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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
  • B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
  • B23K37/0426—Fixtures for other work
  • B23K37/0435—Clamps
  • B23K37/0443—Jigs
• • 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
  • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
  • C21D9/0025—Supports; Baskets; Containers; Covers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
  • F27D1/00—Casings; Linings; Walls; Roofs
  • F27D1/14—Supports for linings
  • F27D1/145—Assembling elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
  • F27D5/00—Supports, screens or the like for the charge within the furnace

Definitions

• the present invention relates to a heat treatment jig in which a work for performing a heat treatment is mounted on an upper surface and used.
• a metal member is arranged at a connection portion of the plurality of members, and a work on which the timber material is arranged is placed on an upper surface and a high-temperature furnace is formed. It is used for connecting a plurality of members by melting the material and connecting it. Also, heat-treat the thermosetting paint or other surface material applied to the surface to a certain temperature, and place a plurality of workpieces on the upper surface and place them in a high-temperature furnace for a certain time to perform the heat treatment. It is used as a jig for cases. Background art
• these heat treatment jigs include an outer peripheral frame (21) constituting a jig (20), a mounting portion (22) for mounting a work, and a stay (24). ) And the like were made strong by using thick members, and were formed by being immovably connected to each other by welding (23). This is because, when the jig (20) is placed with the work placed in the furnace, thermal distortion is caused by high-temperature heating, and the jig (20) may be deformed by the thermal distortion. There were many. Therefore, for the purpose of not deforming the heat treatment jig, the heat treatment jig is formed firmly using a thick member.
• the jig is heated from room temperature to be exposed to a high-temperature atmosphere at a furnace temperature of 110 ° C or more, and cooled to room temperature. If the process is repeated frequently, the internal stress of the material due to the imbalance of heat during cooling and heating, in addition to the welding distortion during manufacturing, causes large deformation of the members that make up the jig. Was. When such deformation occurs, the work placed on the upper surface is also affected by this deformation.
• the weight of the jig increases, and the proportion of the furnace processing weight occupied by the jig increases. That is, from the viewpoint of the heating energy, the ripening energy absorbed by the jig is useless, and it is most preferable that the heating energy in the furnace is applied only to the work.
• a rigidly formed jig conventionally absorbs much heat and causes large heat loss. Therefore, a large heating zone space and a long heating time were required in the furnace.
• the present invention is intended to solve the above-described problem.
• the jig When the jig is inserted into a heating furnace together with a work, the jig is not deformed due to thermal distortion.
• the jig By reducing the number of jigs, the jig will be used for a significantly longer period than conventional products.
• the thickness of the jig and making the weight light not only the workability of the operator is improved, but also the amount of heat absorbed in the furnace is reduced, thereby improving the efficiency of the work.
• heat treatment equipment It is intended to make it possible to simultaneously reduce the initial cost and running cost due to miniaturization.
• the present invention provides an outer frame including a plurality of members, and a mounting portion for mounting a workpiece disposed between the outer frames.
• the members constituting the outer peripheral frame and the connection between these members and the members constituting the mounting portion are connected via an expansion interval capable of absorbing the expansion during thermal expansion of each member. Is Umono.
• connection shaft may be inserted to allow the members to move relative to each other at the connection portion when the members are thermally expanded.
• the members constituting the outer peripheral frame and the connection between these members and the mounting portion may be directly performed.
• the members constituting the outer peripheral frame and the connection between these members and the mounting portion may be made via an interposition member.
• connection shaft may be detachably connected to the through hole.
• connection shaft may be one which is irremovably connected to the insertion hole.
• the mounting portion may be configured by a plurality of members, and the mounting portion may be configured by one member that is connected or integrated.
• the work to be subjected to the heat treatment is mounted on the upper surface of the mounting portion of the jig, and the jig is introduced into the heating furnace.
• the work is heated and subjected to a heat treatment such as tasting, and the jig also inevitably absorbs heat energy.
• This heating causes thermal expansion of the members that make up the jig .
• the members are movably connected, and the members constituting the outer peripheral frame and the connection between these members and the mounting portion are expanded when the respective members thermally expand. This is done through an extension interval that can absorb the pressure.
• the expansion due to the thermal expansion of the member is different from that of the conventional case. It is absorbed by the stretching gap formed between the members.
• each member is capable of absorbing the strain due to the thermal expansion by moving the member, in addition to absorbing the extension due to the extension interval.
• the members constituting the jig can absorb the elongation due to the thermal expansion, the jig is not distorted or deformed. There is no accompanying deformation. Also, there is no deformation or thermal distortion of the jig members, so it is not necessary to form the jig firmly, and only the strength necessary for work or for placing and handling the work exists. That is all we need to do. As a result, it is possible to reduce the thickness of the members that make up the workpiece, and if it is placed in a furnace, will the amount of heat energy absorbed by the jig be significantly less than conventional products? Therefore, it is possible to efficiently heat-treat the work without absorbing useless heat calories.
• each member is movably connected through an extension interval.
• This movable connection is made by inserting the connecting shaft of each member into the connecting part.
• a through-hole is formed so that a connection shaft having a smaller diameter than the insertion hole is inserted into the through-hole.
• a play portion is formed in the through hole. This play allows the member to move as the member expands due to thermal expansion.
• the members constituting the jig are configured such that the outer peripheral frame is composed of a plurality of members and a mounting portion for mounting a work is arranged inside the outer peripheral frame. May be directly connected to the through hole via a connection shaft, or may be connected via an interposing member for connection. When connecting via an interposition member, it is possible to simplify the shape of the member constituting the work, and to provide workability and versatility.
• the mounting portion is composed of a plurality of members, and if the plurality of members are movably connected to each other and connected via an extension interval, the mounting portion is large and thermal expansion occurs. Even large quantities are effectively absorbed and do not cause thermal distortion.
• the mounting section since the mounting section has a small amount of thermal expansion and the like if it has a small area, the mounting section may be formed of one member connected or integrated.
• thermal expansion can be absorbed by the extension interval formed between the outer frame and the outer frame, so that the configuration of the jig can be simplified and an inexpensive product can be obtained.
• FIG. 1 is a perspective view of one embodiment.
• Fig. 2 is an enlarged sectional view showing the connection relationship between the through hole and the connection shaft.
• FIG. 3 is an enlarged cross-sectional view showing a state in which the mounting portion and the outer peripheral frame are directly connected.
• FIG. 4 is a plan view showing a conventional example. BEST MODE FOR CARRYING OUT THE INVENTION
• (1) is a jig for heat treatment, in which a mounting portion (3) composed of a plurality of members is formed inside an outer peripheral frame (2) composed of a plurality of components.
• Appropriate processing is performed on the upper surface of the mounting portion (3) to mount the work (4) for heat treatment.
• This processing depends on the heat treatment work (4), which is the target object, and it is necessary to form appropriate unevenness or the like, or to protrude a support (not shown) for placing and holding the work. It will be.
• various types of workpieces for heat treatment (4) are assumed.
• a steel plate is placed at the connection position of the plurality of members and a force, a mark for performing annealing, etc. (4), or a work for drying the surface (4). ), Force, and other work (4) for performing any heat treatment.
• the heat treatment jig (1) forms a square or rectangular outer peripheral frame (2).
• the outer peripheral frame (2) is composed of a plurality of members instead of one member.
• mounting portions (3) for mounting the work (4) on the upper surface are arranged at regular intervals.
• the shape (4) is arranged in a shape suitable for the mounting purpose of the work (4) to be subjected to the heat treatment.
• the extension interval (5) is preferably 1 mm or more: preferably, the interval is 1 mm / lmm, and if the extension interval (5) is larger than 1 mm, the jig (1) As a result, the backlash may occur, resulting in poor accuracy and poor stability when the work (4) is placed. If the extension interval (5) is less than 1/100 mm, the thermal expansion and contraction of the member cannot be absorbed by mutual interference, and distortion will occur.
• this stretching interval (5) between members with lmm to 1/100 mm connect each member via a spacer (9) having a thickness equal to the designed stretching interval, Thereafter, it is formed by various methods such as drawing out a spacer (9).
• the plurality of members forming the outer peripheral frame (2) and the plurality of members forming the mounting portion (3) have through holes (6) formed at their connection portions.
• the connecting shaft (7) is inserted into the through hole (6), and the outer frame (2) and the mounting portion (3) or the outer frame (2) or the mounting portion (3) are mutually connected. Is formed.
• the through hole (6) was formed at 3.3 mm, and the connecting shaft (7) inserted into the through hole (6) was formed with a diameter of 3.2 mm.
• the connecting shaft (7) is formed by rivets forming locking heads (11) at both ends, and the difference between the hole diameter and the diameter of the connecting shaft (7) is 0.1 mm. It is. If the difference between the hole diameters is large, the members constituting the jig (1) will have a large backlash, and if the work (4) is placed, it will be deformed into a peak (4). This is not desirable because it may cause problems. In addition, if the difference between the diameter of the insertion hole (6) and the diameter of the connection shaft (7) is made almost negligible, it will not be possible to cope with the movement accompanying the extension of each member.
• the difference between the diameter of the through hole (6) and the diameter of the connection shaft (7) is 0.2 mn! In one embodiment.
• An interval of about l100 mm is preferred. With this configuration, it is possible to absorb the extension accompanying the thermal expansion of each member together with the extension interval (5). Also, it is possible to minimize the occurrence of rattling or the like when the jig (1) is not heated, and to improve the mounting accuracy of the work (4) mounted on the upper surface. Eliminate instability with Things become possible.
• These members may be connected to each other through an L-shaped angle or square pipe-shaped interposition member (8) as shown in FIG. For example, as shown in the upper left of FIG.
• an L-shaped angle is used as an interposition member (8), and a jig (1) is formed at the corner of the outer peripheral frame (2) by the L-shaped angle.
• the mounting member (8) is arranged.
• An insertion hole (6) is formed through the interposition member (8) and the outer peripheral frame (2), and a connection shaft (7) formed by rivet is inserted into the insertion hole (6) formed through the insertion hole (6). By passing through this, the corners of the outer peripheral frame (2) are connected via the interposition member (8) and laid.
• connection of each member by the connection shaft (7) is, of course, 1 mn! It is performed through an extension interval (5) of about 1/100 mm.
• This extension interval (5) is set to l m rr! As shown in Fig. 2 when each member is connected by the connection shaft (7).
• a spacer (9) having a thickness of about 100 mm and a thickness of about lmm between the members, each member is connected by a connection shaft (7).
• the spacer (9) is pulled out, whereby an extension interval (5) is formed between the members, and the connection is completed.
• the interposition member (8) shown in the downward direction in FIG. 2 uses a square pipe, and in this case also, the through hole (6) and the connection shaft (7) are formed.
• this square interposition member (8) is used to arrange the mounting portion (3) for mounting the work (4) inside the outer peripheral frame (2).
• the distance between the interposition member (8) and the mounting portion (3) and the outer peripheral frame (2) is also lm n! By forming an interval of about l / 100 mm, it is possible to absorb the distortion of the thermal expansion of the interposition member (8) itself and the members such as the outer peripheral frame (2) and the mounting portion (3). It becomes possible.
• the intervening member (8), the outer peripheral frame (2), the mounting portion (3) and the like were formed of a stainless steel plate or the like, and in one embodiment, the plate pressure was 2 mm.
• the connection between the outer peripheral frame (2) and the mounting portion (3) may be made via the interposition member (8), As shown in the above, the mounting portion (3) and the outer peripheral frame (2) may be directly connected without interposing the interposition member (8).
• an L-shaped bent portion (10) is formed at the end of the mounting portion (3), and a through hole (6) is formed in the mounting portion (3) itself.
• the connection shaft (7) is inserted through 6).
• This embodiment has an advantage that the interposition member (8) is unnecessary, but has an L-shaped bent for opening the through hole (6) at the end of the mounting portion (3).
• the part (10) must be formed, and it takes time and effort to form the member.
• the elimination of the interposition member (8) has the advantage that the jig (1) is lightweight, has a small heat capacity, has a small amount of heat energy, and has a fast cooling.
• the thickness of the outer peripheral frame (2) and the mounting portion (3) is 2 mm in the above embodiment, but is not necessarily limited to 2 mm, and may be 1 mm or 0.1 mm. It may have a thickness of about 5 mm.
• the determination of the wall thickness depends on the weight of the workpiece (4) placed on the upper surface, the purpose of placing the workpiece (4), and whether the worker handling the workpiece (4) possesses it during normal work,
• the jig (1) should be thick enough to prevent deformation when transporting. Ideally, the thickness of the jig (1) is preferably made thin as long as it is not deformed by the external force applied to the jig (1) and there is no problem in placing the work (4).
• connection shaft (7) is formed by rivets.
• the connecting shaft (7) may be formed by a bolt nut or the like. In the case of bolts and nuts, workability is somewhat inferior to rivets. Further, the connecting shaft (7) can be formed firmly and cannot be removed from the insertion hole (6).
• a jig (4) for heat treatment is placed on the upper surface of the jig (1), and inserted into a furnace in a high-temperature atmosphere. And heat energy is applied to the jig (1).
• the work (4) is subjected to the necessary heat treatment according to the purpose, and the jig (1) causes thermal expansion of each member due to this heating.
• the expansion is absorbed by the extension interval (5). Is done. When the thermal expansion of each member is absorbed in the extension interval (5), the member moves, but this movement is impossible in this point because the members are movably connected. No swelling absorption takes place.
• each member can be extended independently. Therefore, each member of the jig (1) absorbs thermal expansion independently, and does not cause distortion, deformation, or the like. In addition, since such distortion and deformation do not occur, the jig (1) does not need to be prevented from being deformed by a rigid body configuration, and can be formed thin, so that the jig (1) can be formed in a furnace. Heat energy absorption can be made smaller than conventional products. Therefore, a large amount of heat energy per unit time can be added to the work (4), and the speed of movement in the furnace can be increased. It is possible.
• connection shaft (7) can be removed, if the work (4) is slightly deformed due to long-term use, the work (4) may be subject to external impact.
• the members of the jig (1) are disassembled by removing the connecting shaft (7). If this is restored to its original shape by a press or the like, it can be assembled and used again with the connecting shaft (7), and economic restoration and repair will be possible.
• the formation of the connection shaft (7) so as to be detachable is not limited to the case where the connection shaft (7) is detached by a normal method, such as a bolt nut, but also the case where the connection shaft is connected using a rivet or the like. However, when the rivet can be disassembled by breaking, the connection shaft (7) can be removably connected to the insertion hole (6) so as to be detachable.
• the mounting portion (3) is formed of a plurality of members. However, if the mounting portion (3) has a small area, the amount of thermal expansion and the like is reduced. Since the number is small, even if it is composed of one member connected or integrated, thermal expansion can be absorbed at the extension interval (5) formed between the outer frame and the outer frame (2). Therefore, in the case of the small jig (1), the mounting portion (3) is formed of a single member, so that the configuration of the jig (1) can be simplified and an inexpensive product can be obtained. Things. Industrial applicability
• the present invention is configured as described above, there is no or very little deformation due to thermal distortion of the jig, and the jig can be used for a long period of time. Also, since the work placed on the jig does not undergo deformation due to the thermal distortion of the jig, it is possible to save trouble such as correcting the work after the completion of heat treatment. Enables heat treatment of the work.
• the jig can be formed to be thin, the heat energy absorption of the jig in the furnace is small, and the moving speed of the jig in the furnace can be increased. This enables efficient heat treatment of the workpiece. As a result, it is possible to reduce the heating zone space in the furnace and shorten the heating time.
• jigs having a small heat capacity are easy to cool down to room temperature, and a continuous heat treatment furnace requires less cooling than a conventional jig. Enables zone space and short cooling times.
• the heating furnace can be downsized, the installation area of the heating furnace can be reduced, and the initial cost and the running cost as a whole can be reduced. It is possible to reduce the cost.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• General Engineering & Computer Science (AREA)
• Thermal Sciences (AREA)
• Crystallography & Structural Chemistry (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Optics & Photonics (AREA)
• Heat Treatments In General, Especially Conveying And Cooling (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19097944

Family Applications (1)

Country Status (5)

Families Citing this family (21)

Citations (7)

Family Cites Families (10)

• 2001
  • 2001-09-07 JP JP2001272596A patent/JP5063845B2/ja not_active Expired - Fee Related
• 2002
  • 2002-09-06 WO PCT/JP2002/009116 patent/WO2003027336A1/ja not_active Ceased
  • 2002-09-06 KR KR10-2003-7001786A patent/KR20040048871A/ko not_active Ceased
  • 2002-09-06 US US10/363,178 patent/US6795016B2/en not_active Expired - Lifetime
  • 2002-09-09 TW TW091120408A patent/TW588111B/zh not_active IP Right Cessation

Patent Citations (7)

Also Published As

Similar Documents

Legal Events