CN2367620Y - Compound bearer for steel blank heating furnace of steel rooling mill - Google Patents
Compound bearer for steel blank heating furnace of steel rooling mill Download PDFInfo
- Publication number
- CN2367620Y CN2367620Y CN 99211862 CN99211862U CN2367620Y CN 2367620 Y CN2367620 Y CN 2367620Y CN 99211862 CN99211862 CN 99211862 CN 99211862 U CN99211862 U CN 99211862U CN 2367620 Y CN2367620 Y CN 2367620Y
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- heating furnace
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Abstract
The utility model relates to a compound cushion block for a billet heating furnace in a rolling mill. The cushion block has a metallic integral structure that zones at an upper and a lower two parts have different alloy chemical components. Compared with the prior art, the utility model has the advantages that the utility model has good mechanical intensity, heat-transfer performance and integral rigidity, and long service life; each item of service performance of the utility model corresponds to the service performance of a conventional integral cushion block which is only made form high-performance heat-resisting alloy. In production, the utility model can save rare expensive metallic material, and can obviously reduce device cost.
Description
The utility model relates to a kind of Steel Mill and rolls the cushion block that preceding billet heating furnace is used, especially a kind of composite heel block for billet heating furnace.
In a row fix the cushion block of justifying (platform) cylindricality cushion block (button), slide rail shape cushion block (skid button) or other shape of certain altitude being arranged on the furnace bottom support beam of billet heating furnace, described cushion block is to support the key part that is heated steel billet and guarantees the steel billet heating quality.Cushion block generally adopts the cobalt-base alloy material monolithic to make at present, so the cost costliness.Adopt composite block can significantly reduce manufacturing cost.In the prior art, composite block is that the cushion block seat by the cushion block head of cobalt-base alloy system and heat-resisting steel is linked together by physical construction, this structure makes the integral rigidity variation of this composite block on the one hand, be easy to generate displacement between cushion block head and the cushion block seat at work, and cause the accident of cushion block head loose or dislocation.On the other hand, this structure makes between cushion block head and the cushion block seat and has the gap, forms great thermal resistance district, causes the cushion block head because of serious compression set of temperature superelevation quilt or breaking-up on it.Therefore, the composite block of this structure is promoted the use of.
The purpose of this utility model is to improve the deficiencies in the prior art, provides a kind of integral rigidity, physical strength and heat transfer property all suitable with single conventional whole cushion block made from cobalt-base alloy, and the composite heel block for billet heating furnace that manufacturing cost obviously reduces.
For achieving the above object, the utility model is taked following design: composite heel block for billet heating furnace is designed to the single rigid unitary of metal successive, on the described metal integral cushion block, following two portions regional metal has different alloy compositions respectively, the subregional composition in the top of described metal integral cushion block can be the high cobalt alloy composition, a kind of alloying constituent in croloy composition and the high-performance high-temperature nickel-base alloy composition, the subregional composition in the bottom of described metal integral cushion block is a high temperature steel, a kind of alloying constituent in iron-base superalloy and the nickel base high temperature alloy composition.To be molded in the same casting shell by specific processing requirement corresponding to the metal melt of the alloying constituent in the upper and lower two portions of described composite block zone, make described two kinds of metal melts form the metallurgical melting district in the fusion of contact interface each other, described metallurgical melting district be by and only form by described two kinds of direct metallurgical meltings of metal melt self, do not need to rely on the existence or the participation of external metallization melt.Because the welding in described metallurgical melting district promptly becomes described metal integral composite block after the described metal melt condensation in the casting shell.The alloy composition in upper and lower two portions zone of described composite block is uniformly with mutually different on macroscopic view, two interregional metallurgical melting districts then have the continually varying alloy composition, and the alloy composition in the initial value of alloy composition variation and upper and lower two zones of respectively corresponding (equaling) the described composite block of stop value.
High cobalt alloy composition described in the utility model is meant that to contain weight of cobalt percentage ratio in the alloy be 15% to 25% scope and contains the alloying constituent that weight of cobalt percentage ratio is 30% to 60% scope.Described metal melt can be all to be liquid metallic object, also can be local metallic object for liquid state or semi liquid state.
Because being the method that adopts the metal melt with two kinds of different chemical compositions to be molded in the same casting shell, makes the utility model composite block, therefore the utility model composite block not only can be made cylindrical shape, important actor shape, slide rail shape and other special shape by the utmost point easily, and can make metallurgical melting district between the zone of two kinds of different-alloy compositions in the composite block have high clarity and reach to occupy 100% of this place's cushion block cross-sectional area, promptly gapless complete metallurgical melting.Practice proves, the high clarity of fusion area and fully metallurgical melting (minimum be no less than 90%) be that to guarantee that composite block reaches the use properties of the conventional cushion block of single-material system necessary.
The composite block that the utility model provides makes the top of the single rigid unitary of metal successive have the composition of cobalt-base alloy (also can be other high performance alloys) and performance and the composition and the performance of high temperature steel (also can be general iron-based or nickel base superalloy) are arranged at the bottom, the NEW TYPE OF COMPOSITE cushion block is compared with the cobalt-base alloy cushion block of single-material manufacturing with existing, and manufacturing cost obviously reduces on-the-spot use properties with the life-span is identical; The NEW TYPE OF COMPOSITE cushion block is compared the integral rigidity that has improved this kind composite block greatly with existing machinery bonded composite block, solved the problem that existing composite block produces displacement even loose or dislocation at work, the heat transfer property of the cobalt-base alloy cushion block of the heat transfer property of the utility model composite block and single-material manufacturing simultaneously is suitable, solved existing composite block and caused the overheated and destroyed problem in cushion block top, the work-ing life of having improved cushion block because of context layer has space thermal conduction difference.Therefore, it is all suitable with the conventional cobalt-base alloy cushion block that single-material is made that the composite block that the utility model provides has integral rigidity, physical strength and a heat transfer property, the advantage that long service life and manufacturing cost obviously reduce is promoted the use of in rolling mill furnace and can be saved rare expensive greatly and obviously reduce equipment cost.
The utility model is described in further detail below in conjunction with accompanying drawing.
Accompanying drawing is a kind of composite block side diagrammatic cross-section of the present utility model, and described cushion block is to belong to a kind of in the slide rail shape composite block.
Embodiment:
As shown in drawings, the utility model composite block is the single rigid unitary 1 of metal successive, so only represents with a kind of section line on its sectional view.The casting shell does not draw in the accompanying drawing, but with arrow A → and arrow B → mark respectively A, the metal melt of two kinds of different chemical compositions of B is cast into the orientation of same casting shell, melt B adopts high temperature steel ISW5G composition, form the bottom 1b of described composite block after the condensation, melt A adopts cobalt-base alloy ISCo50 composition, form described composite block top 1a after the condensation, thin curve 2 is the residing position of approximate range and metallurgical melting district of two kinds of different-alloy composition range 1a and 1b in the described composite block of virtual representation only, thin curve 2 tops are the uniform ISCo50 cobalt-base alloy of composition districts, thin curve 2 belows are the uniform ISW5G high temperature steel of composition districts, thin curve 2 about the alloying constituent in the certain distance of both sides be continually varying with distance, the initial value and the stop value of composition variation correspond respectively to ISCo50 alloy and ISW5G high temperature steel.But it needs to be noted that this thin curve 2 is not present in the structure of composite block on the macroscopic view, because be the complete metal successive between regional 1a and the regional 1b.The lower section zone 1b of described composite block and top zone 1a are because melt B and A only are being in contact with one another at the interface directly metallurgical melting, after condensation, it is that upper and lower regional alloy composition is different and structurally be metal successive integrative-structure composite block that the metal melt of casting in the shell promptly becomes the chemical ingredients aspect.The rigging position relation of 3 described cushion blocks of expression and heating-furnace bottom support beam, described composite block is by being fixed on the support beam alternately about plover assortment mode.
Claims (6)
1. composite heel block for billet heating furnace, described composite block is the continuous integrative-structure integral body of metal that certain altitude is arranged, it is characterized in that: the alloy composition of upper and lower two portions regional metal of described composite block is inequality.
2. composite heel block for billet heating furnace according to claim 1, it is characterized in that: the alloy composition of described composite block top regional metal is a kind of alloying constituent in high cobalt alloy, croloy or the nickel base superalloy, and the alloy composition of described composite block lower section regional metal is a kind of alloying constituent in high temperature steel, iron-base superalloy or the nickel base superalloy.
3. composite heel block for billet heating furnace according to claim 1 is characterized in that: upper and lower two portions zone of described composite block is connected by the metallurgical melting district that the metal melt of tie element separately forms.
4. composite block according to claim 3 is characterized in that: described metallurgical melting district by and only directly fuse at contact interface each other and form by described two kinds of metal melts.
5, composite heel block for billet heating furnace according to claim 3 is characterized in that: the cross-sectional area of the occupied cushion block in described metallurgical melting district at this place is at least 90%.
6. composite block according to claim 4, it is characterized in that: described metallurgical melting district has the continually varying alloy composition, and the initial value that changes of described alloy composition and the stop value alloy composition that corresponds respectively to the upper and lower two portions regional metal of described composite block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211862 CN2367620Y (en) | 1999-05-25 | 1999-05-25 | Compound bearer for steel blank heating furnace of steel rooling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99211862 CN2367620Y (en) | 1999-05-25 | 1999-05-25 | Compound bearer for steel blank heating furnace of steel rooling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2367620Y true CN2367620Y (en) | 2000-03-08 |
Family
ID=34004727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99211862 Expired - Fee Related CN2367620Y (en) | 1999-05-25 | 1999-05-25 | Compound bearer for steel blank heating furnace of steel rooling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2367620Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171248A (en) * | 2015-09-06 | 2015-12-23 | 苏州市宝玛数控设备有限公司 | Pressing plate cushion block for cutting machine |
-
1999
- 1999-05-25 CN CN 99211862 patent/CN2367620Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171248A (en) * | 2015-09-06 | 2015-12-23 | 苏州市宝玛数控设备有限公司 | Pressing plate cushion block for cutting machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |