CN103386546A - Quality control method for hydraulic body part electron beam welding joint - Google Patents
Quality control method for hydraulic body part electron beam welding joint Download PDFInfo
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- CN103386546A CN103386546A CN2013103036763A CN201310303676A CN103386546A CN 103386546 A CN103386546 A CN 103386546A CN 2013103036763 A CN2013103036763 A CN 2013103036763A CN 201310303676 A CN201310303676 A CN 201310303676A CN 103386546 A CN103386546 A CN 103386546A
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Abstract
The invention provides a quality control method for a hydraulic body part electron beam welding joint. The quality control method for the hydraulic body part electron beam welding joint comprises the following steps of: (a) before a stainless steel flange plate is welded with an electroforming nickel body part, taking the stainless steel flange plate as a lock bottom; (b) processing one circle of process tank on the joint area of the electroforming nickel body part, carrying out spot welding and embedding banded crack-arresting alloy into the process tank, and continuously arranging the banded crack-arresting alloy; and (c) when the stainless steel flange plate and the electron beam of the electroforming nickel body part are in welding and centring, enabling the electron beam to deviate to one side of the electroforming nickel body part for 0.4-0.5mm. According to the quality control method for the hydraulic body part electron beam welding joint, which is disclosed by the invention, the welding line ingredient is regulated, an optimized joint structure is determined, and the beam deflection amount is regulated, so that the defect of the incomplete fusion of a crack and a welding line root can be avoided, the welding line forming quality is guaranteed, and the joint quality reliability is improved.
Description
Technical field
The present invention relates to electron beam welding technology, be specifically related to a kind of hydraulic pressure body section electro-beam welding joint method of quality control.
Background technology
Thrust chamber hydraulic pressure body section is the critical component of engine, and it is welded and form with electroformed nickel body section 2 by steel flange dish 1.Steel flange dish 1 is the 1Cr18Ni9Ti material.The inwall of electroformed nickel body section 2 adopts good heat conductivity, and the zirconium copper that calorific intensity is high, outer wall adopt the upper certain thickness pure nickel of method casting of electroforming, also are referred to as electroforming body section.The steel flange dish adopts electro-beam welding method to be connected with electroformed nickel body section, bear the gas-flow of HTHP high speed and the vibratory impulse that produces thereof, also to bear low temperature and the channel pressure of high speed liquid hydrogen, therefore, the welding point desired strength is high, fine and close, being forbidden has a bit hydrogen seepage, need meet electron beam welding I level weld seam standard.
The fusing point of electroformed nickel, thermal conductivity all will be higher than 1Cr18Ni9Ti, and wherein thermal conductivity is more than 3 times of 1Cr18Ni9Ti.The material that fusing point is higher, thermal conductivity is stronger, melt the needed heat of its equal volume material and want high, because physical properties both has bigger difference, the electron beam welding energy is in the situation that electroformed nickel and 1Cr18Ni9Ti both sides mean allocation, the fusing amount of electroformed nickel will be lacked, and has caused the asymmetric of weld seam.Easily produce and be partially welded defect, cause the incomplete fusion of the root of weld.
Electroformed nickel is different from the pure nickel of smelting rolling, its tissue looseness and more crisp, solderability is poorer than the pure nickel of rolling, be prone to the low melting point phases such as NiO, be gathered in grain boundaries and reduced intercrystalline adhesion, under the effect of welding stress, very likely crack, must add the crack arrest alloy in weld seam, adjust the composition of weld seam, prevent the generation of crackle.Need test to determine crack arrest alloying component, interpolation form and the addition etc. that add.Simultaneously, reduce welding stress and welding deformation by close fit and frock heat radiation etc.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic pressure body section electro-beam welding joint method of quality control, it can carry out quality control to the steel flange dish and the welding of electroformed nickel body section that belong to hydraulic pressure body section, guarantees that hydraulic pressure body section welding point meets the requirement of electron beam welding I level weld seam.
Realize the technical scheme of the object of the invention: a kind of hydraulic pressure body section electro-beam welding joint method of quality control, the method adopts electro-beam welding method soldering stainless steel ring flange and electroformed nickel body section, and the method comprises the steps:
(a) before steel flange dish and the welding of electroformed nickel body section, take the steel flange dish as the lock end, the steel flange dish is that the 1Cr18Ni9Ti material is made;
(b) at the seaming zone processing one circle technology groove of electroformed nickel body section, banded crack arrest alloy spot welding is embedded in technology groove; The continuous blow-down of banded crack arrest alloy, can not interval or overlapping, to guarantee banded crack arrest alloy, is close on the inwall of technology groove;
Described banded crack arrest alloy composition is in Table 1:
The banded crack arrest alloy composition of table 1, mass percent %
(c) when steel flange dish and electroformed nickel body section electron beam welding centering, make the electron beam deflection electroformed nickel body one side 0.4mm～0.5mm of section, thereby increase the Energy distribution of electroformed nickel body section one side, can melt as much as possible.
A kind of hydraulic pressure body as above section electro-beam welding joint method of quality control, its described banded crack arrest alloy width at 3～4mm, thickness at 0.1～0.2mm.
A kind of hydraulic pressure body as above section electro-beam welding joint method of quality control, need polishing to light before its described banded crack arrest alloy cutting, remove surface scale.
Effect of the present invention is: hydraulic pressure body of the present invention section electro-beam welding joint method of quality control, by adjusting composition of weld line, determine the joint design of optimizing, adjusting bundle deviator etc., can Crack prevention, the defects such as incomplete fusion of the root of weld, guarantee quality of weld seam molding, improve the joint quality reliability.
Description of drawings
Fig. 1 is steel flange dish and electroformed nickel body section welding schematic diagram;
Fig. 2 is the I part partial enlarged drawing of Fig. 1;
Fig. 3 is steel flange dish and electroformed nickel body section weld seam pattern.
In figure: 1. steel flange dish; 2. electroformed nickel body section; 3. technology groove.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, a kind of hydraulic pressure body of the present invention section electro-beam welding joint method of quality control is further described.
A kind of hydraulic pressure body of the present invention section electro-beam welding joint method of quality control, it adopts electro-beam welding method soldering stainless steel ring flange 1 and electroformed nickel body section 2, and concrete steps are as follows:
(a) as shown in Figure 1, before steel flange dish 1 welded with electroformed nickel body section 2, take steel flange dish 1 as the lock end, steel flange dish 1 was made for the 1Cr18Ni9Ti material;
(b) as shown in Figure 2, the seaming zone processing one circle technology groove 3 in electroformed nickel body section 2, embed banded crack arrest alloy spot welding in technology groove 3; The continuous blow-down of banded crack arrest alloy, can not interval or overlapping, to guarantee banded crack arrest alloy, is close on the inwall of technology groove 3;
Described banded crack arrest alloy (4) width is at 3～4mm(for example: 3mm, 3.5mm or 4mm), thickness at 0.1～0.2mm(for example: 0.1mm, 0.14mm or 0.2mm);
Described banded crack arrest alloy composition is in Table 1:
The banded crack arrest alloy composition of table 1, mass percent %
(c) as shown in Figure 3, when steel flange dish 1 and electroformed nickel body section 2 electron beam welding centering, make the electron beam deflection electroformed nickel body 2 one side 0.4mm～0.5mm of section, thereby increase the Energy distribution of electroformed nickel body section 2 one sides, can melt as much as possible.
Need polishing to light before above-mentioned banded crack arrest alloy cutting, remove surface scale.
In the present invention with 1Cr18Ni9Ti as the lock end, during the welding of electron beam penetration, the 1Cr18Ni9Ti that is equivalent to uniform thickness docks with electroformed nickel, add 1Cr18Ni9Ti in weld seam, namely in the weld seam chemical composition, the content of 1Cr18Ni9Ti is more, the content of electroformed nickel is less, help to improve chromium nickel equivalent ratio, than electroformed nickel, do the lock end, the heat resistanceheat resistant crack performance of joint will be got well.
The present invention, for improving the weld seam crack resistance, adopts banded crack arrest alloy, namely realizes to weld seam adding some alterants,, as Mn, Cr etc.,, with crystal grain thinning, weakens the illeffects of O, S, and the generation that prevents pore is also had certain effect.In this band shape crack arrest alloy, because contain the Mn of higher composition, the Ni element, can regulate ω (Ni) content in electroformed nickel and 1Cr18Ni9Ti weld seam, the illeffects that suppresses S, Mn has desulfidation, also can improve the distribution of sulfide simultaneously, has avoided the generation of bead crack.
Banded crack arrest alloy need be polished to light, removes surface scale, and the existence of this oxide skin may form NiO with electroformed nickel in welding process, affect joint quality.
Be chosen in electroformed nickel body section 2 one side flutings, when the reason that banded crack arrest alloy is inlaid into electroformed nickel body section 2 one sides of connector area is stainless steel and electroformed nickel different-metal material welding, electron beam centering deflection electroformed nickel one side, can guarantee that banded crack arrest alloy melts fully, effectively brings into play its crack arrest effect.
During electron beam welding, the reason that weld seam produces deflection may be: the difference by electroformed nickel and 1Cr18Ni9Ti physical property causes, the own factor of material that affect the material fusing mainly contains: the metal composition structure (thermal capacity of joint) of the fusing point of material, the thermal conductivity of material, joint.The fusing point of electroformed nickel, thermal conductivity all will be higher than 1Cr18Ni9Ti, and wherein thermal conductivity is more than 3 times of 1Cr18Ni9Ti.The electron beam welding energy is in the situation that electroformed nickel and 1Cr18Ni9Ti both sides mean allocation, and the fusing amount of electroformed nickel will be lacked, and has caused the asymmetric of weld seam.The present invention, in order to ensure the quality of welding, has taked following technological measure: at first, during welding centering, make the conscious deflection electroformed nickel one side 0.4～0.5mm of line, increase the Energy distribution of electroformed nickel one side, can melt as much as possible.
Claims (3)
1. hydraulic pressure body section electro-beam welding joint method of quality control, the method adopts electro-beam welding method soldering stainless steel ring flange (1) and electroformed nickel body section (2), it is characterized in that, and the method comprises the steps:
(a) before steel flange dish (1) welds with electroformed nickel body section (2), take steel flange dish (1) as the lock end, steel flange dish (1) is made for the 1Cr18Ni9Ti material;
(b) at the seaming zone processing one circle technology groove (3) of electroformed nickel body section (2), banded crack arrest alloy spot welding is embedded in technology groove (3); The continuous blow-down of banded crack arrest alloy, can not interval or overlapping, to guarantee banded crack arrest alloy, is close on the inwall of technology groove (3);
Described banded crack arrest alloy composition is in Table 1:
The banded crack arrest alloy composition of table 1, mass percent %
(c) when steel flange dish (1) and electroformed nickel body section (2) electron beam welding centering, make electron beam deflection electroformed nickel body (2) the one side 0.4mm～0.5mm of section, thereby increase the Energy distribution of electroformed nickel body section (2) one sides, can melt as much as possible.
2. a kind of hydraulic pressure body according to claim 1 section electro-beam welding joint method of quality control, is characterized in that, described banded crack arrest alloy (4) width at 3～4mm, thickness at 0.1～0.2mm.
3. a kind of hydraulic pressure body according to claim 1 and 2 section electro-beam welding joint method of quality control, is characterized in that, needs polishing to light before the cutting of described banded crack arrest alloy, removes surface scale.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439675A (en) * | 2014-10-28 | 2015-03-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for controlling electron beam weld quenching brittle crack of hydraulic actuator cylinder |
| CN107598402A (en) * | 2017-09-19 | 2018-01-19 | 中国核动力研究设计院 | CRDM dissimilar metal heavy wall butt weld one-shot forming welding procedure |
| CN112192084A (en) * | 2020-09-18 | 2021-01-08 | 杭州汽轮动力集团有限公司 | Non-penetrating electron beam welding seam allowance structure and welding method |
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| CN101774070A (en) * | 2009-12-30 | 2010-07-14 | 山东大学 | Micro-plasma arc welding for heat-resistant casting alloy and austenitic stainless steel |
| CN102000915A (en) * | 2009-08-31 | 2011-04-06 | 通用电气公司 | Combustion cap effusion plate laser weld repair |
| CN102441732A (en) * | 2010-10-12 | 2012-05-09 | 北京智创联合科技有限公司 | Diffusion welding method and weldment |
| US20120315199A1 (en) * | 2011-06-08 | 2012-12-13 | Microreactor Solutions Llc | System and method for a microreactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102000915A (en) * | 2009-08-31 | 2011-04-06 | 通用电气公司 | Combustion cap effusion plate laser weld repair |
| CN101774070A (en) * | 2009-12-30 | 2010-07-14 | 山东大学 | Micro-plasma arc welding for heat-resistant casting alloy and austenitic stainless steel |
| CN102441732A (en) * | 2010-10-12 | 2012-05-09 | 北京智创联合科技有限公司 | Diffusion welding method and weldment |
| US20120315199A1 (en) * | 2011-06-08 | 2012-12-13 | Microreactor Solutions Llc | System and method for a microreactor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439675A (en) * | 2014-10-28 | 2015-03-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for controlling electron beam weld quenching brittle crack of hydraulic actuator cylinder |
| CN104439675B (en) * | 2014-10-28 | 2016-07-06 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of hydraulic actuator electron beam weld that controls hardens the method for brittle crack |
| CN107598402A (en) * | 2017-09-19 | 2018-01-19 | 中国核动力研究设计院 | CRDM dissimilar metal heavy wall butt weld one-shot forming welding procedure |
| CN112192084A (en) * | 2020-09-18 | 2021-01-08 | 杭州汽轮动力集团有限公司 | Non-penetrating electron beam welding seam allowance structure and welding method |
| CN112192084B (en) * | 2020-09-18 | 2022-04-12 | 杭州汽轮动力集团有限公司 | Non-penetrating electron beam welding seam allowance structure and welding method |
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Inventor after: Zhang Yikun Inventor after: Xie Meirong Inventor after: Cheng Zhifu Inventor after: Gao Fenglin Inventor after: Ma Sukun Inventor after: Wang Wei Inventor before: Zhang Yikun Inventor before: Xie Meirong Inventor before: Cheng Zhifu Inventor before: Ma Sukun Inventor before: Wang Wei |
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Address after: 100076 No. 2 East guard Road, Fengtai District, Beijing, Nanyuan Patentee after: CAPITAL AEROSPACE MACHINERY Co.,Ltd. Patentee after: CHINA ACADEMY OF LAUNCH VEHICLE TECHNOLOGY Address before: 100076 No. 2 East guard Road, Fengtai District, Beijing, Nanyuan Patentee before: CAPITAL AEROSPACE MACHINERY Co. Patentee before: CHINA ACADEMY OF LAUNCH VEHICLE TECHNOLOGY |
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