Method for detecting cracking of weld seam of withdrawal and straightening machine

Abstract

The invention discloses a method for detecting cracking of a weld seam of a withdrawal and straightening machine. A grating detector is installed in the rear of a last correction roller in front of the withdrawal and straightening machine of a pickling and rolling combined unit to detect a steel strip, wherein an emitter of the grating detector emits light source signals, a receiver of the grating detector receives the light source signals, due to blocking of the steel plate (steel strip), the grating detector cannot sense the signals, the fact that the grating detector senses the signals shows that a weld seam cracking phenomenon of the steel plate arises, and an emergency stop signal is sent by the grating detector to a production line; and the receiver of the grating detector is in a shape of a long strip, and the emitter of the grating detector can move freely along a guiding rail. The invention aims to provide the method for detecting cracking of the weld seam of the withdrawal and straightening machine. By means of the method for detecting cracking of the weld seam of the withdrawal and straightening machine, the grating (grating detector) can detect weld seam situations of the steel plate in time, and whether or not the production line needs an emergency cut-off is judged according to the weld seam situations of the steel plate, so that the production efficiency is improved, and the accident time is shortened.

Description

technical field

[0001] The invention relates to a method for detecting the open welding of the welding seam of a tension leveling machine. Background technique

[0002] The pickling production line is a production line that converts hot-rolled raw materials into cold-rolled steel coils through transportation, decoiling, straightening, welding, tension leveling, pickling, edge trimming, rolling, and coiling. Its main technological process is that the hot-rolled coil is transported from the raw material storage to the cold-rolled cross-walking beam. Coil outer diameter measurement device, steel coil width detection device, and steel coil weighing station are arranged on the walking beam. After the steel coil outer diameter data is recorded, the coiling trolley can automatically position the hot-rolled coils to the uncoiler respectively. Corresponding mandrel height. A centering device is also arranged to correct the misalignment of the coil position. The centered steel coil...

Examples

Embodiment Construction

[0020] A method for detecting the open welding of tension-leveler weld seams, in which a grating detector 6 is installed at the rear of No. 3 deviation-correcting roll 4 of the acid-rolling combined unit (i.e. behind the last deviation-correcting roll before the tension-leveler) to detect the steel strip, See the specific configuration location figure 1 , the emitter 601 of the grating emits the light source signal, and the receiver 602 of the grating receives the light source signal. Under normal production conditions, due to the barrier of the steel plate, the grating cannot sense the signal. Once the signal is sensed by the grating, it means that the weld seam of the steel plate is open. The grating detector 6 sends an emergency stop signal to the production line, and the operator checks and confirms the weld seam .

[0021] The raw material of the acid-rolling combined unit suitable for the present invention comes from the CSP production line or the production line whose ...

technical field

[0001] The invention relates to a method for detecting the open welding of the welding seam of a tension leveling machine. Background technique

[0002] The pickling production line is a production line that converts hot-rolled raw materials into cold-rolled steel coils through transportation, decoiling, straightening, welding, tension leveling, pickling, edge trimming, rolling, and coiling. Its main technological process is that the hot-rolled coil is transported from the raw material storage to the cold-rolled cross-walking beam. Coil outer diameter measurement device, steel coil width detection device, and steel coil weighing station are arranged on the walking beam. After the steel coil outer diameter data is recorded, the coiling trolley can automatically position the hot-rolled coils to the uncoiler respectively. Corresponding mandrel height. A centering device is also arranged to correct the misalignment of the coil position. The centered steel coil...

Examples

Embodiment Construction

[0020] A method for detecting the open welding of tension-leveler weld seams, in which a grating detector 6 is installed at the rear of No. 3 deviation-correcting roll 4 of the acid-rolling combined unit (i.e. behind the last deviation-correcting roll before the tension-leveler) to detect the steel strip, See the specific configuration location figure 1 , the emitter 601 of the grating emits the light source signal, and the receiver 602 of the grating receives the light source signal. Under normal production conditions, due to the barrier of the steel plate, the grating cannot sense the signal. Once the signal is sensed by the grating, it means that the weld seam of the steel plate is open. The grating detector 6 sends an emergency stop signal to the production line, and the operator checks and confirms the weld seam .

[0021] The raw material of the acid-rolling combined unit suitable for the present invention comes from the CSP production line or the production line whose ...

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