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Deformed steel bar surface flaw repairing process

A technology for surface defects and rebars, which is applied in the field of repairing the surface defects of rebars, can solve the problems of easy missed inspection, difficulty in inspection, low inspection efficiency, etc., so as to avoid false inspections, improve inspection efficiency and accuracy, and improve repair strength. Effect

Active Publication Date: 2021-10-08
北京天润恒远工贸有限公司
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Problems solved by technology

[0004] Flaws will inevitably appear during the processing of threaded steel. Most of the existing detection methods are manually checked by technicians one by one, especially for the gaps or deformations (depressions or protrusions) on the thread, which is particularly difficult to check. Low efficiency and prone to missed detection

Method used

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  • Deformed steel bar surface flaw repairing process
  • Deformed steel bar surface flaw repairing process
  • Deformed steel bar surface flaw repairing process

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Embodiment 1

[0045] see Figure 1-2 , a rebar surface defect repair process, comprising the following steps:

[0046] S1. Insert the rebar to be repaired in the matching detection sleeve, and then put a plurality of detection balls in sequence from the opening, and the detection balls slide along the surface thread of the rebar for detection;

[0047] S2. After the inspection, determine the repair plan according to the inspection results, and cut and remove the defects;

[0048] S3. Make a matching repair block according to the size of the removed part, and install it to the removed part;

[0049] S4. Laser cladding welding is performed on the repair block and the removed part, and the stress is removed in real time;

[0050] S5. After the welding part is cooled, finish machining and inspection to meet the size and strength requirements of the rebar.

[0051] In step S4, the cladding material is selected from iron-based and cobalt-based alloys, the laser power is 1500-2500W, the inert g...

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Abstract

The invention discloses a deformed steel bar surface flaw repairing process, and belongs to the technical field of stainless steel. A deformed steel bar can be detected by innovatively introducing a detection sleeve and detection balls. The deformed steel bar is only required to be inserted into the detection sleeve, and then a plurality of detection balls are sequentially put from an opening. The detection balls can automatically slide down along a thread on the surface of the deformed steel bar and detect flaws on the thread in the sliding-down process. Once the thread has a notch or deforms, the detection balls can adapt to the notch or the deformation so as to trigger the extrusion action on internal elastic oil absorption blocks, and marking liquid is released to mark the flaws. Meanwhile, the multiple detection balls are used for simultaneous detection, so that the detection efficiency and precision can be improved, and meanwhile the situation that the detection is broken due to the clamping condition can be avoided. The deformed steel bar is taken out after detection is finished, flaws can be repaired according to the marked position. The repair strength is improved through a laser cladding technology, and thus the detection and repair efficiency of the deformed steel bar is greatly improved.

Description

technical field [0001] The invention relates to the technical field of stainless steel, in particular to a process for repairing surface flaws of threaded steel. Background technique [0002] Stainless steel is the abbreviation of stainless acid-resistant steel, and the steel grades that are resistant to weak corrosive media such as air, steam, water, or have stainless properties are called stainless steel; The steel grade is called acid-resistant steel. Due to the difference in chemical composition of the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel is generally stainless. The term "stainless steel" does not simply refer to one kind of stainless steel, but refers to more than one hundred kinds of industrial stainless steels, and each developed stainless steel has good performance in its specific application field. The key to success is first to understand the purp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00C23C24/10
CPCB23P6/00C23C24/103Y02P70/10
Inventor 黄玩粧黄邦民江金梅
Owner 北京天润恒远工贸有限公司
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