KR101626830B1 - Base tray system - Google Patents

Base tray system Download PDF

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Publication number
KR101626830B1
KR101626830B1 KR1020150150313A KR20150150313A KR101626830B1 KR 101626830 B1 KR101626830 B1 KR 101626830B1 KR 1020150150313 A KR1020150150313 A KR 1020150150313A KR 20150150313 A KR20150150313 A KR 20150150313A KR 101626830 B1 KR101626830 B1 KR 101626830B1
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KR
South Korea
Prior art keywords
heat treatment
support tray
carburizing
tray
support
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KR1020150150313A
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Korean (ko)
Inventor
신윤은
Original Assignee
경성산업(주)
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Publication of KR101626830B1 publication Critical patent/KR101626830B1/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

The present invention relates to a base tray system of a carburizing heat treatment material with a base tray supporter formed in a hemispherical shape identical or similar to a floor surface of a heat treatment furnace to easily retain a settled and fixated state. Moreover, first and second corrugations are formed to increase a surface area of a first and a second gap retention member to provide a supporting force against a vertical weight in order to increase product competitiveness. According to the present invention, the base tray system to allow a carburizing process by stably containing a parent material in the carburizing heat treatment furnace comprises: a fixated shaft (310); a supporting tray (320) inserted to the fixated shaft to be fixated on a lower portion thereof, and to be placed on a floor surface of a heat treatment furnace (1); at least one base tray (330) inserted to the fixated shaft (310) in order to place the parent material; and first and second gap retention members (340, 350) provided between the supporting (320) and the base tray (330), and between the base trays (330) to retain the gaps therebetween.

Description

[0001] The present invention relates to a base tray system for a carburizing heat treatment base material,

More particularly, the support portion of the support tray is formed in a hemispherical shape which is the same as or similar to the bottom surface of the heat treatment furnace to maintain easy seating and fixing, And the first and second wrinkles for increasing the surface area of the second gap holding member are provided so as to enhance the competitiveness of the product by providing an easily supporting force against the vertically acting load, .

Generally, since cams and rolls, which are components mounted inside the engines of large ships, can not be replaced once they are installed inside the engine of the ship, they are used semi-permanently until the life of the ship is over. Therefore, components such as large-sized marine cams and rolls should have particularly good physical properties such as hardness and abrasion resistance. However, unlike a small cam mounted inside an engine for an automobile, it is difficult to handle and difficult to heat There are following problems.

The method for heat treatment of the large-sized marine cam and its parts generally uses a carburizing heat treatment method, which is a quenching method in which a raw material is forged and then subjected to a heat-up step, an isothermal step, a heating step, And a method of passing through the steps.

On the other hand, the carburization method does not change the chemical composition of the steel or the amount of alloying elements contained in the steel during the steelmaking process. However, when manufacturing machines, it is sometimes necessary to change the chemical composition of the steel according to the purpose of use. One of the ways of changing these components is surface hardening, which makes the surface hard. The surface hardening is characterized in that the change in chemical composition occurs only in a solid steel and occurs only in the surface layer of the material. In many cases, a surface hardness of a mechanical part requires a material having high abrasion resistance and impact resistance, . These components include gears, cams, and camshafts.

Many of the surface hardening methods include carburizing, nitriding, high frequency quenching and flame quenching, discharge hardening, and metal penetration. The carburizing method is a method of infiltrating carbon on the surface of steel.

The carburizing method is classified into a solid, liquid, and gas carburization method. In the solid carburization method, an alloy layer is formed on the surface by diffusion or penetration of a metal or a non-metal at a high temperature onto the surface of a cast steel. The carburizing agent is mainly composed of 60-70% of charcoal, 20-30% of barium carbonate, and 10% or less of sodium carbonate. The carburizing temperature is controlled by the steel at a temperature of around 900 ℃ for a long time, so that the core structure becomes large, quenching hardens the center structure and hardens the surface layer.

Some carburizing parts do not carburize, but carburize only one part. Such a case is referred to as local carburization, and an anti-carburizing agent is applied to prevent carburization. Currently, copper plating is the most used for the carburizing prevention. It is sufficient that the thickness of the copper plating is about 20 mu m.

In the liquid carburization method, a material to be carburized is immersed in a solution made of a carburizing agent containing NaCl and NaCl as a main component and carburized

The gas carburization method is widely used because it has a higher thermal efficiency and a simpler process than the solid carburization method. Carbon monoxide and hydrocarbon gas such as methane, ethane, propane, and natural gas are mainly used as the gas carburizing agent. Gas carburizing has a shorter carburizing time than solid carburizing. In addition, the carburizing time can be remarkably shortened by using the high-frequency heating at the temperature. When the temperature is maintained at 950 to 1050 ° C by high-frequency heating and the carburizing depth is set at 0.8 to 1.0 mm, this temperature is maintained for about 30 to 40 minutes, so that carburization is sufficiently performed. Also, after carburizing, any kind of gas must be used for secondary heat treatment. The reason for this is that when the carburizing part is made of steel, the deep-part structure is assembled by heating for a long time at a high temperature. In addition, reheat treatment is necessary to prevent the steel from being broken due to the change of the steel structure and to increase the hardness of the surface layer. The re-heat treatment is performed at a temperature of about 850 ° C to 900 ° C, and then the material is cooled again and quenched. Secondly quench at 760 ~ 780 ℃. Finally, it is tempered at 150 ~ 170 ℃.

1, a conventional carburizing heat treatment method includes a heat treatment furnace 1, a lid 2 for opening and closing an upper end of the freezing treatment furnace 1, A receiving tray tray system is constructed.

The support tray system includes a jig support 10 having a flat surface at the bottom surface of the heat treatment furnace 1 and a plurality of base members 3 formed at the upper end of the jig support 10, And a support tray (20).

2, the support tray 20 includes a fixing plate 24 and a fixing shaft 26 erected at the center of the fixing plate 24. As shown in FIG.

The receiving tray 20 includes an insertion base 222 positioned at the center of the base 222 and a lower ring 224 formed at a lower end of the insertion base 222 and having a predetermined size, A plurality of vertical bars 227 fixed between the lower and upper rings 224 and 226 and a plurality of vertical bars 227 fixed between the insertion bars 222 and the lower ring 224 And a plurality of connecting bars 229 connecting between the plurality of partitioning bars 228 to allow the base material to be carburized and heat treated to be seated.

Each of the insertion tray 222, the lower ring 224, the upper ring 226, the vertical bar 227, the partition bar 228, and the connection bar 229 of the support tray 20 And is fixed by welding.

However, as shown in FIG. 3, not only the components of the support tray 20 but also the welded portions formed to connect the components are carburized together with the base material, The welded parts of the component parts of the metal plate 20 are easily broken and the repeated use ratio is lowered, thereby lowering the working efficiency.

Korean Patent Publication No. 503838 (published on July 18, 2005) Korean Patent Publication No. 654695 (published on November 30, 2006) Korean Patent Publication No. 2009-126391 (disclosed on December 9, 2009) Korean Patent Publication No. 2010-105128 (published on September 29, 2010)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above and it is an object of the present invention to provide a support tray of a support tray, There is provided a base tray system for a carburizing heat treatment base material in which first and second wrinkles for increasing the surface area are formed on the two spacing members to provide an easily supporting force against a vertically acting load to enhance product competitiveness There is.

According to an aspect of the present invention, there is provided a support tray system for stably holding a base material in a carburizing heat treatment furnace to perform a carburizing process, the system comprising: a stationary shaft; A support tray inserted into the fixing shaft and fixed to the lower portion of the fixing shaft, the lower portion of the support tray being seated on a bottom surface of the heat treatment furnace; At least one support tray inserted in the fixing shaft and configured to receive the base material; And first and second spacing members configured to maintain a gap between the support tray and the support tray and between the support trays.

In the present invention, the support tray may include: a boss having a third insertion hole formed at a center thereof to receive a fixing shaft; A spindle having a constant length formed at an outer periphery of the boss at equal intervals and radially; And a connection boss which forms a concentric circle at a predetermined interval with the boss and has a fourth insertion hole formed at a position overlapping the spokes; And a connection boss formed on an outer periphery of the spokes and having a fourth insertion hole formed at an overlapping portion thereof,

In the present invention, the first gap retaining member may be formed with a fourth insertion hole into which a fixing shaft is inserted at the center; And a first wrinkle to improve the supporting force against the vertical load at the outer periphery.

In the present invention, the second gap retaining member may include: a body; And an insertion protrusion protruding a predetermined length from each of both ends of the body; The outer periphery of the body includes a second wrinkle so that the supporting force is improved with respect to a vertical load; The second gap holding member is preferably formed in a hollow tube shape so that the weight is minimized.

In the present invention, the support tray and the support tray are preferably formed of stainless steel.

According to the present invention, since the support portion of the support tray is formed in a hemispherical shape which is the same as or similar to the bottom surface of the heat treatment furnace, the first and second spacing members for maintaining the easy seating and fixing state, By forming the second wrinkles, it is possible to provide an easy supporting force for a vertically acting load, thereby enhancing the competitiveness of the product.

The second gap holding member is formed in a hollow tube shape by the second wrinkles to minimize the weight of the second gap holding member to minimize the total weight of the receiving tray system, thereby minimizing an overload acting on the lifting unit.

1 is a schematic cross-sectional view showing a conventional carburizing heat treatment state.
FIG. 2 is a view showing a separation between a jig base and a fixing jig used in a conventional carburizing heat treatment.
3 is a photograph showing a broken state of a fixing jig used in a conventional carburizing heat treatment.
4 is a schematic exploded perspective view of a backing tray system in accordance with the present invention;
5 is a cross-sectional view of the backing tray system according to the present invention;
6 is a side view and plan view of a backing tray according to the present invention;
7 is a schematic cross-sectional view of a second gap retaining member according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like elements throughout the drawings and will not be described in detail.

4 to 7, the support tray system 300 according to the present invention includes a fixed shaft 310, a support tray 320 formed at a lower end of the fixed shaft 310, And a first and a second spacing members 340 and 350 for supporting the support tray 320 and the support tray 330 so that a gap between the support tray 320 and the support tray 330 is maintained do.

The fixing shaft 310 is located at the center of the support tray 320 and the support tray 330 and exerts a supporting force so that the fixing shaft 310 can be easily inserted into and removed from the heat treatment furnace 1.

A fixed end 312 for supporting the lower end of the support tray 320 is formed at a lower end of the fixed shaft 310. Thus, the fixing stage 312 can support and release the heat treatment furnace 1 by providing a supporting force without implementing a fixed manner such as welding, by the support tray 320 inserted into the fixing shaft 310 Do.

The support tray 320 is supported at the lower end of the fixing shaft 310 and supported by the bottom surface of the heat treatment furnace 1.

The support tray 320 has a first insertion hole 322 through which the fixing shaft 310 is inserted.

A first insertion groove 324 through which the fixed end 312 of the fixing shaft 310 is inserted is formed at a lower center of the support tray 320 so as to have a predetermined depth.

In addition, the outer periphery of the support tray 320 includes a support portion 326 having a shape corresponding to that of the support tray 320 so as to be stably supported on the bottom surface of the heat treatment furnace 1. For example, the bottom surface of the heat treatment furnace 1 is formed in a hemispherical shape, and the support portion 326 is formed hemispherically to correspond to the hemispherical shape. Of course, the support portion 326 is not limited thereto, and any shape can be used as long as the support portion 326 can be stably supported on the bottom surface of the heat treatment furnace 1.

A plurality of second insertion holes 328 are formed in the outer peripheral side of the support tray 320 so that one end of the second gap retaining member 350 is inserted and fixed.

In addition, the support tray 320 may be formed of stainless steel (SUS304). This minimizes the deterioration of the material due to carburization during the carburization process, thereby increasing the service life of the support tray 330. [

The support trays 330 are positioned on the support trays 320 and are inserted into the fixation shafts 310 to be stacked to form a base material.

The support tray 330 includes a boss 333 having a third insertion hole 332 formed at the center thereof, a spokes 334 formed radially from the outer circumference of the boss 333, At least one intermediate connection piece 336 concentrically formed at an interval and an outer connection piece 338 forming an outermost edge of the support tray 330.

The support tray 330 is integrally formed. Further, the support tray 330 may be formed of stainless steel (SUS304). This minimizes the deterioration of the material due to carburization during the carburization process, thereby increasing the service life of the support tray 330. [

The boss 333 is formed at the center of the support tray 330 and a third insertion hole 332 through which the fixing shaft 310 is inserted is formed at an intermediate portion.

A second insertion groove 331 having a predetermined depth upward is formed at the lower end of the boss 333.

The spokes 334 are radially formed on the outer periphery of the boss 333, and serve as a support for seating the base material on the upper end.

The number of the spokes 334 is 20 to 26 at equal intervals. Of course, the present invention is not limited thereto, and the number is different according to the size of the support tray 330. [

In addition, a connection boss 335 having a predetermined size is formed at the contact portion of at least one of the intermediate connection piece 336 and the outer connection piece 338 in the spokes 334.

The connection boss 335 amplifies the strength of the connecting portion between the spokes 334 and the intermediate connecting piece 336 and the outer connecting piece 338 so that the durability of the receiving tray 330 is improved.

A fourth insertion hole 337 is formed at the center of the connection boss 335.

The fourth insertion hole 337 is formed by inserting and fixing one end of the second gap holding member 350 that maintains the gap between the fourth insertion hole 337 and the neighboring support trays 330 located on the upper and lower sides, 330 in order to maintain the space between them.

The intermediate connection piece 336 is formed by concentric circles at a predetermined interval in the boss 333 to fix the side portions of the spokes 334 radially extending from the boss 333 to strengthen the supporting force to be.

The intermediate connection piece 336 may also be configured to form a radial spoke 334 between adjacent intermediate connection pieces 336 to conserve the spacing between the plurality of intermediate connection pieces 336, have.

The outer connection piece 338 is a means for forming the outer peripheral edge of the support tray 330. [

The first gap holding member 340 is inserted in the fixing shaft 310 and is formed between the support tray 320 and the support tray 330 and between the support trays 330 to support the gap to be.

The first gap holding member 340 has a fifth insertion hole 342 in which the fixing shaft 310 is inserted.

In addition, the first gap holding member 340 is formed with a first wrinkle 344 at its outer periphery to increase the surface area to improve the supporting force against the vertical load acting in the longitudinal direction.

The first wrinkles 344 are formed by extrusion, press-fitting, or pressing. Of course, the present invention is not limited thereto, and the first wrinkles 344 can be used in any molding method for increasing the surface area of the outer peripheral edge of the first gap holding member 340.

The second gap holding member 350 is a means for maintaining a gap between the support tray 320 and the support tray 330 and the support tray 330.

The second spacing member 350 includes a body 352 and an insertion protrusion 354 protruding at a predetermined length from both ends of the body 352.

The body 352 is formed to have a length for maintaining a distance between the support tray 320 and the support tray 330 and the support trays 330 to thereby provide support force.

The insertion protrusions 354 are formed at both ends of the body 352 to have a predetermined length so that the second insertion holes 328 of the support tray 320 and the fourth insertion holes 337 of the support tray 330 Thereby supporting the body 352 to maintain a stable fixed state.

A second wrinkle 356 is formed on the outer periphery of the body 352. The second wrinkles 356 are formed to increase the surface area of the body 352 so that the supporting force against the vertical load acting on the body 352 in the longitudinal direction is improved.

The second wrinkles 356 are formed by extrusion, press-fitting, or pressing. Of course, the second wrinkles 356 are not limited thereto, and any of the molding methods for increasing the surface area of the second gap holding member 350 with respect to the outer circumference may be used.

In addition, the second gap holding member 350 is formed in a hollow hollow shape. This reduces the weight of the second gap holding member 350, thereby minimizing the weight of the entire support tray system 100. Accordingly, by minimizing the load acting upon lifting the support tray system 100, overload caused by excessive load on the lifting machine is prevented, thereby increasing the service life.

The operation state of the support tray system of the base material for carburizing heat treatment as described above will be described below.

First, the support tray 320 is inserted into the fixed shaft 310. That is, when the fixing shaft 310 is inserted into the first insertion hole 322 of the support tray 320 and the support tray 320 is positioned below the fixing shaft 310, The fixed end 312 of the fixed shaft 310 is inserted into the first insertion groove 324 formed at the lower end of the fixed shaft 310.

The first spacing member 340 is inserted into the fixing shaft 310 so that the first spacing member 340 is seated on the upper center of the supporting tray 320.

An insertion protrusion 354 located below the second gap holding member 350 is inserted into the second insertion hole 328 of the support tray 320 so that the second gap So that the holding member 350 is erected.

In this case, the base material may be placed on the support tray 320.

Subsequently, the support tray 330 is inserted into the fixed shaft 310. That is, the fixing shaft 310 is inserted into the third insertion hole 332 of the support tray 330 and is seated downward.

The upper end of the first spacing member 340 seated on the upper center of the support tray 320 is inserted into the second insertion groove 331 of the support tray 330, The distance between the support tray 320 and the support tray 330 is maintained.

The insertion protrusions 354 formed above the plurality of second spacing members 350 formed on the support tray 320 are inserted into the fourth insertion holes 337 of the support tray 330.

Accordingly, the gap between the support tray 320 and the support tray 330 is stably maintained by the first and second spacing members 340 and 350.

The first and second gap holding members 340 and 350 are provided with first and second wrinkles 344 and 356 to provide a supporting force against the load acting vertically.

As described above, the first and second spacing members 340 and 350 are coupled to the support tray 330 inserted on the fixed shaft 310, and the other one of the supports By inserting the tray 330, the gap between the support trays 330 is maintained.

In the support tray system configured as described above, the support portion 326 of the support tray 320 is formed in a hemispherical shape which is the same as or similar to the bottom surface of the heat treatment furnace 1, so that the support tray 326 can be easily seated and fixed.

In addition, by forming the first and second wrinkles 344 and 356 for increasing the surface area of the first and second gap holding members 340 and 350, it is possible to provide an easy supporting force against a vertically acting load to provide.

The second gap holding member 350 is formed in the shape of a hollow tube by the second wrinkles 256 to minimize the total weight of the bottom tray system 300 by minimizing its own weight so that an overload Is minimized.

The above description is only one embodiment for carrying out the base tray system of the carburizing heat treatment base material, and the present invention is not limited to the above embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

300: support tray system 310: fixed shaft
312: fixed end 320: support tray
322: first insertion hole 324: first insertion groove
326: Support portion 328: Second insertion hole
330: support tray 331: second insertion groove
332: third insertion hole 333: boss
334: Spoke 335: Connecting boss
336: Intermediate connection 337: Fourth insertion ball
338: Outer connection 340: First spacing member
342: fifth insert hole 344: first wrinkle
350: second gap retaining member 352: body
354: insertion projection 356: second wrinkle

Claims (5)

A base tray system for stably holding a base material in a carburizing heat treatment furnace to carry out a carburizing process,
A fixed shaft 310;
A support tray 320 inserted into the fixing shaft 310 and fixed to the lower portion of the fixing shaft 310 and having a lower portion placed on a bottom surface of the heat treatment furnace 1;
At least one support tray (330) inserted into the fixed shaft (310) and configured to receive the base material;
And first and second spacing members (340) (350) formed between the support trays (320) and the support trays (330) and between the support trays (330)
The support tray 330 includes a boss 333 formed with a third insertion hole 332 through which the fixing shaft 310 is inserted in the center;
A spoke 334 formed at a constant length in the radial direction with equal intervals at the outer periphery of the boss 333;
An intermediate connecting piece 336 including a connecting boss 335 concentrically formed at a predetermined distance from the boss 333 and having a fourth insertion hole 337 formed at a position overlapping the spokes 334; And
An outer connecting piece 338 formed at the outer periphery of the spokes 334 and having a connecting boss 335 in which a fourth insertion hole 337 is formed at the overlapping portion;
Wherein the carburizing tray system of the base material for carburizing heat treatment is characterized by comprising:
delete [3] The apparatus of claim 1, wherein the first gap holding member (340)
A fifth insertion hole 342 through which the fixing shaft 310 is inserted is formed at the center;
A first wrinkle 344 for enhancing the supporting force against the vertical load on the outer periphery;
Wherein the carburizing tray system of the base material for carburizing heat treatment is characterized by comprising:
[3] The apparatus according to claim 1, wherein the second gap holding member (350)
A body 352; And
And an insertion protrusion (354) protruding by a predetermined length at both ends of the body (352);
And a second wrinkle (356) on the outer periphery of the body (352) so that a supporting force against the vertical load is improved;
The second gap holding member 350 may have a hollow tube shape to minimize weight.
Wherein the base material of the base material for the carburization heat treatment is formed of a metal material.
The method according to any one of claims 1 to 3,
The support tray 320 and the support tray 330 are made of stainless steel;
Wherein the base material is formed of a metal material.
KR1020150150313A 2015-10-28 2015-10-28 Base tray system KR101626830B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112281108A (en) * 2020-10-29 2021-01-29 南京国重新金属材料研究院有限公司 High-temperature nitriding treatment device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100503838B1 (en) 1996-12-09 2005-10-21 신토고교 가부시키가이샤 Gas Carburizing Furnace Parts and Jigs
KR100654695B1 (en) 2006-05-04 2006-12-06 주식회사 성도 Method for heat treatment of cam and the parts for a large ship
KR20090126391A (en) 2008-06-04 2009-12-09 에스티엑스중공업 주식회사 Manufacturing method of cam for low-speed marine engines
KR20100105128A (en) 2009-03-20 2010-09-29 배진범 Muliti-purpose plasma heat-treatment apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100503838B1 (en) 1996-12-09 2005-10-21 신토고교 가부시키가이샤 Gas Carburizing Furnace Parts and Jigs
KR100654695B1 (en) 2006-05-04 2006-12-06 주식회사 성도 Method for heat treatment of cam and the parts for a large ship
KR20090126391A (en) 2008-06-04 2009-12-09 에스티엑스중공업 주식회사 Manufacturing method of cam for low-speed marine engines
KR20100105128A (en) 2009-03-20 2010-09-29 배진범 Muliti-purpose plasma heat-treatment apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112281108A (en) * 2020-10-29 2021-01-29 南京国重新金属材料研究院有限公司 High-temperature nitriding treatment device

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