
28. the portion of hot treatment unit of heat processing unit as claimed in claim 27 is characterized in that, above-mentioned specific part is the roller roller tread portion of above-mentioned chain link.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP337074/2002 | 2002-11-20 | ||
| JP2002337074 | 2002-11-20 | ||
| JP2003154480A JP4169635B2 (en) | 2002-11-20 | 2003-05-30 | Method of partial heat treatment of heat treatment member |
| JP154480/2003 | 2003-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1502707A CN1502707A (en) | 2004-06-09 |
| CN1304603C true CN1304603C (en) | 2007-03-14 |
Family
ID=32910805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031523749A Expired - Lifetime CN1304603C (en) | 2002-11-20 | 2003-07-31 | Part heat treatment method for parts to be heat treated and apparatus thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4169635B2 (en) |
| CN (1) | CN1304603C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109804094A (en) * | 2016-10-17 | 2019-05-24 | 诺维尔里斯公司 | Metal plate with customization characteristic |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5273772B2 (en) * | 2008-03-14 | 2013-08-28 | トピー工業株式会社 | Induction heating device |
| JP4825882B2 (en) | 2009-02-03 | 2011-11-30 | トヨタ自動車株式会社 | High-strength quenched molded body and method for producing the same |
| JP2012152232A (en) * | 2011-01-21 | 2012-08-16 | ji-hong Su | Method of manufacturing golf club head |
| CN102517432A (en) * | 2012-01-20 | 2012-06-27 | 南京汽车锻造有限公司 | Quenching method for front shell of differential |
| KR101335447B1 (en) * | 2013-04-29 | 2013-12-05 | 한국건설기술연구원 | Induction heat treatment method for cutter ring of disk cutter, and cutter ring manufactured by such method |
| DE112014002237T5 (en) * | 2013-06-20 | 2016-01-21 | Aisin Aw Co., Ltd. | Gear and method for its production |
| CN104419815A (en) * | 2013-08-22 | 2015-03-18 | 上海纳铁福传动系统有限公司 | Induction tempering technology for shaft parts and inductor |
| DK177974B1 (en) * | 2013-09-09 | 2015-02-09 | Broen As | Plant and method for relaxing annealing of a workpiece comprising heat-sensitive parts, as well as relaxation-annealed workpiece |
| KR101338026B1 (en) * | 2013-11-01 | 2013-12-12 | 한국건설기술연구원 | Induction heat treatment method for cutter ring of disk cutter, and cutter ring manufactured by such method |
| CN103725836B (en) * | 2014-01-18 | 2015-09-02 | 双威大昌锻造(安徽)有限公司 | A kind of axle of track section, axle sleeve quenching processing units |
| CN105567941B (en) * | 2016-01-20 | 2017-10-03 | 盐城高周波热炼有限公司 | A kind of thin-wall hollow pipe heating device and its heating means |
| CN108393427A (en) * | 2018-05-10 | 2018-08-14 | 嘉兴市乍浦杭湾重型机械有限公司 | A kind of cooling device of large size pump head body forging |
| US20200199704A1 (en) * | 2018-12-19 | 2020-06-25 | GM Global Technology Operations LLC | Method for heat treating with a gradual temperature profile |
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| GB1028389A (en) * | 1964-02-26 | 1966-05-04 | Deutsche Edelstahlwerke Ag | Method of and apparatus for electro-inductively heating the chain links of the trackchains of caterpillar or tracklaying vehicles |
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| CN109804094A (en) * | 2016-10-17 | 2019-05-24 | 诺维尔里斯公司 | Metal plate with customization characteristic |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1502707A (en) | 2004-06-09 |
| JP4169635B2 (en) | 2008-10-22 |
| JP2004218064A (en) | 2004-08-05 |
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Assignee: SHANTUI CONSTRUCTION MACHINERY Co.,Ltd. Assignor: Topy Kogyo Kabushiki Kaisha Contract fulfillment period: 2008.10.28 to 2023.7.31 Contract record no.: 2008990001496 Denomination of invention: Part heat treatment method for parts to be heat treated and apparatus thereof Granted publication date: 20070314 License type: General permission Record date: 20081219 |
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Free format text: COMMON LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.28 TO 2023.7.31; CHANGE OF CONTRACT Name of requester: SHANTUI ENGINEERING MACHINE CO., LTD. Effective date: 20081219 |
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Granted publication date: 20070314 |