CN204735860U - Y type groove welds two end face slot mouth test panel of cracking test method to one side - Google Patents
Y type groove welds two end face slot mouth test panel of cracking test method to one side Download PDFInfo
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- CN204735860U CN204735860U CN201520309149.8U CN201520309149U CN204735860U CN 204735860 U CN204735860 U CN 204735860U CN 201520309149 U CN201520309149 U CN 201520309149U CN 204735860 U CN204735860 U CN 204735860U
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Abstract
The utility model discloses a Y type groove welds two end face slot mouth test panel of cracking test method to one side belongs to the welding technique field, including the experimental test panel that uses of national standard GB4675.1 -84 regulation, form the welding seam between two test panel in this national standard regulation, this welding seam divide into the contained welding seam and middle pilot seam at both ends, and the two test panel terminal surfaces of restricting welding seam department are the wedge face that comprises upper and lower inclined plane, and two test panel terminal surfaces of pilot seam department are a wedge face and a whole inclined plane respectively, and this wedge face and whole inclined plane constitute the oblique Y type groove of pilot seam, modified test panel with test panel difference in the national standard lies in: the upper and lower inclined plane of the shape face of carving of pilot seam to and whole inclined plane homogeneous phase sinks to being a notch to the adjacent two wedge face parallels of restricting the welding seam. The utility model discloses can reach the oblique Y type groove of swift, accurate control welding cracking test method pilot seam root groove clearance purpose, simultaneously, can guarantee to restrain the root of weld complete penetration, guarantee whole process of the test and can go on smoothly.
Description
Technical field
The utility model belongs to welding technology field, when being mainly used in adopting oblique Y type groove welding crack test method to evaluate steel and welding material cold crack and reheat cracking susceptibility, and guarantee test root gap of weld and contained weld seam through welding.
Background technology
Oblique Y type groove welding crack test is a kind of test method for evaluating steel and welding material welding crack sensibility, and the groove type of test test plate (panel) and size are shown in accompanying drawing 1-3, and process of the test and requirement refer to standard GB4675.1-84.The key of this test method is, when restraining weld seam welding, while guarantee root through welding, guarantee after contained weld seam has welded, guarantee test weld groove root gap is 2.0 ± 0.2mm, and ability soldering test weld seam, guarantees the accuracy of result of the test.In order to ensure contained root of weld through welding, before guaranteeing pilot seam welding, groove root gap ensures 2.0 ± 0.2mm, common way has two kinds: one is when welding contained weld seam, at the backing plate of pilot seam root (the slope Kou Chu in the A-A view of Fig. 2) preset about 2mm, after this mode has welded contained weld seam, pilot seam root constraint stress is very large, and preset backing plate cannot take out, so generally do not adopt; Another mode is: when welding contained weld seam, also reserve welding contracted quantity by reserved contained root gap of weld and carry out guarantee test weld groove root gap, but, because the size of welding contracted quantity and welding method, welding condition and welding process etc. have very large relation, be difficult to quantize, in addition, due to contained weld seam and pilot seam groove itself inconsistent, and can not failure test weld groove face during contained soldering seam grinding, actual back chipping operation easier is comparatively large, and workload is also large.As can be seen here, this traditional mode of operation, to the assembling of contained weld seam and welding requirements very high, implement very difficult, and pilot seam root gap ensures to be difficult at 2.0 ± 0.2mm, test plate (panel) scrappage is very high, so not only increase test test plate (panel) preparation work amount, also will cause the increase of experimentation cost, meanwhile, affect test efficiency and cycle.
Utility model content
The purpose of this utility model is: propose a kind of tiltedly Y type groove welding crack test method Double End notch test plate (panel), oblique Y type groove welding crack test method test root of weld groove gap object is controlled in order to quick, accurate, simultaneously, contained root of weld through welding can be ensured, guarantee that whole process of the test can be carried out smoothly.
The utility model object is realized by following technical proposals:
A kind of test plate (panel) of oblique Y type groove welding crack test method guarantee test weld gap, comprise the test test plate (panel) that GB GB4675.1-84 specifies, weld seam is formed between two test plate (panel)s in this national regulations, this weld seam is divided into the contained weld seam at two ends and middle pilot seam, restrain the lozenges of two test plate (panel) end faces all for being made up of upper and lower inclined-plane of commissure, the two test plate (panel) end faces at pilot seam place are respectively a lozenges and an integral ramp, and this lozenges and integral ramp form the oblique Y type groove of pilot seam; Test plate (panel) in the test plate (panel) of described improvement and described GB is distinguished and is: the upper lower inclined plane in the wedge face of described pilot seam, and the lozenges bodily sinkage that integral ramp all relatively adjacent two restrains weld seam is a notch, between pilot seam place two test plate (panel), preset clearance controls between 2.5 ~ 3.5mm, restrains fit-up gap between the test plate (panel) of commissure two and controls between 0.5 ~ 1mm.
In such scheme, the wedge face of described pilot seam and the notch submergence depth of integral ramp can be consistent, also can be inconsistent, but the preset clearance finally formed between the two controls between 2.5 ~ 3.5mm.
As selection, between described pilot seam place two test plate (panel), preset clearance controls between 3.15 ~ 3.25mm.
The main scheme of aforementioned the utility model and each further selection scheme thereof can independent assortment to form multiple scheme; be the utility model can adopt and claimed scheme: as the utility model; each selection can select any combination with other; those skilled in the art can understand there is multiple combination according to prior art and common practise after understanding the utility model scheme; be the claimed technical scheme of the utility model, do not do exhaustive at this.
The beneficial effects of the utility model: the utility model is by specially designed test plate (panel) and groove type thereof, in conjunction with specific welding method, can facilitate, control oblique Y type groove welding crack test method test weld groove root gap accurately, improve test plate (panel) and prepare qualification rate, guarantee that whole process of the test can be carried out smoothly, reduce experimentation cost and cycle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the test plate (panel) that specifies of standard GB4675.1-84 and groove type thereof;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is the structural representation of test plate (panel) of the present utility model and groove type thereof;
Fig. 5 is the A-A sectional view of Fig. 4;
Fig. 6 is the B-B sectional view of Fig. 4;
Fig. 7 is contained weld seam sequence of erection and welding schematic diagram of the present utility model;
Wherein 1: test plate (panel) I; 2: test plate (panel) II; 3: restrain weld seam I; 4: restrain weld seam II; 5: pilot seam; 6: pilot seam groove root gap; 7: restrain root gap of weld; 8: restrain weld seam welding sequence; 9: restrain weld seam wedge face; 10: pilot seam integral ramp; 11: pilot seam wedge face; 12: pilot seam notch.
Detailed description of the invention
Following non-limiting examples is for illustration of the utility model.
With reference to figure 4-7, a kind of test plate (panel) of oblique Y type groove welding crack test method guarantee test weld gap, comprise the test test plate (panel) that GB GB4675.1-84 specifies, weld seam is formed between two test plate (panel)s in this national regulations, this weld seam is divided into the contained weld seam at two ends and middle pilot seam, restrain the lozenges of two test plate (panel) end faces all for being made up of upper and lower inclined-plane of commissure, the two test plate (panel) end faces at pilot seam place are respectively a lozenges and an integral ramp, and this lozenges and integral ramp form the oblique Y type groove of pilot seam; Test plate (panel) in the test plate (panel) of described improvement and described GB is distinguished and is: the upper lower inclined plane in the wedge face of described pilot seam, and the lozenges bodily sinkage that integral ramp all relatively adjacent two restrains weld seam is a notch, between pilot seam place two test plate (panel), preset clearance controls between 2.5 ~ 3.5mm, and Optimal Control is between 3.15 ~ 3.25mm.Restrain fit-up gap between the test plate (panel) of commissure two to control between 0.5 ~ 1mm.
Adopt afore-mentioned test to carry out oblique Y type groove welding crack test method pilot seam gap ensuring method, comprise the following steps successively:
(1) test plate (panel) of improvement preparation and groove type thereof:
The test plate (panel) that the test plate (panel) improved specifies based on GB GB4675.1-84 improves, (see Fig. 1-3) two test plate (panel) (test plate (panel) I 1 in this national regulations, test plate (panel) II 2) between form weld seam, this weld seam is divided into the contained weld seam at two ends (to restrain weld seam I 3, restrain weld seam II 4) and centre pilot seam 5, restrain weld seam 3, two test plate (panel)s 1 at 4 places, 2 end faces are all for the lozenges be made up of upper and lower inclined-plane is (see Fig. 3, 5), the two test plate (panel) end faces at pilot seam place are respectively a lozenges and an integral ramp (see Fig. 2, 6), this lozenges and integral ramp form the oblique Y type groove of pilot seam, test plate (panel) in the test plate (panel) of described improvement and GB is distinguished and is (see Fig. 4-6): the upper lower inclined plane of the lozenges 11 of pilot seam, and integral ramp 10 all relatively adjacent two lozenges 9 bodily sinkage of restraining weld seam be a notch 12(be, in GB, the lozenges of pilot seam and integral ramp are all come by the lozenges of contained weld seam is laterally extending, the test plate (panel) that the utility model improves is then relatively restrain weld seam section bodily sinkage one notch at this lozenges of pilot seam section), between pilot seam place two test plate (panel), preset clearance (i.e. pilot seam groove root gap 6) controls between 2.5 ~ 3.5mm (see Fig. 6), optimum value is between 3.15 ~ 3.25mm, restrain fit-up gap between the test plate (panel) of commissure two (namely restraining root gap of weld 7) to control between 0.5 ~ 1mm (see Fig. 5, 7),
(2) weld seam (see Fig. 7) is restrained by following welding sequence welding:
The 1. ~ 4. road or layer adopt GTAW welding, welding wire specification φ 2.5, welding current 220 ~ 230A;
The 5. ~ 8. road or layer adopt SMAW welding, welding rod specification φ 3.2, welding current 125 ~ 130A;
All the other welding beads or layer adopt SMAW welding, welding rod specification φ 5.0, welding current 220 ~ 230A;
During GTAW welding, adopt and be interrupted from molten+a small amount of the welding manner filled silk, and, control that interlayer temperature is the highest is no more than 250 DEG C; After GTAW welding, follow-up SMAW welding bead or layer adopt continuously, welding mode fast; When test plate (panel) material has preheating requirement, carry out preheating before restraining weld seam welding, contained weld seam welding wlding and test plate (panel) mother metal match.
Be below one of instantiation of the present utility model, be described with the example that is prepared as evaluating 12Cr1MoVGR steel plate reheat cracking susceptibility test test plate (panel), test plate (panel) specification is δ 38mm.
By accompanying drawing 4-6 groove type and dimensioned test plate (panel) groove, pilot seam preset clearance is 3.1 ~ 3.3mm, and fit-up gap controls within 0.7 ~ 0.9mm, adopts GTAW spot welding two ends.
Be soldered contained weld seam by the welding sequence of accompanying drawing 7 requirement, preweld cleaning is to presenting metallic luster, and preheating 200-250 DEG C; 1. ~ 4. road (or layer) adopt GTAW welding, and welding wire adopts H05CrMoVTiReA, specification φ 2.5, welding current 220 ~ 230A; 5. ~ 8. road (or layer) adopt SMAW welding, and welding rod adopts CHH317, specification φ 3.2, welding current 125 ~ 130A; All the other welding beads (or layer) adopt SMAW welding, and welding rod adopts CHH317, specification φ 5.0, welding current 220 ~ 230A.
After contained weld seam has welded, clearance gauge is adopted to measure pilot seam groove root gap, actually be welded test plate (panel) fourth officer, measurement result is respectively: 2.10mm, 2.00 ~ 2.10 mm, 1.90 ~ 2.00 mm and 2.00 mm, all within the scope of 2.0 ± 0.2mm of standard regulation.
Restrain weld seam 100%MT+100%RT defect detecting test qualified, restrain weld seam macroscopic examination and do not find defect.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. an oblique Y type groove welding crack test method Double End notch test plate (panel), comprise the test test plate (panel) that GB GB4675.1-84 specifies, weld seam is formed between two test plate (panel)s in this national regulations, this weld seam is divided into the contained weld seam at two ends and middle pilot seam, restrain the lozenges of two test plate (panel) end faces all for being made up of upper and lower inclined-plane of commissure, the two test plate (panel) end faces at pilot seam place are respectively a lozenges and an integral ramp, and this lozenges and integral ramp form the oblique Y type groove of pilot seam; Test plate (panel) in the test plate (panel) of described improvement and described GB is distinguished and is: the upper lower inclined plane in the wedge face of described pilot seam, and the lozenges bodily sinkage that integral ramp all relatively adjacent two restrains weld seam is a notch, between pilot seam place two test plate (panel), preset clearance controls between 2.5 ~ 3.5mm, restrains fit-up gap between the test plate (panel) of commissure two and controls between 0.5 ~ 1mm.
2. tiltedly Y type groove welding crack test method Double End notch test plate (panel) as claimed in claim 1, is characterized in that: between described pilot seam place two test plate (panel), preset clearance controls between 3.15 ~ 3.25mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520309149.8U CN204735860U (en) | 2015-05-14 | 2015-05-14 | Y type groove welds two end face slot mouth test panel of cracking test method to one side |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827170A (en) * | 2015-05-14 | 2015-08-12 | 东方电气集团东方锅炉股份有限公司 | Test weld gap clearance ensuring method in oblique Y-groove weld cracking test method and test plate |
| CN105445434A (en) * | 2015-12-22 | 2016-03-30 | 宝山钢铁股份有限公司 | Pipeline steel pipe on-site girth welding evaluation method |
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2015
- 2015-05-14 CN CN201520309149.8U patent/CN204735860U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827170A (en) * | 2015-05-14 | 2015-08-12 | 东方电气集团东方锅炉股份有限公司 | Test weld gap clearance ensuring method in oblique Y-groove weld cracking test method and test plate |
| CN105445434A (en) * | 2015-12-22 | 2016-03-30 | 宝山钢铁股份有限公司 | Pipeline steel pipe on-site girth welding evaluation method |
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