CN100404701C - Heat processing unit case heat treating method and its device - Google Patents
Heat processing unit case heat treating method and its device Download PDFInfo
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- CN100404701C CN100404701C CNB2005100709254A CN200510070925A CN100404701C CN 100404701 C CN100404701 C CN 100404701C CN B2005100709254 A CNB2005100709254 A CN B2005100709254A CN 200510070925 A CN200510070925 A CN 200510070925A CN 100404701 C CN100404701 C CN 100404701C
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Abstract
The invention provides a partial heat treatment method for the member to be heat-treated capable of corresponding to the formation of a complicated hardened layer pattern and also capable of making productivity satisfactory, and to provide a device therefor. In the partial heat treatment method where only the specified part 1a in the member 1 to be heat-treated is subjected to heat treatment, the heat treatment includes an induction heating stage 20 where only the specified part 1a is subjected to induction heating and a cooling stage 30 which is performed thereafter. To the carrying direction of the member to be heat-treated, on the upstream side, a first heating apparatus 11A for performing continuous heating is arranged, and on the downstream side, a second heating apparatus 11B for performing stop heating is arranged. In the induction heating stage, at the time when a complicated hardened layer pattern is required, after continuous heating by the first heating apparatus 11A, stoppage heating by the second heating apparatus 11B is performed, and, at the time when a complicated hardened layer pattern is not required, only continuous heating by the first heating apparatus 11A is performed. The device is used therefor.
Description
Technical field
The present invention relates to the case heat treating method and the device thereof of heat processing unit (implement thermal treatment and be used parts).
Heat processing unit for example is the link for endless track belt of building machinery, at this moment, by the part of partial heat treatment, is roller roll extrusion face.In addition, partial heat treatment is any one of selective hardening or localized tempering or selective hardening and localized tempering.
Background technology
As representational heat processing unit, as shown in figure 12, have at the grip-pad 2 that uses on the crawler belt of building machineries such as hydraulic excavator and dozer, chain link 1, pin 3, lining 4 and the blade tip (figure does not show) that on building machinery such as dozer and snow removing machinery, uses etc.For the facial 1a (Figure 13, Figure 14) of the roller roll extrusion of chain link 1, special requirement wear resistant.
Require characteristic in order to possess these, link for endless track belt, by the operation of following a～e, was made with the process sequence of a～e in the past.
A. the starting material forge hot that will constitute by medium carbon alloy steel and make the chain link starting material of chain link shape.
B. will utilize the afterheat of forge hot or reheat and reach Ac
3The whole quick cooling of the chain link starting material of transformation temperature or its above temperature is quenched.
C. the chain link starting material integral high-temperature tempering after will quenching.
D. only with the facial induction quenching (so-called selective hardening) of the raw-material roller roll extrusion of the chain link behind the high tempering.
E. only that the raw-material roller roll extrusion of chain link is facial by induction heating low-temperaturetempering (so-called localized tempering), perhaps, with chain link starting material integral body low-temperaturetempering in stove.
Thereby, on the chain link starting material, the thermal treatment in the 1st stage of enforcement b, c and the thermal treatment in these 2 stages of thermal treatment in the 2nd stage of d, e.The thermal treatment in the 1st stage is implemented " complete heat treatment " on the whole at the chain link starting material, and the thermal treatment in the 2nd stage is implemented " partial heat treatment " on the raw-material part of chain link.
The present invention relates to wherein " partial heat treatment ".
As the raw-material partial heat treatment of chain link, in the past, the induction heating method (for example, the spy opens clear 57-51583 communique) that is made of 1 operation was arranged.
But, in case heat treating method in the past, exist temperature head specific part, surface and core to become big, be difficult to specific part integral body is heated to the problem of uniform temperature.
As the method that addresses this problem, the method (spy who is proposed by the applicant is willing to 2004-145991) of Fig. 7, comparative example (because of unexposed, so be not prior art) shown in Figure 8 is arranged.
The case heat treating method of the heat processing unit of this comparative example comprises 2 following methods.
1) the n section stops formula heating (method shown in Figure 7) (n be 3 or its above natural number)
In 1 coil 11, put into n heat processing unit 1, carry out heating from the 1st n time of being heated to the n heating.
Carry out the 1st heating in turn, move, the 2nd heating, move, the n heating, then outside coil, cool off.
2) continous way heating (method shown in Figure 8)
In 1 coil 11, put into heat processing unit 1 continuously, heat while in coil 11, heat processing unit is moved continuously.After the heating, heat processing unit 1 is sent from coil 11, outside coil, cooled off.
In the method for comparative example, have in mobile process, specific part, from the surface to the effect that core moves heat and the temperature head of surface and core diminishes.And, compare with the situation of in 1 coil, carrying out 1 section or 2 sections heating, have the stand-by time that can shorten, and can improve productive effect at each heating location.
But in the method for above-mentioned comparative example, existence can not stop the problem that formula heats and continous way heats by dual-purpose.
Stopping the feature of formula heating (method of Fig. 7), is to make complicated hardened layer pattern (the hardened layer pattern of the section shape of non-linear shape).
The feature of continous way heating (method of Fig. 8) though be to make simple hardened layer pattern (the roughly hardened layer pattern of the section shape of linearity), can be heat-treated, continuously so productivity is good.
Patent documentation 1: the spy opens clear 57-51583 communique
Summary of the invention
The problem to be solved in the present invention is present in the previous methods, can only be satisfied with advantage of making complicated hardened layer pattern (the hardened layer pattern of the section shape of non-linear shape) and the problem that improves any one party of productive advantage.
The object of the present invention is to provide a kind of can the reply to make complicated hardened layer pattern (the hardened layer pattern of the section shape of non-linear shape), and when not needing to make complicated hardened layer pattern, can improve the case heat treating method and the device thereof of productive heat processing unit.
Reach above-mentioned purpose by following the present invention.
(1) a kind of case heat treating method of heat processing unit, it is the case heat treating method of only specific part of heat processing unit being heat-treated, wherein:
Aforementioned hot is handled, and only comprises aforementioned specific part is carried out the induction heating operation of induction heating and the refrigerating work procedure that then carries out;
On the heat processing unit throughput direction, carry out the 1st section the heating unit that comprises 1 or coil more than it of continous way heating and stop the 2nd section the heating unit that comprises 1 or coil more than it of formula heating in the downstream side configuration in advance in upstream side configuration; In aforementioned induction heating operation, at the hardened layer pattern of complexity when being essential, after the continous way heating of being undertaken by the 1st section heating unit, carry out stopping the formula heating by what the 2nd section heating unit carried out; When not needing complicated hardened layer pattern, only carry out the continous way heating undertaken by the 1st section heating unit and the energising of the 2nd section heating unit is closed.
(2) as the case heat treating method of (1) described heat processing unit, wherein, in aforementioned refrigerating work procedure, the integral body of aforementioned hot processing element is immersed in the certain position in the cooling fluid of cooling off in the liquid bath and makes it static, effusive cooling liquid flowing is ejected on the aforementioned specific part by spraying casing.
(3) as the case heat treating method of (1) described heat processing unit, wherein, the aforementioned hot processing element is a link for endless track belt.
(4) as the case heat treating method of (3) described heat processing unit, wherein, aforementioned specific part is the roller roll extrusion face of aforementioned chain link.
(5) as the case heat treating method of (1) described heat processing unit, wherein, it is selective hardening that aforementioned hot is handled.
(6) as the case heat treating method of (1) described heat processing unit, wherein, it is localized tempering that aforementioned hot is handled.
(7) as the case heat treating method of (1) described heat processing unit, wherein, it is selective hardening and localized tempering that aforementioned hot is handled.
(8) a kind of partial heat treatment device of heat processing unit, it is the partial heat treatment device of only specific part of heat processing unit being heat-treated, wherein:
Aforementioned partial heat treatment device only comprises aforementioned specific part is carried out the induction heating device of induction heating and the heat processing unit that aforementioned specific part has been heated is carried out the refrigerative refrigerating unit;
Aforementioned induction heating device is included in the 1st section the heating unit that comprises 1 or its above coil that carries out continous way heating that is configured in upstream side on the heat processing unit throughput direction and is configured in the 2nd section the heating unit that comprises 1 or its above coil that stops the formula heating in downstream side;
In aforementioned induction heating operation, at the hardened layer pattern of complexity in case of necessity, the both sides that stop the formula heating that carry out the continous way heating undertaken by the 1st section heating unit and undertaken by the 2nd section heating unit; At the hardened layer pattern of complexity when being unnecessary, only carry out the continous way heating undertaken by the 1st section heating unit and the energising of the 2nd section heating unit is closed.
(9) as the partial heat treatment device of (8) described heat processing unit, wherein, aforementioned refrigerating unit, possess the aforementioned hot processing element that to be transferred and be immersed in the certain position in the cooling fluid of cooling in the liquid bath and make its immobilized roller path, and possess effusive cooling liquid flowing is ejected into injection casing on the aforementioned specific part.
(10) as the partial heat treatment device of (8) described heat processing unit, wherein, the aforementioned hot processing element is a link for endless track belt.
(11) as the partial heat treatment device of (10) described heat processing unit, wherein, aforementioned specific part is the roller roll extrusion face of aforementioned chain link.
(12) as the partial heat treatment device of (8) described heat processing unit, wherein, it is selective hardening that aforementioned hot is handled.
(13) as the partial heat treatment device of (8) described heat processing unit, wherein, it is localized tempering that aforementioned hot is handled.
(14) as the partial heat treatment device of (8) described heat processing unit, wherein, it is selective hardening and localized tempering that aforementioned hot is handled.
In the partial heat treatment device of the case heat treating method of above-mentioned (1) and above-mentioned (8), because when the hardened layer pattern of needs complexity, carry out the 1st section the continous way heating of heating unit and the heating on both side that stops the formula heating of the 2nd section heating unit after the heating of this continous way; When not needing complicated hardened layer pattern, only carry out the 1st section heating unit continous way heating and the energising of the 2nd section heating unit closed, therefore can tackle the situation of making complicated hardened layer pattern (the hardened layer pattern of the section shape of non-linear shape), and, when not needing complicated hardened layer pattern, can improve productivity.The coil of the 2nd section heating unit, have mainly the concentrated area can will be difficult for heated part induction heating to specified temperature in the short period of time to be difficult for the shape that heated part heats in the 1st section heating unit in the 1st section heating unit.
In the partial heat treatment device of the case heat treating method of above-mentioned (2) and above-mentioned (9), because in refrigerating work procedure, be immersed in the integral body of heat processing unit in the cooling fluid in the cooling liquid bath and make it static, to be ejected on the aforementioned specific part by spraying the effusive cooling liquid flowing of casing, therefore can aim at specific part sprays, the quality of heat processing unit is improved, and by enough cooling liquid flowings are ejected on the specific part, can be when guaranteeing sufficient cooling power, cooling is become evenly, can improve heat treated quality.
In the partial heat treatment device of the case heat treating method of above-mentioned (3), (4) and above-mentioned (10), (11), the roller roll extrusion face with the present invention is applicable to link for endless track belt can obtain the raising of mechanical quality.
In the partial heat treatment device of the case heat treating method of above-mentioned (5)～(7) and above-mentioned (12)～(14), thermal treatment can be selective hardening, also can be localized tempering, can also be selective hardening and local tempered both sides.
Description of drawings
Fig. 1 is the process picture sheet of the case heat treating method of heat processing unit of the present invention.
Fig. 2 is the process picture sheet of the case heat treating method with heat processing unit of the present invention when being applicable to localized tempering.
Fig. 3 is the process picture sheet of the case heat treating method with heat processing unit of the present invention when being applicable to selective hardening.
Fig. 4 is the process picture sheet of the case heat treating method with heat processing unit of the present invention when being applicable to selective hardening and this two aspect of localized tempering.
Fig. 5 is the case heat treating method of heat processing unit of the present invention and the side-view of device thereof.
Fig. 6 (A) has showed simple hardened layer pattern (hardened layer has the pattern of linearity section), (B) has showed complicated hardened layer pattern (hardened layer has the pattern of non-linear shape section, for example コ word strip log case).
Fig. 7 is the case heat treating method of heat processing unit of comparative example (the n section stops the situation of formula heating) and the side-view of device thereof.
Fig. 8 is the case heat treating method of heat processing unit of comparative example (continous way heating situation) and the side-view of device thereof.
Fig. 9 be the case heat treating method of heat processing unit of the present invention and the device in, the orthographic plan of gripping unit and heater coil (from figure).
Figure 10 is the case heat treating method of heat processing unit of the present invention and the sectional view of part device, relevant cooling (figure has showed the refrigerative situation of quenching) thereof.
Figure 11 is the drawing in side sectional elevation of the device of Figure 10.
Figure 12 is the stereographic map of a part of the crawler belt of building machinery.
Figure 13 is the front view of chain link among Figure 12.
Figure 14 is the side-view of chain link among Figure 12.
Label declaration
1 heat processing unit (for example, the link for endless track belt of building machinery)
1a specific part (for example, the roller roll extrusion face of the link for endless track belt of building machinery)
5 cooling liquid baths, 6 cooling fluids
7 spray casing 8 cooling liquid flowings
The roller of 9 roller paths, 10 parts
The heating unit that 11 hot-wire coil 11A the 1st section
Heating unit 12 gripping units that 11B is the 2nd section
20 induction heating operations
The heating, heating that 20P had for the 1st stage intermittently, the induction heating operation of the present invention of the heating in the 2nd stage
The heating process that 20C is general
The 1st～the n heating location of the heating unit 11A that 21A (1)～21A (n) is the 1st section
The 1st～the n heating location of the heating unit 11B that 21B (1)～21B (n) is the 2nd section
The continous way heating that 22A is undertaken by the 1st section heating unit 11A
The 1st～the n heating among the heating unit 11A that 22A (1)～22A (n) is the 1st section
22B stops the formula heating by what the 2nd section heating unit 11B carried out
The 1st～the n heating among the heating unit 11B that 22B (1)～22B (n) is the 2nd section
Mobile (the moving heat radiation) of the heat processing unit between the 1st～the n heating location among the heating unit 11A that 23A is the 1st section
Mobile (the moving heat radiation) of the heat processing unit between the 1st～the n heating location among the heating unit 11B that 23B is the 2nd section
Moving of heat processing unit between 24 the 1st sections heating unit 11A and the 2nd section the heating unit 11B
30 refrigerating work procedures, 100 selective hardening operations
200 localized tempering operations
Embodiment
Below, the case heat treating method and the device thereof of heat processing unit of the present invention are described with reference to Fig. 1～Fig. 6 and Fig. 9～Figure 14 (Figure 12～Figure 14 is applicable to the explanation of conventional art).
As heat processing unit, be example with the link for endless track belt of building machinery.But heat processing unit is not limited to the link for endless track belt of building machinery.In addition, when heat processing unit 1 was the link for endless track belt 1 of building machinery, implementing heat treated specific part 1a was roller roll extrusion face.
The case heat treating method of heat processing unit of the present invention at first, is described.
As Fig. 1, Fig. 5, shown in Figure 6, the case heat treating method of heat processing unit of the present invention is the case heat treating method of only the specific part 1a of heat processing unit 1 being heat-treated.
The case heat treating method of heat processing unit of the present invention only comprises the induction heating operation 20 of the specific part 1a induction heating of heat processing unit 1 and the refrigerating work procedure 30 that then carries out.In induction heating, only specific part 1a is heated partly by high frequency induction current.
In induction heating operation 20, the induction heating operation of the inventive method is marked with label 20P, the induction heating operation of previous methods is marked with label 20C.
In the method for the invention, carry out the 1st section the heating unit 11A that comprises 1 or coil more than it of continous way heating and stop the 2nd section the heating unit 11B that comprises 1 or coil more than it of formula heating in the downstream side configuration in the configuration of the upstream side of heat processing unit throughput direction in advance.
And, in induction heating operation 20P, at the hardened layer pattern (the hardened layer pattern is the parts of the shape of non-linear shape as Fig. 6 (B)) of complexity when essential, after continous way heating (heat processing unit is heated while the carrying) 22A that is undertaken by the 1st section heating unit 11A, carry out heating (heat processing unit is stopped and heating) 22B by the formula that stops that the 2nd section heating unit 11B carries out; When not needing complicated hardened layer pattern (the hardened layer pattern is roughly during linearity as Fig. 6 (A)), the continous way of only carrying out the 1st section heating unit 11A heats 22A, and the energising of the 2nd section heating unit 11B is closed.Carry out the 2nd section heating unit 11B stop formula when heating, the 2nd section heating unit 11B stops formula heating 22B, carries out after the continous way heating 22A of the 1st section heating unit 11A.
The 1st section heating unit 11A, (wherein n is 1 or its above natural number to have above heating location 21A (the 1)～21A (n) of 1 or its, be preferably a plurality of, more preferably 3 or more than it), at continous way heating 22A, in the 1st section heating unit 11A, it is heated while heat processing unit 1 is moved.At each heating location 21A (1)～21A (n), respectively heat 22A (1)～22A (n) simultaneously and move 23.As n when being a plurality of, be that 1 situation is compared with n, can shorten the heat-up time of each heating location 21A (1)～21A (n), productivity improves.
In the 1st section heating unit 11A, between heating location 21A (1)～21A (n), heat processing unit 1 was moved at 23 o'clock, can be provided with each other at interval at heat processing unit 1, perhaps also can not be provided with at interval.Fig. 5 has showed the situation that the interval is not set.
The 2nd section heating unit 11B, has the above heating location 21B of 1 or its (when heating location is n, be made as 21B (1)～21B (n), but, because Fig. 5 has showed that heating location is 1 a situation, therefore only show 21B (1)), stopping formula heating 22B, make heat processing unit 1 stop and carrying out induction heating at each heating location 21B.Owing to before entering the 2nd section heating unit 11B, the linearity among the specific part 1a of heat processing unit 1 partly is heated to specified temperature, and by thermal conduction from the linearity part, part beyond the linearity part also is heated to medium temperature (also carrying out thermal conduction move to the 2nd section the traveling time 24 of heating unit 11B from the 1st section heating unit 11A in), therefore undertaken by the 2nd section heating unit 11B, the heat-up time of non-linear shape part among the specific part 1a of heat processing unit 1, compare with the situation that this part is begun to heat from normal temperature and to be shortened, productivity improves.When in the 2nd section heating unit 11B, having a plurality of heating location 21B (n of 21B (n) is a plurality of situation), be that 1 situation is compared with heating location 21B, can shorten the heat-up time of each heating location 21B, can further improve productivity.
In the 2nd section heating unit 11B, when a plurality of heat processing units 1 when mobile, can between a plurality of heat processing units 1, be provided with at interval, perhaps also can not be provided with at interval.
When heat processing unit 1 between heating location 21B in the moving process, the energising of the 2nd section heating unit 11B can be opened, and perhaps also can close.
In the 1st section heating unit 11A or in the 2nd section the heating unit 11B, the specific part 1a of heat processing unit 1 is heated rapidly, make it be raised to the temperature of regulation substantially by the 1st heating 22A (1), 22B (1).After the heating of the 1st heating 22A (1), 22B (1) finishes, near the Heating temperature of the near surface portion of the specific part 1a of the heat processing unit 1 of heater coil 11 with to compare temperature away from the temperature of the core of the specific part 1a of heater coil 11 higher.That is, after the heating of the 1st heating 22A (1), 22B (1) finishes, having the temperature distribution (temperature inequality) that has big temperature head on heat processing unit 1, also is at surface element and core temperature head to be arranged at specific part 1a.
Secondly, traveling time 23 between the 1st heating 22A (1), 22B (1) and the 2nd heating 22A (2), 22B (2), by from the near surface portion of specific part 1a to atmospheric heat radiation, with from the thermal conduction of the surface element of specific part 1a to the core of specific part 1a, the temperature inequality of specific part 1a will reduce, and can make specific part 1a evenly heating.
Repeat above-mentioned heating, move up to n heating 22A (n), 22B (n).When heating was finished, the temperature inequality of specific part 1a will reduce, and specific part 1a is in by the state of evenly heating.
If with in the 1st section the heating unit 11A or whole input energy of each heat processing unit in the 2nd section the heating unit 11B be made as W, when heating location is that (at the 1st section heating unit 11A, n is preferably 3 or its above natural number to n; Heating unit 11B at the 2nd section, because the major part of the specific part 1a of heat processing unit 1 reaches specified temperature, therefore n also can be 1) time, input energy at each heating location is W/n, with n is 1 or to compare W/n at 2 o'clock less, thus, be 1 in heat-up time of each heating location with n or compare heat-up time of 2 o'clock and be shortened.
In the 1st section heating unit 11A or in the 2nd section the heating unit 11B, as shown in Figure 9, pine in the adding of specific part 1a of heat processing unit 1, heat processing unit 1 usefulness gripping unit 12 is fixing.By clamping, the position relation of load coil (being called heater coil or coil simply) 11 and heat processing unit 1 is fixed, and can carry out the stable heating of specific part 1a.
In refrigerating work procedure 30, when especially partial heat treatment is selective hardening (still, partial heat treatment also goes for the situation of localized tempering), as Figure 10, shown in Figure 11, will be in the heating process 20 sensed integral body that is heated to specified temperature or the heat processing unit more than it 1 of specific part 1a only, be immersed in the certain position in the cooling fluid 6 in the cooling liquid bath 5 and make it static, spray by the effusive cooling liquid flowing 8 of jet hole that sprays casing 7, cool off to specific part 1a.
When heat processing unit 1 be transported to be positioned at the cooling liquid bath 5 the top position these parts 1 of conveying roller path 9 a part roller 10 above the time, with roller 10 that whenever should a part and to spray casing 7 be unit ground, mechanically the integral body with heat processing unit 1 is immersed in the cooling fluid of cooling off in the liquid bath 56, moreover and, flow out a large amount of cooling fluids and be ejected on the specific part 1a of heat processing unit 1 from 3 directions (about 2 directions and top) by spraying casing 7, by soaking and liquid stream cools off.After cooling finishes, make the position before heat processing unit 1 rises to this a part of roller 10 and 7 declines of injection casing, then send.The cooling and send into whole operation of sending and undertaken by automatic control.
As the cooling fluid that is used to quench, water, water-soluble quenching liquid, wet goods are arranged, can use any one cooling fluid.From the cost aspect and the operating environment aspect, preferably make water.
By cooling off, when guaranteeing sufficient speed of cooling, can guarantee uniform cooling by immersion and liquid stream.By fully guaranteeing speed of cooling, can obtain necessary quality (quenching hardness, tempered-hardness etc.), and, even by making speed of cooling, can play the effect that prevents hardening crack.In addition, owing to the certain position that heat processing unit 1 is still in the cooling fluid of cooling off in the liquid bath 56 cools off, therefore compare with the method for cooling that heat processing unit 1 moves in the cooling liquid bath in process of cooling, that has eliminated injection casing 7 and heat processing unit 1 does what, and can shorten the jet hole of injection casing 7 and the interval of heat processing unit 1, therefore flowing of spray liquid flow can not die down, can spray the liquid stream of enough speed, and can guarantee higher speed of cooling, therefore can obtain necessary quality.In addition, because heat processing unit 1 is cooled off still, therefore compare with the method for cooling that heat processing unit 1 is displaced in process of cooling in the cooling liquid bath, shortened the length on the throughput direction of heat processing unit 1 of cooling liquid bath 5, reduced equipment making expense, equipment operation cost.
Partial heat treatment of the present invention with heating process 20P of the present invention goes for selective hardening (Fig. 3), perhaps also goes for localized tempering (Fig. 2), perhaps can also be applicable to selective hardening and localized tempering both sides (Fig. 4).
The case heat treating method of the present invention of Fig. 2 (local heating 20P of the present invention is applicable to the situation of tempered local heating) has selective hardening operation 100 and local tempering process 200.
Selective hardening operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20C of transformation temperature or its above temperature and maintenance will have only the sensed Ac of being heated to of specific part
3The integral body of the heat processing unit 1 of transformation temperature or its above temperature is immersed in the certain position in the cooling fluid of cooling off in the liquid bath 56 and makes its immobilized state, goes up the refrigerating work procedure 30 that sprays by the effusive cooling liquid flowing 8 of jet hole that sprays casing 7 to specific part 1a.
Localized tempering operation 200, only comprise specific part 1a with heat processing unit 1 in atmosphere induction heating to about 200～300 ℃ sense temperature heating process 20P, and refrigerating work procedure (both can be force cooling also can be naturally cooling) 30.The induction heating operation 20P of this localized tempering operation, have the 1st section continous way heating 22A, move the 24, the 2nd stage of heat radiation stop formula heating 22B, the 1st section continous way heating 22A, can have a plurality of heating 22A (1)～22A (n) (wherein n be 1 or its above natural number), the 2nd section stop formula heating 22B, also can have a plurality of heating 22B (1)～22B (n) (wherein n be 1 or its above natural number).
The case heat treating method of the present invention of Fig. 3 (local heating 20P of the present invention is applicable to the situation of the local heating of quenching) has selective hardening operation 100 and local tempering process 200.
Selective hardening operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20P of transformation temperature or its above temperature and maintenance be the sensed Ac that is heated to of specific part only
3The integral body of the heat processing unit 1 of the temperature that transformation temperature or its are above is immersed in the certain position in the cooling fluid 6 in the cooling liquid bath 5 and makes its immobilized state, by the jet hole that sprays casing 7 effusive cooling liquid flowing 8 is ejected into refrigerating work procedure 30 on the specific part 1a.The induction heating operation 20P of this localized tempering operation, have the 1st section continous way heating 22A, move the 24, the 2nd stage of heat radiation stop formula heating 22B, the 1st section continous way heating 22A, can have a plurality of heating 22A (1)～22A (n) (wherein n be 1 or its above natural number), the 2nd section stop formula heating 22B, also can have a plurality of heating 22B (1)～22B (n) (wherein n be 1 or its above natural number).
Localized tempering operation 200, only comprise specific part 1a with heat processing unit 1 in atmosphere induction heating to about 200～300 ℃ sense temperature heating process 20C, and refrigerating work procedure (both can be force cooling also can be naturally cooling) 30.
The case heat treating method of the present invention of Fig. 4 (local heating 20P of the present invention is applicable to the local heating of quenching and the situation of this two aspect of tempered local heating) has selective hardening operation 100 and local tempering process 200.
Selective hardening operation 100 only has specific part 1a induction heating with heat processing unit 1 to Ac
3The operation 20P of transformation temperature or its above temperature and maintenance will only have the sensed Ac of being heated to of specific part
3The integral body of the heat processing unit 1 of transformation temperature or its above temperature is immersed in the certain position in the cooling fluid of cooling off in the liquid bath 56 and makes its immobilized state, will be ejected into the refrigerating work procedure 30 on the specific part 1a by the effusive cooling liquid flowing 8 of jet hole of injection casing 7.The induction heating operation 20P of this localized tempering operation, have the 1st section continous way heating 22A, move the 24, the 2nd stage of heat radiation stop formula heating 22B, the 1st section continous way heating 22A, a plurality of heating 22A (1)～22A (n) (wherein be 1 or its above natural number) can be arranged, the 2nd section stop formula heating 22B, also can have a plurality of heating 22B (1)～22B (n) (wherein n be 1 or its above natural number).
Localized tempering operation 200, only comprise specific part 1a with heat processing unit 1 in atmosphere induction heating to about 200～300 ℃ sense temperature heating process 20C, and refrigerating work procedure (both can be force cooling also can be naturally cooling) 30.The induction heating operation 20P of this localized tempering operation, have the 1st section continous way heating 22A, move the 24, the 2nd stage of heat radiation stop formula heating 22B, the 1st section continous way heating 22A, can have a plurality of heating 22A (1)～22A (n) (wherein n be 1 or its above natural number), the 2nd section stop formula heating 22B, also can have a plurality of heating 22B (1)～22B (n) (wherein n be 1 or its above natural number).
Then, with reference to Fig. 5～Figure 14 (still, because of Fig. 7, Fig. 8 are comparative examples, so be not included in the present invention) the partial heat treatment device of the present invention of implementing above-mentioned case heat treating method is described.
Partial heat treatment device of the present invention, it is the partial heat treatment device of only the specific part 1a of heat processing unit 1 being heat-treated, comprise only specific part 1a is carried out the induction heating device 11 of induction heating and specific part 1a is heated after heat processing unit 1 refrigerative refrigerating unit 5～10.
In induction heating, when the hardened layer pattern of needs complexity, carry out the formula that stops that the continous way heating 22A that being undertaken by the 1st section heating unit 11A and the heating unit 11B by the 2nd section afterwards carry out and heat 22B both sides; When not needing complicated hardened layer pattern, only carry out the continous way heating 22A that undertaken by the 1st section heating unit 11A and the energising of the 2nd section heating unit 11B is closed.
The partial heat treatment device also can possess in the adding of specific part 1a of heat processing unit 1 and pine for, the gripping unit 12 of stationary heat processing element 1.But, can not have gripping unit 12 yet.
The 1st section heating unit 11A preferably heats n heat processing unit 1 (Fig. 5) continuously.The 1st section heating unit 11B preferably stops formula heating 1 heat processing unit 1 (Fig. 5) at least.
In the moving of 21A between the heating location of heat processing unit 1 (1)～21A (n), can will close, perhaps also can open to the energising of coil 11.Fig. 5 has showed situation about opening.
Refrigerating unit possesses the heat processing unit 1 that will be carried and is immersed in the certain position in the cooling fluid of cooling off in the liquid bath 56 and makes its immobilized roller path 10.
Refrigerating unit possesses effusive cooling liquid flowing 8 is ejected into injection casing 7 on the specific part 1a of heat processing unit 1.
Partial heat treatment both can be a selective hardening, also can be localized tempering, can also be selective hardening and local tempered both sides.
Secondly, the case heat treating method of heat processing unit of the present invention and the action effect of device thereof are described.
Because when the hardened layer pattern of needs complexity, carry out the formula that stops that continous way heating 22A that is undertaken by the 1st section heating unit 11A and the heating unit 11B by the 2nd section that carries out carry out and heat these both sides of 22B after this continous way heating 22A; When not needing complicated hardened layer pattern, only carry out the continous way heating 22A that undertaken by the 1st section heating unit 11A and the energising of the 2nd section heating unit 11B is closed, therefore can tackle the situation of making complicated hardened layer pattern (the hardened layer pattern of the section shape of non-linear shape), and, when not needing to make complicated hardened layer pattern, also can make productivity good.Because the coil 11B of the 2nd section heating unit, has the shape that heat the part that is difficult for heating in the 1st section heating unit 11A in main concentrated area, and the part by the 1st section heating unit 11A heating is heated in the 1st section heating unit 11A, the part that is difficult for heating in the 1st section heating unit 11A is also by means of being heated from the thermal conduction at this position, therefore can be in the relatively shorter time, the part induction heating that will be difficult for heating in the 1st section heating unit 11A is to specified temperature.
In refrigerating work procedure, because the integral body of heat processing unit 1 is immersed in the certain position in the cooling fluid of cooling off in the liquid bath 5 and makes it static, to be ejected on the specific part 1a by spraying casing 7 effusive cooling liquid flowings, therefore can aim at specific part 1a shower cooling liquid, the heat treated quality of heat processing unit 1 is improved, and by enough cooling liquid flowings are ejected on the specific part 1a, can be when guaranteeing enough cooling poweies, cooling is become evenly, can improve heat treated quality.
The present invention can be applicable to the roller roll extrusion face of link for endless track belt, thus the raising of the quality of the machinery of acquisition link for endless track belt.
In this case, thermal treatment can be selective hardening, also can be localized tempering, can also be selective hardening and local tempered both sides.
Claims (14)
1. the case heat treating method of a heat processing unit, it is the case heat treating method of only specific part of heat processing unit being heat-treated, wherein:
Aforementioned hot is handled, and comprises only with the induction heating operation of aforementioned specific part induction heating and the refrigerating work procedure that then carries out;
Be configured at upstream side along the heat processing unit throughput direction in advance and be about to that the 1st section the heating unit that comprises 1 or coil more than it of continous way heating that heat processing unit heats while carrying and be configured in the downstream side exercises that heat processing unit stops and the 2nd section the heating unit that comprises 1 or coil more than it that stops the formula heating that heating;
In aforementioned induction heating operation, when the hardened layer pattern of needs complexity, the formula that stops of carrying out aforementioned the 2nd section heating unit after the continous way heating of aforementioned the 1st section heating unit heats; When not needing complicated hardened layer pattern, only carry out the continous way heating of aforementioned the 1st section heating unit and the energising of aforementioned the 2nd section heating unit is closed.
2. the case heat treating method of heat processing unit as claimed in claim 1, wherein, in aforementioned refrigerating work procedure, the integral body of aforementioned hot processing element is immersed in the certain position in the cooling fluid of cooling off in the liquid bath and makes it static, will be ejected on the aforementioned specific part by spraying the effusive cooling liquid flowing of casing.
3. the case heat treating method of heat processing unit as claimed in claim 1, wherein, the aforementioned hot processing element is a link for endless track belt.
4. the case heat treating method of heat processing unit as claimed in claim 3, wherein, aforementioned specific part is the roller roll extrusion face of aforementioned chain link.
5. the case heat treating method of heat processing unit as claimed in claim 1, wherein, it is selective hardening that aforementioned hot is handled.
6. the case heat treating method of heat processing unit as claimed in claim 1, wherein, it is localized tempering that aforementioned hot is handled.
7. the case heat treating method of heat processing unit as claimed in claim 1, wherein, it is selective hardening and localized tempering that aforementioned hot is handled.
8. the partial heat treatment device of a heat processing unit, it is the partial heat treatment device of only specific part of heat processing unit being heat-treated, wherein:
Aforementioned partial heat treatment device only comprises with the induction heating device of aforementioned specific part induction heating with to the heat processing unit that aforementioned specific part has been heated and carries out the refrigerative refrigerating unit;
Aforementioned induction heating device comprises the 1st section the heating unit that comprises 1 or the coil more than it of the carrying out that be configured in upstream side along the heat processing unit throughput direction heated heat processing unit while carrying continous way heating and is configured in downstream side heat processing unit is stopped and the 2nd section the heating unit that comprises 1 or the coil more than it that stops the formula heating that heating;
In aforementioned induction heating operation, when the hardened layer pattern of needs complexity, carry out the both sides that formula heats that stop of the continous way heating of aforementioned the 1st section heating unit and aforementioned the 2nd section heating unit; When not needing complicated hardened layer pattern, only carry out the continous way heating of aforementioned the 1st section heating unit and the energising of aforementioned the 2nd section heating unit is closed.
9. the partial heat treatment device of heat processing unit as claimed in claim 8, wherein, aforementioned refrigerating unit, possess the aforementioned hot processing element of will be carried and be immersed in the certain position in the cooling fluid of cooling in the liquid bath and make its immobilized roller path, and possess effusive cooling liquid flowing is ejected into injection casing on the aforementioned specific part.
10. the partial heat treatment device of heat processing unit as claimed in claim 8, wherein, the aforementioned hot processing element is a link for endless track belt.
11. the partial heat treatment device of heat processing unit as claimed in claim 10, wherein, aforementioned specific part is the roller roll extrusion face of aforementioned chain link.
12. the partial heat treatment device of heat processing unit as claimed in claim 8, wherein, it is selective hardening that aforementioned hot is handled.
13. the partial heat treatment device of heat processing unit as claimed in claim 8, wherein, it is localized tempering that aforementioned hot is handled.
14. the partial heat treatment device of heat processing unit as claimed in claim 8, wherein, it is selective hardening and localized tempering that aforementioned hot is handled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004147268A JP4131715B2 (en) | 2004-05-18 | 2004-05-18 | Method and apparatus for partial heat treatment of heat treatment member |
| JP147268/2004 | 2004-05-18 |
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| Publication Number | Publication Date |
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| CN1699607A CN1699607A (en) | 2005-11-23 |
| CN100404701C true CN100404701C (en) | 2008-07-23 |
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| CNB2005100709254A Active CN100404701C (en) | 2004-05-18 | 2005-05-17 | Heat processing unit case heat treating method and its device |
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| JP (1) | JP4131715B2 (en) |
| CN (1) | CN100404701C (en) |
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| CN109804094A (en) * | 2016-10-17 | 2019-05-24 | 诺维尔里斯公司 | Metal plate with customization characteristic |
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| DE102007024797A1 (en) * | 2007-05-26 | 2008-11-27 | Linde + Wiemann Gmbh Kg | Method for producing a profile component, profile component and use of a profile component |
| DE102007043154B4 (en) | 2007-09-11 | 2017-01-26 | Voestalpine Krems Gmbh | Method and device for hardening profiles |
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| WO2012085251A2 (en) * | 2010-12-24 | 2012-06-28 | Voestalpine Stahl Gmbh | Method for producing hardened structural elements |
| JP5764667B2 (en) * | 2011-11-24 | 2015-08-19 | 本田技研工業株式会社 | Side panel structure for vehicles |
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| JP2016089183A (en) * | 2014-10-29 | 2016-05-23 | 高周波熱錬株式会社 | Heat treatment method for workpiece |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4131715B2 (en) | 2008-08-13 |
| CN1699607A (en) | 2005-11-23 |
| JP2005330504A (en) | 2005-12-02 |
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