CN206783748U - Annealing device for the experiment of autstenitic grain size acieration - Google Patents
Annealing device for the experiment of autstenitic grain size acieration Download PDFInfo
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- CN206783748U CN206783748U CN201720572165.5U CN201720572165U CN206783748U CN 206783748 U CN206783748 U CN 206783748U CN 201720572165 U CN201720572165 U CN 201720572165U CN 206783748 U CN206783748 U CN 206783748U
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Abstract
A kind of annealing device for the experiment of autstenitic grain size acieration is the utility model is related to, comprising：Tank body；Solid carburizer, it is arranged on the inside of tank body；Breathable membrane, it is fixedly installed on the madial wall of tank body, and positioned at the top of solid carburizer, for putting multiple specimen samples not contacted each other；Closure, covering are arranged on the top of tank body, tank body are sealed；Wherein, described solid carburizer includes：Energizer, it is laid on the bottom of tank body；Activated carbon, the top of energizer is laid on, and positioned at the lower section of breathable membrane.The utility model can realize the experiment of autstenitic grain size acieration in the chamber type electric resistance furnace of routine, can reduce experimentation cost, improve test efficiency；And carburizing thermal treatment quality is good, carburized layer is uniform, meets the examination requirements of the autstenitic grain size of acieration.
Description
Technical field
The utility model is related to a kind of annealing device, in particular to it is a kind of for autstenitic grain size acieration experiment
Annealing device, belong to the technical field of physical test heat treatment equipment.
Background technology
Grain size is to characterize a kind of measurement of metal grain size dimension.And the size of metal material crystal grain, it is processed
Performance, mechanical performance, physical property, heat-and corrosion-resistant performance all have an impact.Therefore, in metallicity analysis, grain size（
It is exactly crystallite dimension）Estimation seem particularly significant.Wherein, detection autstenitic grain size refers to Steel material in austenitizing temperature
The grain size measured after being incubated a period of time on degree, is to characterize the trend that certain crystalline grain of steel is grown up, and Grain growth trend is to system
It is critically important to determine Technology for Heating Processing.
For carbon content（Mass fraction）≤ 0.25% carbon steel and steel alloy, provide to make in standard GB/T/T6394
Sample is heat-treated so as to form austenite crystal with acieration.Provide in standard, be placed on sample by acieration
It is heat-treated in defined temperature and time so that specimen surface forms hypereutectoid layer tissue, and obtains more than 1mm carburizing
Layer.
Industrially, it is heat-treated usually using controlled atmosphere and the professional carburizing for stablizing carbon potential using acieration
Stove, or by the way that sample is embedded into solid carburizer（It is made up of charcoal plus accelerator）Pack carburizing heat treatment mode carry out.
But in checkout procedure, because laboratory will not typically be equipped with the Equipment for Heating Processing of professional carburizer type, and it is only common
Box resistor furnace for heat treatment is available, and the operation price of these modes is also very expensive.In addition, if using pack carburizing
Mode is readily able to cause the uneven of carburizing so that sample is locally carbon-free or poor carbon, or even decarburization.
Based on above-mentioned, in order to improve checkability, reduce inspection cost, need badly at present propose a kind of annealing device and its
Application method, without the carburizing heat-treatment furnace using specialty, autstenitic grain size can be realized in the chamber type electric resistance furnace of routine
The experiment of acieration.
Utility model content
The purpose of this utility model is to provide a kind of annealing device for the experiment of autstenitic grain size acieration, can
The experiment of autstenitic grain size acieration is realized in the chamber type electric resistance furnace of routine, experimentation cost can be reduced, improves test efficiency；
And the carburizing thermal treatment quality of specimen sample is good, carburized layer is uniform, meets the examination requirements of the autstenitic grain size of acieration.
To achieve the above object, the utility model provides a kind of heat treatment dress for the experiment of autstenitic grain size acieration
Put, carburized layer can be formed on the surface of specimen sample, comprising：Tank body；Solid carburizer, it is arranged on the inside of tank body；It is ventilative every
Plate, it is fixedly installed on the madial wall of tank body, and positioned at the top of solid carburizer, for putting multiple examinations not contacted each other
All product；Closure, covering are arranged on the top of tank body, tank body are sealed；Wherein, described solid carburizer includes：
Energizer, it is laid on the bottom of tank body；Activated carbon, the top of energizer is laid on, and under breathable membrane
Side.
Described solid carburizer by 30%~40% energizer, and 60%~70% activated carbon composition；And ooze
C catalyst uses Na2CO3And/or BaCO3So that carburized (case) depth reaches more than 1mm.
The consistent air-vent of multiple size shapes is uniformly offered on described breathable membrane.
The outer ring of described closure is provided with annular boss, and the annular boss surrounds the top side wall position for being arranged on tank body
Put, coordinate under room temperature state between the side wall of tank body for gap.
Described tank body and closure are made of nickel-iron-chromium high-temperature material, at high operating temperatures, the side wall of the tank body
It is interference fit between the annular boss of closure.
Annealing device provided by the utility model for the experiment of autstenitic grain size acieration, can be in routine
The experiment of autstenitic grain size acieration is realized in chamber type electric resistance furnace, experimentation cost can be reduced, improves test efficiency；And utilize
The carburizing thermal treatment quality of the autstenitic grain size specimen sample of the utility model processing is good, and carburized layer is uniform, can be in table
Face obtains hypereutectoid layer tissue, will not cause locally carbon-free specimen sample, poor carbon and the phenomenon of decarburization, and carburized (case) depth reaches
More than 1mm, fully meet the examination requirements of the autstenitic grain size of acieration.
Brief description of the drawings
Fig. 1 is the section signal of the annealing device for being used for the experiment of autstenitic grain size acieration in the utility model
Figure；
Fig. 2 is the schematic top plan view of the breathable membrane in the utility model.
Embodiment
Below in conjunction with Fig. 1~Fig. 2, a preferred embodiment of the present utility model is described in detail.
As shown in figure 1, for the annealing device provided by the utility model for the experiment of autstenitic grain size acieration, can
Carburized layer is formed on the surface of specimen sample 5, comprising：Tank body 1；Solid carburizer, it is arranged on the inside of tank body 1；Breathable membrane
4, it is fixedly installed on the madial wall of tank body 1, and positioned at the top of solid carburizer, for putting multiple specimen samples 5；Sealing
Lid 6, covering are arranged on the top of tank body 1, tank body 1 are sealed；Wherein, described solid carburizer includes：Carburizing is catalyzed
Agent 2, it is laid on the bottom of tank body 1；Activated carbon 3, the top of energizer 2 is laid on, and positioned at the lower section of breathable membrane 4.
As shown in Fig. 2 the consistent air-vent 41 of multiple size shapes is uniformly offered on described breathable membrane 4.This reality
Apply in example, the shape of each air-vent 41 on breathable membrane 4 is hexagon, and between air-vent 41 adjacent two-by-two between
Every equal.Certainly, in other preferred embodiments, the shape of the air-vent 41 is not limited thereto, and it also can be circle
Shape, or ellipse, or other are variously-shaped for square etc..
The outer ring of described closure 6 is provided with annular boss 61, and the annular boss 61 surrounds the side wall for being arranged on tank body 1
Tip position, coordinate under room temperature state between the side wall of tank body 1 for gap, in order to dismantle assembling.
Described tank body 1 and closure 6 are made of nickel-iron-chromium high-temperature material, have heat using nickel-iron-chromium high-temperature material
The characteristics of coefficient of expansion is high, at high operating temperatures, will be by gap between the side wall of the tank body 1 and the annular boss 61 of closure 6
Cooperation is changed into being interference fitted, so as to realize relative sealing effectiveness.
The described each specimen sample 5 being placed on breathable membrane 4 not can contact mutually each other, otherwise will influence
The accuracy of the result of the test of autstenitic grain size acieration.
Described solid carburizer is by 30%~40% energizer 2, and 60%~70% activated carbon 3 forms；And
Energizer 2 uses Na2CO3And/or BaCO3So that carburized (case) depth reaches more than 1mm.
In multiple preferred embodiments of the present utility model, solid carburizer can by 30% BaCO3With 70% activated carbon
Composition so that carburized (case) depth reaches 1.15mm.Or solid carburizer can by 40% BaCO3Activated carbon with 60% forms,
So that carburized (case) depth reaches 1.58mm.Or solid carburizer can by 30% Na2CO3Activated carbon with 70% forms so that
Carburized (case) depth reaches 1.65mm.Or solid carburizer can by 40% Na2CO3Activated carbon with 60% forms so that carburizing
Layer depth reaches 2.05mm.Or solid carburizer can by 20% BaCO3, 20% Na2CO3Activated carbon with 60% forms, and makes
Obtain carburized (case) depth and reach 2.01mm.
Annealing device provided by the utility model for the experiment of autstenitic grain size acieration, its specifically used side
Method comprises the steps of：
S1, as shown in figure 1, the energizer 2 in solid carburizer to be laid on to the bottom of tank body 1；By pack carburizing
Activated carbon 3 in agent is laid on the top of energizer 2, and positioned at the lower section of breathable membrane 4；By multiple specimen samples 5 that
This is discontiguous to be placed on breathable membrane 4；The top that the covering of closure 6 is arranged on to tank body 1 is sealed；
S2, the annealing device tested for autstenitic grain size acieration is put into conventional chamber type electric resistance furnace；
During the condition of high temperature, the CO that is decomposited positioned at the energizer 2 of the bottom of tank body 12Occur with the activated carbon 3 being positioned above instead
Should, synthesize CO and form stable carbon potential atmosphere around specimen sample 5 by breathable membrane 4, the mode of simulated atmosphere carburizing,
Carburized layer is formed on the surface of specimen sample 5, completes the acieration experiment of autstenitic grain size.
In described S1, the outer ring of closure 6 is provided with annular boss 61, and the annular boss 61 surrounds and is arranged on tank body 1
Top side wall position, under room temperature state between the side wall of tank body 1 for gap coordinate, assembling easy to disassemble.
Described tank body 1 and closure 6 are made of nickel-iron-chromium high-temperature material；In described S2, at high operating temperatures,
It is interference fit between the side wall of tank body 1 and the annular boss 61 of closure 6, to realize relative sealing effectiveness.
Based on above-mentioned, the annealing device provided by the utility model for the experiment of autstenitic grain size acieration, lead to
Cross different solid carburizers（Energizer and activated carbon）According to certain ratio and putting position, sample sample is laid on
Below product, in the tank body space of opposing seal, the carbon atom of activity, i.e. stable carbon potential atmosphere, simulation are produced at high temperature
The mode of atmosphere carburizing, complete the acieration experiment of the autstenitic grain size of specimen sample.Also, utilize nickel-iron-chromium high-temperature material
Thermal coefficient of expansion it is high the characteristics of so that tank body and closure are at high operating temperatures interference fit, relative close so as to reach
Seal effect；And recover gap under room temperature state and coordinate, easily disassembled assembling.
Therefore, the annealing device provided by the utility model for the experiment of autstenitic grain size acieration, Neng Gou
The experiment of autstenitic grain size acieration is realized in conventional chamber type electric resistance furnace, experimentation cost can be reduced, improves test efficiency；
The carburizing thermal treatment quality of the autstenitic grain size specimen sample handled using the utility model is good, and carburized layer is uniform, can be with
Hypereutectoid layer tissue is obtained on surface, locally carbon-free specimen sample, poor carbon and the phenomenon of decarburization, and carburized (case) depth will not be caused
Reach more than 1mm, fully meet the examination requirements of the autstenitic grain size of acieration.
Although content of the present utility model is discussed in detail by above preferred embodiment, but it should be appreciated that on
The description stated is not considered as to limitation of the present utility model.After those skilled in the art have read the above, for
A variety of modifications and substitutions of the present utility model all will be apparent.Therefore, the scope of protection of the utility model should be by appended
Claim limit.
Claims (5)
1. a kind of annealing device for the experiment of autstenitic grain size acieration, can be in specimen sample（5）Surface formed ooze
Carbon-coating, it is characterised in that include：
Tank body（1）；
Solid carburizer, it is arranged on tank body（1）Inside；
Breathable membrane（4）, it is fixedly installed on tank body（1）Madial wall on, and positioned at solid carburizer top, it is more for putting
The individual specimen sample not contacted each other（5）；
Closure（6）, cover and be arranged on tank body（1）Top, to tank body（1）Sealed；
Wherein, described solid carburizer includes：Energizer（2）, it is laid on tank body（1）Bottom；Activated carbon（3）, paving
It is located at energizer（2）Top, and be located at breathable membrane（4）Lower section.
2. the annealing device for the experiment of autstenitic grain size acieration as claimed in claim 1, it is characterised in that described
Solid carburizer by 30%~40% energizer（2）, and 60%~70% activated carbon（3）Composition；And carburizing is catalyzed
Agent（2）Using Na2CO3And/or BaCO3So that carburized (case) depth reaches more than 1mm.
3. the annealing device for the experiment of autstenitic grain size acieration as claimed in claim 1, it is characterised in that described
Breathable membrane（4）On uniformly offer the consistent air-vent of multiple size shapes（41）.
4. the annealing device for the experiment of autstenitic grain size acieration as claimed in claim 1, it is characterised in that described
Closure（6）Outer ring be provided with annular boss（61）, the annular boss（61）Around being arranged on tank body（1）Top side wall
Position, under room temperature state with tank body（1）Side wall between for gap coordinate.
5. the annealing device for the experiment of autstenitic grain size acieration as claimed in claim 4, it is characterised in that described
Tank body（1）And closure（6）It is made of nickel-iron-chromium high-temperature material, at high operating temperatures, the tank body（1）Side wall with it is close
Capping（6）Annular boss（61）Between for interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720572165.5U CN206783748U (en) | 2017-05-22 | 2017-05-22 | Annealing device for the experiment of autstenitic grain size acieration |
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| CN201720572165.5U CN206783748U (en) | 2017-05-22 | 2017-05-22 | Annealing device for the experiment of autstenitic grain size acieration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106967946A (en) * | 2017-05-22 | 2017-07-21 | 上海电气核电设备有限公司 | The annealing device and its application method tested for autstenitic grain size acieration |
| CN111139429A (en) * | 2020-02-19 | 2020-05-12 | 株洲肯特硬质合金有限公司 | Method for carburizing hard alloy by utilizing carbon-containing gas cracked in sintering process |
| CN111206202A (en) * | 2020-02-19 | 2020-05-29 | 株洲肯特硬质合金有限公司 | Method for preparing cobalt phase gradient hard alloy by carburizing treatment |
-
2017
- 2017-05-22 CN CN201720572165.5U patent/CN206783748U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106967946A (en) * | 2017-05-22 | 2017-07-21 | 上海电气核电设备有限公司 | The annealing device and its application method tested for autstenitic grain size acieration |
| CN111139429A (en) * | 2020-02-19 | 2020-05-12 | 株洲肯特硬质合金有限公司 | Method for carburizing hard alloy by utilizing carbon-containing gas cracked in sintering process |
| CN111206202A (en) * | 2020-02-19 | 2020-05-29 | 株洲肯特硬质合金有限公司 | Method for preparing cobalt phase gradient hard alloy by carburizing treatment |
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