CN103472131A - Apparatus for detecting axial residual stress of cold-drawn steel tube - Google Patents
Apparatus for detecting axial residual stress of cold-drawn steel tube Download PDFInfo
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- CN103472131A CN103472131A CN2013104430432A CN201310443043A CN103472131A CN 103472131 A CN103472131 A CN 103472131A CN 2013104430432 A CN2013104430432 A CN 2013104430432A CN 201310443043 A CN201310443043 A CN 201310443043A CN 103472131 A CN103472131 A CN 103472131A
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Abstract
The invention discloses an apparatus for detecting axial residual stress of a cold-drawn steel tube, belonging to the technical field of cold-drawn steel tube stress detection. The apparatus comprises an ultrasonic detection device and a supporting roller device, wherein the ultrasonic detection device comprises a detection frame; the detection frame is fixed with a detection outer tank; the lower part in the detection outer tank contains a standby detection liquid; the upper part in the detection outer tank is provided with a detection inner tank; a detection liquid is contained in the detection inner tank; an ultrasonic probe and a water pump which are arranged in the detection liquid are arranged in the detection inner tank; the water pump is communicated with the detection outer tank through a pipeline; the detection outer tank and the detection inner tank are respectively provided with a through hole for penetration of a steel tube to be detected; the supporting roller device comprises a plurality of machine frames; each machine frame is provided with a bracket; a supporting roller and a motor driving the supporting roller to rotate are mounted on the bracket; and all the supporting rollers are positioned on the same height. The apparatus can quickly and accurately measure axial residual stress of a cold-drawn steel tube and increase production qualification rate of the cold-drawn steel tube.
Description
Technical field
The present invention relates to the axial unrelieved stress pick-up unit of a kind of cold drawing steel tube, belong to cold drawing steel tube stress detection field.
Background technology
The cold-drawn high-precision production of China has had the time of decades till now from starting, see and now not only can strength one's very own produce drawn tube from basic scale, and formed the yearly capacity of tens myriametres, should say that this has been no small progress.But in the Tube Drawing process, normal pressure and friction force are axial on product, the impact of hoop unrelieved stress is machine-processed, the follow-up machining processes of steel tube inner hole also is short of the research that affects the aspects such as rule of residual stress distribution feature very much, unrelieved stress on steel pipe final size precision, form accuracy and load-bearing capacity to affect rule not fully aware of yet, this has directly affected the stability in use of product.For example generally hot rolled pipe can obtain the extension plastic yield of 30% left and right by cold-drawn, therefore can pass through reasonable arrangement technique, make cold drawing steel tube under the prerequisite that keeps certain plasticity, suitably improve its tensile strength and hardness, to give full play to the potential of steel, improve stock utilization.But if in Cold Drawing Process, unrelieved stress is not effectively controlled, the mechanical mechanics property of drawn tube not only can not rise, and can descend on the contrary.Yet owing to relating to Large Elastic-Plastic Deformation and contact nonlinear problem in the Tube Drawing process, also comprised heat engine coupled field etc. in following process, even adopt some large-scale multiple physical field analysis software to carry out numerical simulation at present, also there are many difficulties when analyzing unrelieved stress.Research and comparison with numerical simulation, experimental study work is more relatively backward, at present except measuring in laboratory Drawing Force, also not to the relevant report of residual stress distribution experimental study work, although the instrument of measuring unrelieved stress is arranged, can't measure the unrelieved stress of steel pipe internal-surface.Therefore production scene in the urgent need to a kind of can be fast, the equipment of Measurement accuracy cold drawing steel tube unrelieved stress.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art part, the invention provides the axial unrelieved stress checkout equipment of a kind of cold drawing steel tube, can be fast, the axial unrelieved stress of Measurement accuracy cold drawing steel tube, improve the production qualification rate of cold drawing steel tube.
The present invention is achieved through the following technical solutions: the axial unrelieved stress checkout equipment of a kind of cold drawing steel tube, it comprises ultrasonic detection device and is positioned at the support roller device of ultrasonic detection device both sides, described ultrasonic detection device comprises testing stand, be fixed with the detection outer container on testing stand, detect bottom in outer container redundant detection liquid is housed, detect the outer container inner and upper case in detection is installed, in case, tracer liquid is housed in detecting, be provided with ultrasonic probe and the water pump be placed in described tracer liquid in detecting in case, water pump is connected with described detection outer container by pipeline, be manufactured with the through hole passed for tested steel pipe on case in described detection outer container and detection, described support roller device comprises a plurality of frames, and bearing is housed on frame, carrying roller is housed on bearing and drives the motor that carrying roller rotates, and all carrying rollers are positioned on sustained height.
Described carrying roller comprises the running roller of two umbrella shapes that are oppositely arranged, and forms the holder mouthful of " V " shape between two running rollers, and running roller is arranged on wheel shaft, and wheel shaft is arranged on described bearing by bearing is rotating, between wheel shaft and described motor, reductor is housed.
The invention has the beneficial effects as follows:
1, detect unrelieved stress because the present invention adopts cordless, can not damage steel pipe.
2, the present invention can detect the axial residual stress distribution situation of steel pipe quickly and accurately, improves the production qualification rate of cold drawing steel tube.
3, the present invention is easy and simple to handle, easily implements.
The accompanying drawing explanation
Below the present invention is further described according to drawings and embodiments.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1.
In figure, 1, motor, 2, reductor, 3, carrying roller, 3-1, running roller, 3-2, wheel shaft, 3-3, bearing, 4, frame, 5, foot bolt, 6, tested steel pipe, 7, detect outer container, 8, water pump, 9, ultrasonic probe, 10, detect in case, 11, testing stand.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
As Fig. 1, Fig. 2, the axial unrelieved stress checkout equipment of a kind of cold drawing steel tube shown in Fig. 3, it comprises ultrasonic detection device and is positioned at the support roller device of ultrasonic detection device both sides, described ultrasonic detection device comprises testing stand 11, be fixed with on testing stand 11 and detect outer container 7, detect the interior bottom of outer container 7 redundant detection liquid is housed, detect outer container 7 inner and upper case 10 in detection is installed, in detecting, case 10 bottoms can be weldingly fixed on and detect in outer container 7 by gusset, in case 10, tracer liquid is housed in detecting, be provided with ultrasonic probe 9 and the water pump 8 be placed in described tracer liquid in detecting in case 10, water pump 8 is connected with described detection outer container 7 by pipeline, be manufactured with the through hole passed for tested steel pipe 6 on case 10 in described detection outer container 7 and detection, described support roller device comprises a plurality of frames 4, and bearing 3-3 is housed on frame 4, carrying roller 3 is housed on bearing 3-3 and drives the motor 1 that carrying roller 3 rotates, and all carrying rollers 3 are positioned on sustained height.
Described carrying roller 3 comprises the running roller 3-1 of two umbrella shapes that are oppositely arranged, form the holder mouthful of " V " shape between two running roller 3-1, it is upper that running roller 3-1 is arranged on wheel shaft 3-2, and wheel shaft 3-2 is arranged on described bearing 3-3 above by bearing is rotating, between wheel shaft 3-2 and described motor 1, reductor 2 is housed.
The present invention uses for example: No. 45 pipe diameters of external diameter 100mm, internal diameter 80mm, long 5m through the cold-drawn hole enlargement to 85mm, for detecting the distribution of steel shaft to unrelieved stress, steel pipe is placed on carrying roller of the present invention, start motor, the rotation of drive carrying roller, drive tested steel pipe to move axially.The ultrasound wave that ultrasonic probe sends is vertically injected steel pipe walls by aqueous medium, after the steel pipe inner wall reflection, by ultrasonic probe, is received.Character and size according to the features such as the wave amplitude of the reflection supersonic wave received, velocity of propagation judgement unrelieved stress.After steel pipe one side has inspected, by steel pipe rotary 180 degree, motor reversal, drive steel pipe to be moved back, and detects the opposite side of steel pipe.
Claims (2)
1. the axial unrelieved stress checkout equipment of cold drawing steel tube, it is characterized in that: it comprises ultrasonic detection device and is positioned at the support roller device of ultrasonic detection device both sides, described ultrasonic detection device comprises testing stand (11), be fixed with on testing stand (11) and detect outer container (7), detect the interior bottom of outer container (7) redundant detection liquid is housed, detect outer container (7) inner and upper case (10) in detection is installed, in case (10), tracer liquid is housed in detecting, be provided with ultrasonic probe (9) and the water pump (8) be placed in described tracer liquid in detecting in case (10), water pump (8) is connected with described detection outer container (7) by pipeline, be manufactured with the through hole passed for tested steel pipe (6) on case (10) in described detection outer container (7) and detection, described support roller device comprises a plurality of frames (4), and bearing (3-3) is housed on frame (4), carrying roller (3) is housed on bearing (3-3) and drives the motor (1) that carrying roller (3) rotates, and all carrying rollers (3) are positioned on sustained height.
2. the axial unrelieved stress checkout equipment of cold drawing steel tube according to claim 1, it is characterized in that: described carrying roller (3) comprises the running roller (3-1) of two umbrella shapes that are oppositely arranged, form the holder mouthful of " V " shape between two running rollers (3-1), running roller (3-1) is arranged on wheel shaft (3-2), wheel shaft (3-2) is arranged on described bearing (3-3) above by bearing is rotating, between wheel shaft (3-2) and described motor (1), reductor (2) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104430432A CN103472131A (en) | 2013-09-25 | 2013-09-25 | Apparatus for detecting axial residual stress of cold-drawn steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104430432A CN103472131A (en) | 2013-09-25 | 2013-09-25 | Apparatus for detecting axial residual stress of cold-drawn steel tube |
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| CN103472131A true CN103472131A (en) | 2013-12-25 |
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| CN2013104430432A Pending CN103472131A (en) | 2013-09-25 | 2013-09-25 | Apparatus for detecting axial residual stress of cold-drawn steel tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808805A (en) * | 2014-03-12 | 2014-05-21 | 北京理工大学 | Ultrasonic non-destructive testing method for residual stress of inner and outer roller paths of roller bearing |
| JP2022527040A (en) * | 2019-04-05 | 2022-05-30 | ジョイント ストック カンパニー“ロスエネルゴアトム” | Calculation method of residual stress of seam metal of pipeline joint |
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2013
- 2013-09-25 CN CN2013104430432A patent/CN103472131A/en active Pending
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| US6523418B2 (en) * | 1998-07-30 | 2003-02-25 | Don E. Bray | Apparatus and method for ultrasonic stress measurement using the critically refracted longitudinal (Lcr) ultrasonic technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808805A (en) * | 2014-03-12 | 2014-05-21 | 北京理工大学 | Ultrasonic non-destructive testing method for residual stress of inner and outer roller paths of roller bearing |
| JP2022527040A (en) * | 2019-04-05 | 2022-05-30 | ジョイント ストック カンパニー“ロスエネルゴアトム” | Calculation method of residual stress of seam metal of pipeline joint |
| JP7377226B2 (en) | 2019-04-05 | 2023-11-09 | ジョイント ストック カンパニー“ロスエネルゴアトム” | Calculation method for residual stress in joint metal of pipeline joints |
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Application publication date: 20131225 |