CN104190892A - Scanning method for keeping uniform temperature of electron beam cold bed furnace rectangular crystallizer - Google Patents
Scanning method for keeping uniform temperature of electron beam cold bed furnace rectangular crystallizer Download PDFInfo
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- CN104190892A CN104190892A CN201410430803.0A CN201410430803A CN104190892A CN 104190892 A CN104190892 A CN 104190892A CN 201410430803 A CN201410430803 A CN 201410430803A CN 104190892 A CN104190892 A CN 104190892A
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Abstract
The invention discloses a scanning method for keeping the uniform temperature of an electron beam cold bed furnace rectangular crystallizer. The scanning method includes the following steps that the size of the crystallizer is confirmed, the crystallizer is divided into five equal parts in the length direction, and equal dividing marks convenient to observe are arranged on the outer side of the crystallizer, the crystallizer is installed on a dummy ingot system to be leveled and well fixed, after normal work of a water cooling system, a dummy ingot system and a vacuum system is confirmed, an electron beam responsible for scanning the crystallizer is arranged for scanning a pattern, virtual thermal imaging is conducted on the set patterns, thermal uniformity of the scanned pattern is confirmed, and smelting can be conducted after vacuum reaches a preset value. The scanning method is simple in design, convenient to operate, good in using effect, capable of effectively overcoming the defects such as layer folding, cold isolating, scabbing, waisting and hole shrinking on the surface of a rectangular slab, and capable of effectively improving the quality of the surface of the slab, reducing the face milling amount and improving the one-time yield.
Description
Technical field
The present invention relates to one and maintained the uniform scan method of electron-beam cold bed furnace rectangular crystallizer temperature, belonged to field of engineering technology.
Background technology
Titanium alloy is widely used because it has the advantages such as density is low, ratio is strong high, high temperature resistant, corrosion-resistant, and mechanical performance and processing performance are good.But often occur that crystal grain is excessive in the titanium alloy ingot of employing conventional method melting, component segregation, hole, crackle, high density is mingled with and is mingled with etc. not enough with low-density, and the appearance of these defects can make follow-up parts in use occur fatigue, for improving its service life, one of the main divisions of the male role in traditional opera produces the noble and unsullied titanium alloy material of high-quality.
Electron-beam cold bed furnace melting technique is that electron beam is combined with cold bed, carries out the metallurgical technology of melting under high vacuum condition.Differ from vacuum consumable arc-melting technology and be it and there is a cold bed that can carry out refining the fusing of raw material and ingot casting casting separately.Therefore, can one or more electron gun be set according to different technological requirements, cold bed also can have different structural designs to ensure the realization of its refining purification function.For this reason, electron-beam cold bed furnace melting technique can better solve the problems such as the excessive and high/low density of the crystal grain occurring in traditional fusion process is mingled with, thereby must be in extensive use in Aero-Space require to produce noble and unsullied titanium alloy material.
The thermal source of electron beam cold hearth melting stove is to be provided by electron gun, by the operation principle of electron gun and limiting of electron transport property, the scanning area of electron beam is less, ensure carrying out smoothly of melting, just must ensure the temperature of melting cold bed and refining cold bed so that the liquation of molten state flow in the lip of casting from melting cold bed is flowed through refining cold bed, and cast in crystallizer.Because both ends and the both sides internal water flow of rectangular crystallizer are different, and both ends and middle part and titanium liquid contact area differ in casting cycle, in crystallizer, titanium liquid easily produces the larger temperature difference, if it is unreasonable to be responsible for the electron scanning technique of scanning crystallizer, just be easy to cause the liquid level of the casting side (contacting with casting lip) of crystallizer to exceed the liquid level of whole crystallizer, easily there is breach (side is split) in this position, the defects such as closing waist, easily there is fold in the opposite side in casting, the defects such as cold shut, there is temperature transition district in the middle part of crystallizer and end, scabbing easily appears in this region, style of opening is torn etc. not enough, the appearance of these defects can reduce the surface quality of ingot casting, increase milling face amount, greatly reduce the once lumber-preserving rate of ingot casting, and bring difficulty for follow-up processing.
By the retrieval to prior art document, maintain the uniform scan method research of electron-beam cold bed furnace rectangular crystallizer temperature about one, not yet find relevant report.
Summary of the invention
Technical problem to be solved by this invention is the deficiency for above-mentioned appearance, provide one to maintain the uniform scan method of electron-beam cold bed furnace rectangular crystallizer temperature, its scanning process is simple, easy to operate, result of use is good, can effectively solve problem and deficiency that casting rectangle ingot casting occurs.
In order to achieve the above object, the technical solution used in the present invention is: the size of confirming crystallizer, at length direction by crystallizer five deciles (as shown in Figure 1), and perform in crystallizer outside the decile mark of being convenient to observation, crystallizer is installed as in dummy ingot system, smoothing, fix, the water-cooling system of confirming crystallizer is working properly, confirm that dummy ingot system works is normal, confirm after the normal work of vacuum system, normally find time, the electron beam scanning figure of being responsible for scanning crystallizer is set, the figure of setting is carried out to virtual thermal imaging, confirm the thermal uniformity of scanning patter, after setting completes, when vacuum reaches 6.0 × 10
-3after hPa, figure is preloaded, electron gun filament is carried out to preheating, after preheating completes, divergent bundle starts crystallizer presumptive area to scan, and by temperature acquisition system, the liquid flowing into after crystallizer is carried out to thermometric, each point for measuring temperature temperature deviation≤5 DEG C, in the fusion process of described electron beam cold hearth melting stove, low vacuum is in 6.0 × 10
-3hPa, speed of melting is 900～1200kg/h, the power of being responsible for the electron gun of scanning crystallizer is 320～430kW, described scan method can make the once lumber-preserving rate of titanium ingot reach more than 98%.
The present invention has the following advantages:
1, arrange simple, easy to operate;
2, casting rate is high, reaches as high as 1200kg/h;
3, result of use is good, can effectively solve in casting cycle and to occur the defect that occurs on heat is inhomogeneous and cause ingot casting;
4, reduce the difficulty of casting rectangle ingot casting;
5, improve lumber recovery, can obtain obvious economic benefit.
In sum, scanning invention of the present invention is simple, easy to operate, result of use is good, can ensure that high casting rate compacted under is good, can effectively solve in casting cycle due to the inhomogeneous defect generating and the deficiency of being heated.
Below by drawings and Examples, technical scheme of the present invention is further described.
Brief description of the drawings
Fig. 1 is scanning process schematic diagram of the present invention.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, the uniform scan method of electron-beam cold bed furnace rectangular crystallizer temperature that maintains of the present invention, comprise the following steps: the size of confirming crystallizer, at length direction by crystallizer five deciles (as shown in drawings), and perform in crystallizer outside the decile mark of being convenient to observation, crystallizer is installed as in dummy ingot system, smoothing, fix, the water-cooling system of confirming crystallizer is working properly, confirm that dummy ingot system works is normal, confirm after the normal work of vacuum system, normally find time, the electron beam scanning figure (concrete scanning sequency is in table 1) of being responsible for scanning crystallizer is set, the figure of setting is carried out to virtual thermal imaging, confirm the thermal uniformity of scanning patter, after setting completes, when vacuum reaches 6.0 × 10
-3after hPa, figure is preloaded, electron gun filament is carried out to preheating, after preheating completes, divergent bundle starts crystallizer presumptive area to scan, and by temperature acquisition system, the liquid flowing into after crystallizer is carried out to thermometric, each point for measuring temperature temperature deviation≤5 DEG C, in the fusion process of described electron beam cold hearth melting stove, low vacuum is in 6.0 × 10
-3hPa, speed of melting is 900kg/h, the power of being responsible for the electron gun of scanning crystallizer is 430kW, described scan method can make the once lumber-preserving rate of titanium ingot reach more than 98%.
Table 1 crystallizer electron beam scanning order and Energy distribution
Embodiment 2
As shown in Figure 1, the uniform scan method of electron-beam cold bed furnace rectangular crystallizer temperature that maintains of the present invention, comprise the following steps: the size of confirming crystallizer, at length direction by crystallizer five deciles (as shown in drawings), and perform in crystallizer outside the decile mark of being convenient to observation, crystallizer is installed as in dummy ingot system, smoothing, fix, the water-cooling system of confirming crystallizer is working properly, confirm that dummy ingot system works is normal, confirm after the normal work of vacuum system, normally find time, the electron beam scanning figure (concrete scanning sequency is in table 2) of being responsible for scanning crystallizer is set, the figure of setting is carried out to virtual thermal imaging, confirm the thermal uniformity of scanning patter, after setting completes, when vacuum reaches 6.0 × 10
-3after hPa, figure is preloaded, electron gun filament is carried out to preheating, after preheating completes, divergent bundle starts crystallizer presumptive area to scan, and by temperature acquisition system, the liquid flowing into after crystallizer is carried out to thermometric, each point for measuring temperature temperature deviation≤5 DEG C, in the fusion process of described electron beam cold hearth melting stove, low vacuum is in 6.0 × 10
-3hPa, speed of melting is 1200kg/h, the power of being responsible for the electron gun of scanning crystallizer is 320kW, described scan method can make the once lumber-preserving rate of titanium ingot reach more than 98%.
Table 2 crystallizer electron beam scanning order and Energy distribution
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every according to the technology of the present invention essence to above embodiment simply revise, the variation of change and equivalent structure, all still belong in the protection domain of technical solution of the present invention.
Claims (1)
1. one kind maintains the uniform scan method of electron-beam cold bed furnace rectangular crystallizer temperature, it is characterized in that, comprise the following steps: the size of confirming crystallizer, at length direction by crystallizer five deciles, and perform in crystallizer outside the decile mark of being convenient to observation, crystallizer is installed as in dummy ingot system, smoothing, fix, confirm water-cooling system, dummy ingot system, after the normal work of vacuum system, the electron beam scanning figure of being responsible for scanning crystallizer is set, the figure of setting is carried out to virtual thermal imaging, confirm the thermal uniformity of scanning patter, after setting completes, when vacuum reaches 6.0 × 10
-3after hPa, figure is preloaded, electron gun filament is carried out to preheating, after preheating completes, divergent bundle starts crystallizer presumptive area to scan, and by temperature acquisition system, the liquid flowing into after crystallizer is carried out to thermometric, each point for measuring temperature temperature deviation≤5 DEG C, in the fusion process of described electron beam cold hearth melting stove, low vacuum is in 6.0 × 10
-3hPa, speed of melting is 900～1200kg/h, the power of being responsible for the electron gun of scanning crystallizer is 320～430kW.
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| CN201410430803.0A CN104190892B (en) | 2014-08-28 | 2014-08-28 | A kind of scan method maintaining electron-beam cold bed furnace rectangular crystallizer homogeneous temperature |
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| CN104190892B CN104190892B (en) | 2016-03-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739844A (en) * | 2017-10-18 | 2018-02-27 | 云南钛业股份有限公司 | The setting method of the rifle electron beam scanning style of ingot casting end face 2 of hollow ingot |
| CN107746971A (en) * | 2017-10-18 | 2018-03-02 | 云南钛业股份有限公司 | It is a kind of with electron-beam cold bed furnace cast titanium or the method for titanium alloy hollow ingot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3343828A (en) * | 1962-03-30 | 1967-09-26 | Air Reduction | High vacuum furnace |
| US5273102A (en) * | 1991-06-05 | 1993-12-28 | General Electric Company | Method and apparatus for casting an electron beam melted metallic material in ingot form |
| CN1472613A (en) * | 2003-05-16 | 2004-02-04 | 上海交通大学 | Electron beam scanning heating temperature closed loop control method |
| CN103017559A (en) * | 2012-11-16 | 2013-04-03 | 云南钛业股份有限公司 | Method of electron beam scanning patterns during preheating process of EB (Electron Beam) furnace |
-
2014
- 2014-08-28 CN CN201410430803.0A patent/CN104190892B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3343828A (en) * | 1962-03-30 | 1967-09-26 | Air Reduction | High vacuum furnace |
| US5273102A (en) * | 1991-06-05 | 1993-12-28 | General Electric Company | Method and apparatus for casting an electron beam melted metallic material in ingot form |
| CN1472613A (en) * | 2003-05-16 | 2004-02-04 | 上海交通大学 | Electron beam scanning heating temperature closed loop control method |
| CN103017559A (en) * | 2012-11-16 | 2013-04-03 | 云南钛业股份有限公司 | Method of electron beam scanning patterns during preheating process of EB (Electron Beam) furnace |
Non-Patent Citations (2)
| Title |
|---|
| 陈云霞等: "电子束快速成形温度场模拟", 《焊接学报》 * |
| 陈战乾等: "2400KW电子束冷床炉熔炼纯钛生产实践及工艺控制", 《金属世界》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739844A (en) * | 2017-10-18 | 2018-02-27 | 云南钛业股份有限公司 | The setting method of the rifle electron beam scanning style of ingot casting end face 2 of hollow ingot |
| CN107746971A (en) * | 2017-10-18 | 2018-03-02 | 云南钛业股份有限公司 | It is a kind of with electron-beam cold bed furnace cast titanium or the method for titanium alloy hollow ingot |
| CN107739844B (en) * | 2017-10-18 | 2019-05-03 | 云南钛业股份有限公司 | The setting method of the 2 rifle electronics beam scanning style of ingot casting end face of hollow ingot |
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| CN104190892B (en) | 2016-03-30 |
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