CN201596752U - Novel centrifugal casting furnace tube model - Google Patents
Novel centrifugal casting furnace tube model Download PDFInfo
- Publication number
- CN201596752U CN201596752U CN2009202115076U CN200920211507U CN201596752U CN 201596752 U CN201596752 U CN 201596752U CN 2009202115076 U CN2009202115076 U CN 2009202115076U CN 200920211507 U CN200920211507 U CN 200920211507U CN 201596752 U CN201596752 U CN 201596752U
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- centrifugal casting
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Abstract
The utility model relates to a centrifugal casting furnace tube model, which belongs to the centrifugal casting field of metallurgy. At present, the furnace tube of an industry furnace is principally casted centrifugally, the model for casting is principally water-cooling type metal model, and the material for preparing the model is generally high-alloy steel. During the centrifugal casting production process, the temperature of the model is changed in period obviously, such that the model is subjected to thermal impact of the alternating temperature. The model is deformed by the action of the thermal stress, and the inner wall of the model is damaged (e.g. cracking)due to thermal fatigue, which is first reason to cause the metal model to discard as useless. The utility model provides a novel centrifugal casting furnace tube model which is fomed by enchasing carbon crystal on the inner side of an external model. carbon crystal material has excellent performance and is used as novel model material in the centrifugal casting field of metallurgy so as to improve thermal fatigue situation of the outer portion of the metal model to improve the furnace tube performance and prolong service lifetime of the model and improve productivity greatly, so as to save production costs.
Description
Technical field
The utility model relates to a kind of novel centrifugal foundry furnace pipe die and belongs to metallurgical centrifugal casting field.
Background technology
At present the boiler tube of industrial furnace mainly adopts centrifugal casting, and its centrifugal casting is mainly the metal pattern of water-cooling type with mould, and the material of mould generally adopts high-alloy steel etc.In the centrifugal casting production process, obvious periodic change can take place in the temperature of mould, makes mould be subjected to the thermal shock of alternating temperature-changing.Deformation can take place in mould under the thermal stress effect, when deformation quantity reached certain numerical value, the dimensional accuracy of mould just can not meet the demands.And the thermal shock maximum that the inwall of long mould of working time just is subjected to, Here it is, and mould produces the reason that ftractures under heat fatigue.Only can pour into a mould the boiler tube about 300 service life of a common type tube, well below desired life, therefore hindered further developing of productivity ratio.
Summary of the invention
The purpose of this utility model is to propose a kind ofly to overcome above-mentioned defective, the centrifugal casting mould of increase the service life, improve the boiler tube performance, boosting productivity.A kind of novel centrifugal foundry furnace pipe die mainly is made up of the outer metal pattern of water-cooling type, it is characterized in that: described outer metal pattern inboard is inlaid with interior carbon crystal formation tube.This centrifugal casting mould adopts the carbon crystalline substance to place in the outer metal pattern as the liner of mould, utilize the brilliant material of carbon to have that thermal conductivity factor is big, thermal capacity is big, linear expansion coefficient is little, the high good physical property of fusing point, the compression strength bigger with ability has good mechanical performance such as heat endurance under the good high-temperature.Use as new mold materials in metallurgical centrifugal casting field, can impel the heat fatigue situation of external metallization mould to be eased, thereby prolong the service life of mould.Thereby can boost productivity, save production cost.Utilize the brilliant good chilling performance of carbon simultaneously, reach and improve the boiler tube performance.
For achieving the above object, the utility model proposes a kind of new centrifugal casting furnace pipe die.According to practical working situation, the brilliant mould of carbon is processed by the carbon crystalline substance of tubing, roundwood, square bar, sheet material, the brilliant mould of long carbon can adopt screw thread, ladder, pin-and-hole, taper modes be formed by connecting by several sections moulds, and carries out hot edge, mechanical fixation, the multiple mode of stickup in the metal pattern outside or the mode that is used in combination is installed.Therefore the utility model proposes the making and the installation method of the brilliant mould of carbon, this new mould can normally be moved.Thereby reached the purpose of improving the boiler tube serviceability, improving service life, reduce production costs.
Description of drawings
Fig. 1 is novel centrifugal casting furnace pipe die schematic diagram.
The specific embodiment
Referring to Fig. 1, outer metal pattern 60 is provided with roller groove 70, can adopt the brilliant mould of carbon to be threaded 10 between the interior carbon crystal formation tube 20, spliced carbon crystal formation tube 20 adopts hot insert to go in the outer metal pattern 60, and this pipe die is provided with circumferential on-slip key 50, end cap 40, axial restraint pin-and-hole 30.A kind of novel centrifugal foundry furnace pipe die is characterized in that described carbon crystal formation tube can be carbon crystalline substance and goods thereof, can be tubing, roundwood, square bar, sheet material.The brilliant mould of this carbon crystal formation tube carbon can be spliced in segmentation, and its joint style can adopt and be threaded, ladder, pin-and-hole, taper connect.The mounting means of brilliant mould of this carbon and shell mould can adopt hot edge, mechanical fixation, the multiple mode of stickup or is used in combination.
The making of the brilliant mould of carbon
Press the characteristic of electrode carbon crystalline substance, mould can adopt mach mode to make according to following method.
The thickness of the brilliant mould of carbon can be according to decisions such as the size of cast tube, access times.Thickness: H=20+0.5h rule of thumb, wherein h is the wall thickness of cast tube.External diameter is respectively d1 in the cast tube, d2, and then the interior external diameter of the brilliant mould of carbon is respectively d3, d4, the interior external diameter of outer metal pattern is d5, d6, the pass is: d3=d2, d4=d3+2H, d5=d4.
Assembling
Because the maximum length of carbon current crystalline substance is 2.4 meters, the carbon crystalline substance of bigger length needs customization.The mode of splicing in the several sections moulds can be adopted for the brilliant mould of long carbon, requirements such as linearity, axiality must be guaranteed when noting splicing.The brilliant mould of spliced prefabricated carbon adopts hot insert to go in the external mold.Whole mould is under the operating mode of operate as normal, and brilliant mould of carbon and metal pattern are interlocked tightly, can not produce loosening state.
Because the brilliant material of carbon has high heat storage coefficient, reduce the radiating rate in the boiler tube casting process, thereby good cushioning effect has been played in thermal shock, reduced the thermal fatigue strength of metal pattern, delay the generation that the cracking etc. of metal pattern damages, reach and prolong metal pattern service life. Simultaneously, because the chilling effect can improve the crystalline texture of boiler tube, improve the serviceability of boiler tube. The centrifugal casting of this boiler tube has the characteristics such as cost is low, function admirable with the brilliant mould of carbon, and really reached and enhanced productivity, a kind of invention that reduces production costs, it has promotional value.
Claims (4)
1. a novel centrifugal foundry furnace pipe die mainly is made up of the outer metal pattern of water-cooling type, it is characterized in that: described outer metal pattern inboard is inlaid with interior carbon crystal formation tube.
2. a kind of novel centrifugal foundry furnace pipe die according to claim 1 is characterized in that described carbon crystal formation tube can be carbon crystalline substance and goods thereof, can be tubing, roundwood, square bar, sheet material.
3. a kind of novel centrifugal foundry furnace pipe die according to claim 1 is characterized in that the brilliant mould of described carbon crystal formation tube carbon can be spliced in segmentation, and its joint style can adopt and be threaded, ladder, pin-and-hole, taper connect.
4. a kind of novel centrifugal foundry furnace pipe die according to claim 1 is characterized in that the mounting means of brilliant mould of carbon and shell mould, can adopt hot edge, mechanical fixation, the multiple mode of stickup or is used in combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202115076U CN201596752U (en) | 2009-10-29 | 2009-10-29 | Novel centrifugal casting furnace tube model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202115076U CN201596752U (en) | 2009-10-29 | 2009-10-29 | Novel centrifugal casting furnace tube model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201596752U true CN201596752U (en) | 2010-10-06 |
Family
ID=42807800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202115076U Expired - Lifetime CN201596752U (en) | 2009-10-29 | 2009-10-29 | Novel centrifugal casting furnace tube model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201596752U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598411A (en) * | 2016-01-22 | 2016-05-25 | 中钢集团邢台机械轧辊有限公司 | Cold type design method used for high-seed centrifugal casting |
| CN110421133A (en) * | 2019-07-25 | 2019-11-08 | 北京工业大学 | A kind of preparation method of centrifugal casting Ethylene Cracking Furnace Tubes |
-
2009
- 2009-10-29 CN CN2009202115076U patent/CN201596752U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598411A (en) * | 2016-01-22 | 2016-05-25 | 中钢集团邢台机械轧辊有限公司 | Cold type design method used for high-seed centrifugal casting |
| CN110421133A (en) * | 2019-07-25 | 2019-11-08 | 北京工业大学 | A kind of preparation method of centrifugal casting Ethylene Cracking Furnace Tubes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 200335 Shanghai city Changning District road 268 Lane 3, facing the new Patentee after: Shanghai Zhuoran Engineering Technology Co., Ltd. Patentee after: Zuoran (Jingjiang) Equipment Manufacture Co., Ltd. Address before: 200001 Shanghai City, Huangpu District Guangdong Road No. 689 room 1603 Patentee before: Shanghai Zhuoran Engineering Technology Co., Ltd. Patentee before: Zuoran (Jingjiang) Equipment Manufacture Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200335 Shanghai city Changning District road 268 Lane 3, facing the new Co-patentee after: Zuoran (Jingjiang) Equipment Manufacture Co., Ltd. Patentee after: Shanghai zhuoran engineering Limited by Share Ltd Address before: 200335 Shanghai city Changning District road 268 Lane 3, facing the new Co-patentee before: Zuoran (Jingjiang) Equipment Manufacture Co., Ltd. Patentee before: Shanghai Zhuoran Engineering Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |
|
| CX01 | Expiry of patent term |