WO1994014985A1 - Constrained hardening apparatus and heat treatment apparatus - Google Patents
Constrained hardening apparatus and heat treatment apparatus Download PDFInfo
- Publication number
- WO1994014985A1 WO1994014985A1 PCT/JP1993/000721 JP9300721W WO9414985A1 WO 1994014985 A1 WO1994014985 A1 WO 1994014985A1 JP 9300721 W JP9300721 W JP 9300721W WO 9414985 A1 WO9414985 A1 WO 9414985A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- quenching
- mold
- constrained
- quenched
- molds
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
Definitions
- the present invention relates to a constrained quenching apparatus suitable for quenching a member such as a rod while preventing deformation, and a heat treatment apparatus using the same.
- a constrained quenching apparatus suitable for quenching irregularly shaped members that are likely to be deformed during quenching, and hollow members that have been difficult to apply with conventional constrained quenching devices.
- Quenching of mechanical parts is very common, but axisymmetric ones such as simple rotating shafts are hardened while rotating to prevent distortion.
- axisymmetric ones such as simple rotating shafts are hardened while rotating to prevent distortion.
- the cooling rate does not become axially symmetric, and bending tends to occur due to quenching.
- a press quench which is constrained quenching, has been conventionally performed.
- the whole or a part of the material to be quenched at a predetermined quenching temperature is put into a mold having a concave portion of a predetermined shape, and is cooled by contact with the die while applying pressure, or is cooled as it is. It is to be cooled by putting it into a tank of reject liquid.
- the heat of the material to be quenched is once conducted to the mold, and the mold itself is cooled by a cooling liquid to perform quenching.
- the cooling rate can be partially changed, it can be combined with the adjustment of the quenching heating temperature, and the quenching hardness can be set to a desired value for each part, which is also favorable in material properties.
- the present invention provides a constrained quenching device that does not cause deformation even in hollow members due to the problems described above, and a quenching device that can partially adjust the quenching cooling rate. It is an object of the present invention to provide a heat treatment apparatus capable of efficiently quenching, tempering, and the like, that is, the present invention is constituted by a set of a plurality of molds attached to a pressurizing means, In the state where the mold contact surfaces of adjacent molds in the mold are in contact with each other, the inside of the mold communicates with a plurality of convex portions having a tip position corresponding to the shape of the material to be quenched and the outside of the mold or an adjacent concave portion. And a quenching liquid jet port at least at one or more locations of the recesses of the one set of molds. .
- the constrained quenching apparatus may include a plurality of the quenching liquid jets, and may be provided with a means for adjusting the amount of the quenching liquid jetted from each of the jets.
- the recess may be formed by forming a groove in the inner surface.
- the convex portion is formed by providing a plurality of pieces on the inner surface. It is characterized by doing.
- the present invention is a heat treatment apparatus characterized in that the induction heating apparatus and the above-described constrained quenching apparatus are provided close to each other in a positional relationship in which the heat treatment target material moves while maintaining the same height position.
- FIG. 1 shows an example of a mold which is a main part of a constrained quenching apparatus according to the present invention, and shows a cross-sectional view in a state where a material to be quenched is sandwiched.
- FIG. FIG. 2 is a side view showing a partial cross-section in a state where is opened.
- FIG. 3 is a perspective view showing an example of a material to be ripened suitable for applying the apparatus of the present invention
- FIG. 4 is another example of the mold according to the present invention, which is different from FIG.
- FIG. 5 is a side view of the heat treatment apparatus of the present invention.
- FIG. 3 is a perspective view showing an example of a hardened material 1 to be subjected to restrained quenching using the apparatus of the present invention, in which a rack 2 is cut in a part of a hollow tube.
- FIGS. 1 and 2 show an apparatus for quenching a rack portion made of the material shown in FIG. 3, and show a mold portion which is a main part of the constrained quenching apparatus of the present invention. That is, Fig. 1 is a cross-sectional view of a set of molds with the upper and lower molds sandwiching the material to be hardened, and Fig. 2 shows the mold with the upper and lower molds opened and the material to be hardened removed.
- the device of the present invention performs constraint quenching using a mold, but the upper mold 3 and the lower mold 4 are in contact with the mold contact surface 7, In other words, when the mold is completely closed, the quenched material is not subjected to a compressive force at the start of quenching.
- the inside of the mold has the shape of the quenched material. It has a plurality of protrusions 5 with the same tip position, and these protrusions lightly contact the quenched material 1 with the mold closed or have a slight gap.
- the inside of the mold has a concave portion 6 between these convex portions, and the upper and lower molds in which the quenching liquid ejection port 8 is arranged are respectively provided. It has hollow portions 13 and 14 and communicates with a plurality of quenching liquid outlets 8 that are open to the recesses. A plug with a hole is screwed into each quenching liquid outlet 8 (not shown). No), the amount of spout can be changed by replacing the plug with a different hole diameter.
- the upper and lower molds 3 and 4 have holes 9 and 10 at both ends, through which the material to be quenched penetrates when the molds are closed. Can be done.
- the inner surface of the mold is constituted by the plurality of convex portions 5 and the concave portions 6, and the concave portion is provided with a plurality of quenching liquid ejection ports 8.
- the quenched liquid that has been ejected passes through the communicating recess and is discharged to the outside of the mold from a discharge port 11 formed between the quenched material and the material to be quenched.
- a discharge port 12 is also provided at the bottom of the concave portion of the lower mold 4 so that the liquid collected at the bottom can be discharged. It can be provided further along the circumference of the material, or at another position communicating with the concave portion of the mold.
- Supply pipes 15 and 16 for the quenching liquid are connected to the hollow portions 13 and 14 of the upper and lower molds, respectively.
- the cooling rate can be changed by the arrangement of the quenching liquid outlet, the size of the quenching liquid outlet, the arrangement of the projections, and the like, so that the deformation can also be suppressed. In other words, before the deformation is prevented by the restraint, it is possible to remove the cause of the deformation to some extent.
- by partially adjusting the cooling rate it is possible to partially control the quenching hardness, the quenching depth, and the like by combining with the quenching and heating conditions. At least one of the upper and lower dies should be located in at least one of the recesses.However, it is possible to change the quenching speed by properly arranging the outlet. it can.
- the cooling is quick when the injection from the injection port is directly applied, and the cooling is relatively slow when the cooling is performed by the cooling liquid flowing in the recess.
- the projections need to be appropriately arranged in order to prevent deformation of the material, which is the object of the present invention, but when they are in contact with the large-area projections, cooling slows down, so The cooling rate can be adjusted depending on the arrangement.
- the cooling rate can be adjusted by providing means for adjusting the amount of quenching liquid ejected from each outlet.
- a control valve may be provided at each of the ejection ports.
- the ejection port portion is formed into a screw hole, and plugs having various opening diameters are screwed into the hole and adjusted. Is also good.
- the shape of the die in the constrained quenching device is a die with an inner surface that matches the shape of the material to be hardened In this case, the groove may be cut to form a concave part.Also, a mold having an inner surface larger than the outer surface of the material to be quenched is manufactured, and a piece is attached to a necessary portion to form a convex part. In any case, if the recess is connected to the outside or the adjacent recess so that the quenched liquid ejected can be discharged, the recess can be removed later. Regardless of the method of forming the part or the method of forming the convex part, the manufacturing method of the mold does not matter.
- the present invention has been described with an example of the most basic form in which a set of molds is composed of an upper mold and a lower mold.
- the present invention has a The number of divisions does not matter as long as it is divided into
- Fig. 4 shows a mold for quenching the material shown in Fig. 3 as in the previous example, and shows a cross-sectional view of the mold with the material to be quenched sandwiched between the dies as in Fig. 1 above.
- the mold is composed of three molds, 3 1, 3 2, and 3 3.
- the contact surfaces 3 4, 3 5, 3 6 of these adjacent molds are in contact, the inside of a set of molds Has a plurality of convex portions 5 corresponding to the shape of the material 1 to be quenched.
- the structure of the other parts described above is the same as that of FIG.
- the constrained quenching device of the present invention is configured by attaching the mold shown in FIGS. 1, 2 and 4 to a pressing means.
- FIG. 5 shows this state, and also shows a ripening apparatus using the constrained quenching apparatus of the present invention.
- reference numeral 20 denotes a constrained quenching device of the present invention, in which a set of dies shown in FIG. 4 is attached to a hydraulic pressurizing device.
- the hydraulic cylinder 22 is a piston rod driven by the hydraulic cylinder, and is mounted to be inclined so as to lift the mold 31 obliquely upward.
- the other two hydraulic cylinders are located symmetrically with respect to the plane parallel to the plane of the drawing with the one shown in Fig. 5, and lifts the split mold 32 shown in Fig. 4 diagonally upward.
- the pressurizing means is not limited to such a hydraulic device, and for example, a mechanical pressurizing device powered by a motor or the like may be used.
- the induction heating device 23 in close proximity to the 'constrained quenching device 20' of the present invention, a particularly efficient ripening device can be constructed.
- a material that can be rapidly ripened is preferable in terms of work efficiency, but an induction heating device that can ripen the entire circumference of the rod-shaped member is particularly preferable in order to exhibit the performance of the constrained quenching device of the present invention.
- the constrained quenching device 20 and the induction ripening device 23 are arranged close to each other in a positional relationship in which the material to be treated 1 moves while maintaining the same height position. .
- the material to be heat-treated 1 is a rod-shaped member, it may be arranged so as to be on the same axis. Thus, the material to be ripened can be moved by moving in the axial direction.
- Reference numerals 24 and 25 in FIG. 5 denote roller feeders for this purpose. Therefore, when only a part of the length of the rod-shaped member is matured, only the required length of the part is heated and then sent to a constrained quenching device to be immediately quenched. If the same induction heating device is used for tempering, it can be easily returned to this.
- connection rods 27 and 28 denote connecting rods, which are connected to the material to be treated 1 at connection portions 29 and 30, respectively.
- the connecting rod may be a solid rod or a pipe, and may be connected by a method such as screwing so that it can be easily removed after the work is completed. The following describes the results of quenching using the apparatus of the present invention. I will.
- the quenching was performed not only on the teeth of the rack but also on the entire circumference of the tube where the rack is provided.
- the approximate dimensions of the material to be quenched are as follows: The part where the rack 2 is provided and the cross section is broken is the outer diameter of the pipe is 23 mm, the inner diameter is 19 mm, and the length is 30 Omm. The length of the part where the teeth are formed is 180 mm.
- the portion of the left cross section having a full circle has an outer diameter of 25 mm, an inner diameter of 21 mm, and a length of 450 mm.
- the material is equivalent to JIS carbon steel S40C for machine structural use.
- the material was heated to about 86 CTC by a high-frequency induction ripening device 23 and quenched by spraying water with a binding quenching device 20 of the present invention.
- the to-be-quenched material 1 was connected to bar rods 27 and 28 of the same cross-sectional shape so that the material could be moved smoothly during heating and quenching.
- the amount of bending (maximum deflection from the axis) in a span of 200 mm in length of the quenched material was in the range of 0.02 to 0.05 mm. This is a practically bend-free state. No deformation such as partial dents in the material or flattening of the tube was observed.
- the bending amount reached 2.0 to 3.2 mm. Industrial applicability
- the quenching It is possible to generate a binding force only when cooling and trying to deform without applying pressure to the material, so that even hollow members such as pipes can be subjected to pressure. Quenching distortion can be prevented without deformation such as flattening. Further, the amount of the quenching liquid can be partially changed with respect to the material to be quenched, and from this aspect, quenching distortion can be prevented and the material can be controlled. Further, according to the heat treatment apparatus of the present invention, highly efficient material heating can be performed, and further, the movement of the material during the ripening step, the quenching step, and the tempering step is extremely smooth, Highly efficient work is possible.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69327899T DE69327899T2 (de) | 1992-12-28 | 1993-05-28 | Zwangsabschreck - und wärmebehandlungsvorrichtung |
EP93910413A EP0628641B1 (en) | 1992-12-28 | 1993-05-28 | Constrained quenching apparatus and heat treatment apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4/358645 | 1992-12-28 | ||
JP35864592A JP3205412B2 (ja) | 1992-12-28 | 1992-12-28 | 拘束焼入れ装置および熱処理装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994014985A1 true WO1994014985A1 (en) | 1994-07-07 |
Family
ID=18460386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/000721 WO1994014985A1 (en) | 1992-12-28 | 1993-05-28 | Constrained hardening apparatus and heat treatment apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US5492308A (ja) |
EP (1) | EP0628641B1 (ja) |
JP (1) | JP3205412B2 (ja) |
DE (1) | DE69327899T2 (ja) |
WO (1) | WO1994014985A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0754771A1 (en) | 1995-07-19 | 1997-01-22 | Neturen Co., Ltd. | Method and apparatus for quenching a tubular workpiece |
KR100554485B1 (ko) * | 1996-06-07 | 2006-04-21 | 게스탐프 하르트테크 아베 | 강판제품의제조방법 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3007338B1 (ja) | 1998-10-12 | 2000-02-07 | 高周波熱錬株式会社 | 異形棒状部材の拘束焼入れ方法および装置 |
JP3526794B2 (ja) | 1999-10-01 | 2004-05-17 | トヨタ自動車株式会社 | ラックバー |
SE523172C2 (sv) * | 2001-10-22 | 2004-03-30 | Accra Teknik Ab | Anordning och förfarande för härdning av tunnväggiga ihåliga metallhöljen |
JP2006137997A (ja) * | 2004-11-12 | 2006-06-01 | Toyota Motor Corp | 中空部材の焼き入れ装置及び焼き入れ方法 |
US20090000710A1 (en) * | 2007-06-28 | 2009-01-01 | Caterpillar Inc. | Quenching process utilizing compressed air |
US8034285B2 (en) * | 2007-11-15 | 2011-10-11 | Sterling Engineering And Manufacturing Company, Inc. | Quenching methods and apparatus |
US8172510B2 (en) * | 2009-05-04 | 2012-05-08 | Hamilton Sundstrand Corporation | Radial compressor of asymmetric cyclic sector with coupled blades tuned at anti-nodes |
CN101654735B (zh) * | 2009-06-30 | 2011-06-08 | 大连冶金轴承股份有限公司 | 大型调心滚子轴承套圈淬火冷却方法 |
DE102009050533A1 (de) * | 2009-10-23 | 2011-04-28 | Thyssenkrupp Sofedit S.A.S | Verfahren und Warmumformanlage zur Herstellung eines gehärteten, warm umgeformten Werkstücks |
US10174395B2 (en) | 2015-10-15 | 2019-01-08 | The Boeing Company | Interference fit quench plug assembly and methods for use thereof |
JP6660752B2 (ja) * | 2016-02-04 | 2020-03-11 | 高周波熱錬株式会社 | 焼入装置 |
JP6633445B2 (ja) * | 2016-04-25 | 2020-01-22 | アイシン・エィ・ダブリュ工業株式会社 | 金型、金型装置およびワークの冷却方法 |
CN112522499B (zh) * | 2020-11-11 | 2022-08-02 | 中国航发中传机械有限公司 | 一种航空用斜幅板圆柱齿轮的热处理方法 |
CN113953492B (zh) * | 2021-10-25 | 2023-02-03 | 湖州南丰机械制造有限公司 | 一种用于精密铸造的水淬方法,及其使用设备 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4939368B1 (ja) * | 1966-05-26 | 1974-10-25 | ||
JPS6428304A (en) * | 1987-07-23 | 1989-01-30 | Sumitomo Electric Industries | Heat treatment of sintered parts |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1561384A (en) * | 1921-04-29 | 1925-11-10 | Gen Motors Corp | Quenching apparatus and process |
US3294597A (en) * | 1960-12-05 | 1966-12-27 | Smith Corp A O | Method for quenching a metal member |
JPS5145220B2 (ja) * | 1972-08-15 | 1976-12-02 |
-
1992
- 1992-12-28 JP JP35864592A patent/JP3205412B2/ja not_active Expired - Fee Related
-
1993
- 1993-05-28 WO PCT/JP1993/000721 patent/WO1994014985A1/ja active IP Right Grant
- 1993-05-28 DE DE69327899T patent/DE69327899T2/de not_active Expired - Fee Related
- 1993-05-28 EP EP93910413A patent/EP0628641B1/en not_active Expired - Lifetime
-
1994
- 1994-08-26 US US08/295,727 patent/US5492308A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4939368B1 (ja) * | 1966-05-26 | 1974-10-25 | ||
JPS6428304A (en) * | 1987-07-23 | 1989-01-30 | Sumitomo Electric Industries | Heat treatment of sintered parts |
Non-Patent Citations (1)
Title |
---|
See also references of EP0628641A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0754771A1 (en) | 1995-07-19 | 1997-01-22 | Neturen Co., Ltd. | Method and apparatus for quenching a tubular workpiece |
KR100554485B1 (ko) * | 1996-06-07 | 2006-04-21 | 게스탐프 하르트테크 아베 | 강판제품의제조방법 |
Also Published As
Publication number | Publication date |
---|---|
EP0628641B1 (en) | 2000-02-23 |
DE69327899D1 (de) | 2000-03-30 |
US5492308A (en) | 1996-02-20 |
EP0628641A4 (en) | 1996-03-06 |
JP3205412B2 (ja) | 2001-09-04 |
JPH06200320A (ja) | 1994-07-19 |
DE69327899T2 (de) | 2000-06-15 |
EP0628641A1 (en) | 1994-12-14 |
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