CN112359197A - Tray for large heat treatment gas furnace - Google Patents
Tray for large heat treatment gas furnace Download PDFInfo
- Publication number
- CN112359197A CN112359197A CN202011246879.XA CN202011246879A CN112359197A CN 112359197 A CN112359197 A CN 112359197A CN 202011246879 A CN202011246879 A CN 202011246879A CN 112359197 A CN112359197 A CN 112359197A
- Authority
- CN
- China
- Prior art keywords
- tray
- parts
- heat treatment
- gas furnace
- large heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 37
- 229910001220 stainless steel Inorganic materials 0.000 claims description 18
- 239000010935 stainless steel Substances 0.000 claims description 18
- 238000005266 casting Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004513 sizing Methods 0.000 abstract description 19
- 238000001816 cooling Methods 0.000 abstract description 9
- 238000010791 quenching Methods 0.000 abstract description 8
- 230000000171 quenching effect Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000001788 irregular Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
-
- 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
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
-
- 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
-
- 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
Landscapes
- 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 Treatments In General, Especially Conveying And Cooling (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
The invention discloses a tray for a large heat treatment gas furnace, which comprises a trolley, wherein a plurality of sizing blocks are sequentially arranged on the surface of the trolley body side by side, a flame nozzle is arranged between every two adjacent sizing blocks in the plurality of sizing blocks, and the tray is arranged on the surfaces of the plurality of sizing blocks; the tray not only solves the problems of placing and heating of small and medium-sized parts in a large gas furnace, but also solves the problems of simultaneous heating and quenching cooling of batch parts, and greatly improves the charging amount of the large gas furnace and the heat treatment efficiency of the small parts; the problem that special tools need to be manufactured when the special-shaped parts are quenched in a heat treatment process is solved, the tray can be used for assembling the parts in various irregular shapes, the tray lifting lugs are directly lifted by iron chains to rapidly enter cooling media together with the parts, and manufacturing cost of the tools is greatly reduced.
Description
Technical Field
The invention relates to the technical field of heat treatment, in particular to a tray for a large heat treatment gas furnace.
Background
A large heat treatment gas furnace is a common and indispensable heating device in the technical field of heat treatment, and is characterized in that a workpiece is placed in a gas furnace chamber, a flame nozzle in the gas furnace chamber is used for heating, and the workpiece is heated through heat conduction; generally, a plurality of flame nozzles are arranged in a large-scale gas furnace, in order to avoid direct burning of workpieces by the flame nozzles, a sizing block with a certain height is required to be placed on the trolley surface of the furnace chamber, then the workpieces are placed on the sizing block, a distance of 400 plus 500mm is reserved before the sizing block so that flame can pass through gaps between the sizing blocks, the purpose of uniformly heating the parts is achieved, generally, large-scale long-axis parts can be directly placed on the sizing block for heating, and two ends of the parts can be directly lifted during quenching and cooling; however, the common small and medium-sized parts cannot be directly placed on the sizing block, and the parts must be placed on a special tool, and then the tool is placed on the sizing block to achieve the purposes of heating, hoisting, quenching and cooling the parts; on the other hand, part of the special-shaped parts are inconvenient to directly lift in a high-temperature state, and the special-shaped parts are required to be placed on a special tool and then lifted for quenching and cooling, so that the special tool is very necessary to be invented.
Disclosure of Invention
The invention aims to provide a tray for a large heat treatment gas furnace, which solves the problems of placing and heating of medium and small parts and part of special-shaped parts in the large heat treatment gas furnace and the lifting problem in the quenching and cooling process.
The technical scheme includes that the tray for the large heat treatment gas furnace comprises a trolley, a plurality of sizing blocks are sequentially arranged on the surface of the trolley body side by side, a flame nozzle is arranged between every two adjacent sizing blocks in the plurality of sizing blocks, and the tray is arranged on the surfaces of the plurality of sizing blocks.
The invention is also characterized in that:
wherein, one side of the tray is also provided with a lifting lug;
the tray is also internally provided with a stainless steel round bar which is positioned in the lifting lug;
wherein the stainless steel round bar is a heat-resistant stainless steel round bar of 0Cr18Ni9 Ti;
wherein the surface of the tray is a latticed tray, and rib plates are arranged between adjacent grids;
wherein the tray is ZG230-450 steel castings.
The invention has the beneficial effects that:
the tray for the large heat treatment gas furnace not only solves the problems of placing and heating of small and medium-sized parts in the large gas furnace, but also solves the problems of simultaneous heating and quenching cooling of batch parts, and greatly improves the charging amount of the large gas furnace and the heat treatment efficiency of the small parts; the problem that special tools need to be manufactured when the special-shaped parts are quenched in a heat treatment process is solved, the tray can be used for assembling the parts in various irregular shapes, the tray lifting lugs are directly lifted by iron chains to rapidly enter cooling media together with the parts, and manufacturing cost of the tools is greatly reduced.
Drawings
FIG. 1 is a schematic view showing an installation position of a tray for a large heat-treating gas furnace of the present invention in the gas furnace;
FIG. 2 is a top plan view of a tray for a large heat-treating gas burner of the present invention;
FIG. 3 is a left side schematic view of a tray for a large heat treating gas burner of the present invention;
fig. 4 is a flow chart of the casting of a tray for a large heat-treating gas furnace of the present invention using ZG230-450 material.
In the figure, 1, a sizing block, 2, a flame nozzle, 3, a tray, 4, a trolley, 5, a stainless steel core rod and 6, lifting lugs are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention provides a tray for a large heat treatment gas furnace, as shown in figure 1, a plurality of sizing blocks 1 are sequentially arranged on a trolley 4 in the gas furnace at intervals, flame nozzles 2 are arranged at the space positions between the adjacent sizing blocks 1, the tray 3 is placed on the plurality of sizing blocks 1, under the jet heating of the flame nozzles 2, the tray 3 is heated, and a plurality of parts can be placed on the tray 3 for heating at the same time;
as shown in the figures 2 and 3, the tray 3 is a steel casting, the selected material is ZG230-450, and the main chemical components of the material are C less than or equal to 0.3%, Si less than or equal to 0.5%, Mn less than or equal to 0.5%, P and S less than or equal to 0.04%, Cr less than or equal to 0.35%, Ni less than or equal to 0.3%, and Mo less than or equal to 0.2%; when the tray is made of the material, a series of processes such as molding, smelting, casting and the like are required, firstly, a sand mold cavity with the size of the tray is made, iron ore raw materials are heated to 1550 ℃ by a refining furnace to be melted and then poured, and finally, related later-stage cleaning and detection are carried out, wherein the specific preparation process is shown in figure 4; when the tray of the steel casting is repeatedly heated along with a workpiece, because the carbon content of the material is low, the tray is heated in the furnace for many times, no crack or fracture is generated no matter the tray is cooled by water, oil or water-soluble quenching agent, the tray can be quenched and cooled along with parts made of different materials, and the reusability is good; although the tray is gradually lost after being heated at high temperature for a long time, the cost of the material is low, each tray can be repeatedly used for about 80-100 times at 800-1000 ℃, and the cost is greatly reduced compared with the cost for manufacturing a disposable special tool;
as shown in fig. 2, the tray of the present invention is mainly divided into two parts in terms of structural composition, and is composed of a heat-resistant stainless steel round bar 5 and a tray 3, wherein the heat-resistant stainless steel round bar 5 is added into a casting cavity, and is fixed inside a lifting lug 6 during casting;
the stainless steel round bar 5 is a heat-resistant stainless steel round bar made of 0Cr18Ni9Ti, the diameter of the heat-resistant stainless steel round bar is determined according to the diameter of a lifting lug, the diameter of the general lifting lug is about 100-120 mm, the lifting lug is convenient to lift and suspend an iron chain when in use, the material belongs to the austenitic stainless steel category and is common in the market, for example, one round bar in the market can be selected within the range of 0.5-800 mm; the material has an atomic structure of face-centered cubic under high temperature, has high dimensional stability, corrosion resistance and high temperature resistance, and comprises the following main chemical components: less than or equal to 0.07 percent of C, less than or equal to 1.0 percent of Si, less than or equal to 2.0 percent of Mn, less than or equal to 0.03 percent of P and S, Cr: 17-19%, Ni: 8-11%, Ti: 0.5-0.7%; specific heat capacity: 0.5 × 1000J (kg.k), thermal conductivity: 0.15 multiplied by 100W/(cm.k), the material has high molecular bond strength, small thermal expansion coefficient, small deformation degree after being heated at high temperature, less high-temperature oxidation decarburization, good service performance at a high-temperature stage, no large deformation when being subjected to high temperature, and no more oxidation decarburized layer, and the addition of the stainless steel round rod 5 can prevent the lifting lug 6 from deforming too much when being lifted by the crane, so that the lifting weight of the lifting lug is increased, and the tray 3 is ensured not to deform and damage.
Tray 3 is being designed into latticed, and the overall dimension of tray 3 has been decided to the size and the quantity of net, and the gusset between the net has the support reinforcement effect to the tray, has guaranteed its non-deformable's characteristic, also plays the effect that the isolation support prevented dropping to little part. And the heat of the tray 3 can fully penetrate through the tray 3 in the heating process to achieve the purpose of uniformly heating the parts. The tray can be manufactured aiming at small parts and large parts, the thickness of the tray rib plate specially used for mounting the small parts can be properly reduced, the thickness of the rib plate specially used for mounting the large parts can be properly increased, the size of the grid can be adjusted according to the size of the mounted parts, and the tray can be manufactured into a special small and large tray. Therefore, the method is flexible and targeted, and the purposes of classifying and reducing the cost can be achieved.
The tray solves the problems of placing and heating of small and medium-sized parts and part of special-shaped parts in a large heat treatment gas furnace and lifting in the quenching and cooling process. The tray is divided into a tray 3 and a heat-resistant stainless steel round bar 5, the grid shape of the tray 3 can support the placement of small parts, and heat can fully pass through the tray up and down during heating, so that the parts are heated uniformly; the heat-resistant stainless steel round bar 5 is embedded in the lifting lug of the tray, the high-temperature strength of the lifting lug is effectively increased due to the good high-temperature resistance and the good strength of the heat-resistant stainless steel round bar, the whole lifting weight of the tray is further increased, the ZG230-450 material adopted by the tray does not generate any hardness and cracks after being quenched along with the heat treatment of a workpiece, the heat-resistant stainless steel round bar can be subjected to heat treatment together with parts made of any materials, and the tray has wide applicability, low price and good reusability. The tray effectively improves the charging amount of the large heat treatment gas furnace, improves the charging mode of medium and small parts in the large gas furnace, reduces the unit consumption of the natural gas of the parts per ton, and saves the special tooling cost for lifting special-shaped parts.
Claims (6)
1. The utility model provides a tray for large-scale heat treatment gas furnace, includes platform truck (4), and platform truck (4) automobile body surface has set gradually a plurality of parallels (1), and is a plurality of all be provided with flame nozzle (2) between two adjacent parallels (1) in parallels (1), its characterized in that still includes tray (3), tray (3) set up in the surface of a plurality of parallels (1).
2. A tray for large heat treating gas burners according to claim 1 characterized in that a lifting lug (6) is also provided on one side of the tray (3).
3. A tray for large heat-treating gas furnaces according to claim 1 or 2 characterized in that stainless steel round bars (5) are also arranged in the tray (3), and the stainless steel round bars (5) are positioned in the lifting lugs (6).
4. A tray for large heat-treating gas furnaces according to claim 1 or 2 characterized in that the stainless steel round bar (5) is a heat resistant stainless steel round bar of 0Cr18Ni9 Ti.
5. A tray for large heat-treating gas furnaces according to claim 1 characterized in that the surface of the tray (3) is a grid tray with ribs between adjacent grids.
6. A tray for large heat-treating gas burners according to claim 1, characterised in that said tray (3) is ZG230-450 steel casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011246879.XA CN112359197A (en) | 2020-11-10 | 2020-11-10 | Tray for large heat treatment gas furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011246879.XA CN112359197A (en) | 2020-11-10 | 2020-11-10 | Tray for large heat treatment gas furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112359197A true CN112359197A (en) | 2021-02-12 |
Family
ID=74508731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011246879.XA Pending CN112359197A (en) | 2020-11-10 | 2020-11-10 | Tray for large heat treatment gas furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112359197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114891988A (en) * | 2022-06-01 | 2022-08-12 | 安徽应流集团霍山铸造有限公司 | Be used for box gas furnace dress stove tray frock |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978109A (en) * | 1988-01-15 | 1990-12-18 | Societe Mancelle De Fonderie | Unitary construction multideck tray device for heat treatment of shafts or like members |
| CN201873716U (en) * | 2010-11-27 | 2011-06-22 | 无锡宏达重型锻压有限公司 | Heat treatment tray |
| CN109252034A (en) * | 2018-11-27 | 2019-01-22 | 兴化市东昌合金钢有限公司 | A kind of combination charging tray of heat-treatment furnace |
| CN110541063A (en) * | 2019-10-10 | 2019-12-06 | 吴江华宏真空科技有限公司 | Combined multifunctional quenching clamp |
| CN110819784A (en) * | 2019-10-17 | 2020-02-21 | 中冶陕压重工设备有限公司 | Sizing block for heat treatment gas furnace |
| CN211199287U (en) * | 2019-11-11 | 2020-08-07 | 辽宁科宇机械装备制造股份有限公司 | Gas heat treatment furnace |
-
2020
- 2020-11-10 CN CN202011246879.XA patent/CN112359197A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978109A (en) * | 1988-01-15 | 1990-12-18 | Societe Mancelle De Fonderie | Unitary construction multideck tray device for heat treatment of shafts or like members |
| CN201873716U (en) * | 2010-11-27 | 2011-06-22 | 无锡宏达重型锻压有限公司 | Heat treatment tray |
| CN109252034A (en) * | 2018-11-27 | 2019-01-22 | 兴化市东昌合金钢有限公司 | A kind of combination charging tray of heat-treatment furnace |
| CN110541063A (en) * | 2019-10-10 | 2019-12-06 | 吴江华宏真空科技有限公司 | Combined multifunctional quenching clamp |
| CN110819784A (en) * | 2019-10-17 | 2020-02-21 | 中冶陕压重工设备有限公司 | Sizing block for heat treatment gas furnace |
| CN211199287U (en) * | 2019-11-11 | 2020-08-07 | 辽宁科宇机械装备制造股份有限公司 | Gas heat treatment furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114891988A (en) * | 2022-06-01 | 2022-08-12 | 安徽应流集团霍山铸造有限公司 | Be used for box gas furnace dress stove tray frock |
| CN114891988B (en) * | 2022-06-01 | 2024-05-28 | 安徽应流集团霍山铸造有限公司 | Be used for box gas furnace charging tray frock |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210212 |
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| RJ01 | Rejection of invention patent application after publication |