KR100768322B1 - Mineral-annealing roll online dressing apparatus - Google Patents

Abstract

A mineral-annealing roll online dressing apparatus is provided to perform a grinding process on the surface of a mineral-annealing roll for dressing the mineral-annealing roll in on-line, thereby improving productivity. A mineral-annealing roll online dressing apparatus comprises a mineral-annealing roll(300), a mineral-annealing roll lifting unit, a mineral-annealing roll dressing unit, and a ventilation unit. The mineral-annealing roll is inserted into a screw shaft(330) installed at a first deceleration device(320) connected with a mineral-annealing roll motor(310) to support the lower surface of a stainless strip(500) before passing the annealing roll. The mineral-annealing lifting unit moves up and down the mineral-annealing roll. The mineral-annealing roll dressing unit is arranged for performing a grinding process when the surface of the mineral-annealing roll is damaged. The ventilation unit discharges the dust and particles generated in the grinding process from the surface of the mineral-annealing roll.

Description

Mineral-annealing roll online dressing apparatus

Figure 1 is a schematic side cross-sectional view showing a general mineral annealing roll processing apparatus.

Figure 2 is a schematic side cross-sectional view of the mineral annealing roll online dressing device according to the present invention.

Figure 3 is a perspective view of the mineral annealing roll online dressing device according to the present invention.

Figure 4 is a partially enlarged view of the mineral annealing roll online dressing device according to the present invention.

※ Code explanation about main part of drawing ※

100: annealing furnace 200: cooling stand

300: mineral annealing roll 310: mineral annealing roll motor

320: first reducer 330: screw shaft

400: annealing roll 500: stainless strip

700: mineral annealing roll up / down means 710: vertical moving frame

720: detector 721: chain

730: second reduction gear 740: lifting motor

800: mineral annealing roll dressing means 810: screw shaft

820: guide shaft 830: dressing block

831: moving block 840: dressing motor

850: stone 860: cylinder

870: mobile motor 900: exhaust means

910: cylinder 911: nozzle

920: exhaust pipe 930: exhaust fan

931: vent

The present invention relates to a mineral annealing roll online dressing apparatus, and more particularly, the polishing operation of the mineral annealing roll provided to support the stainless strip passing through the annealing roll during the annealing pickling process can be performed on-line without interrupting production. It relates to a mineral annealing roll online dressing device configured to be.

In general, an annealing plant in a cold rolling mill of a steel mill supports an annealing furnace for heating and slowly cooling the metal to a temperature slightly below the melting point, and supporting the lower surface of the stainless strip which is running at a constant speed. The rotary motor is equipped with a mineral annealing roll that rotates at the same speed as the traveling speed of the stainless strip.

As shown in FIG. 1, during the production of the stainless coil, the stainless strip 500 is subjected to an annealing process after hot rolling or cold rolling, that is, an annealing process 100 and a mineral annealing roll supporting the lower surface of the stainless steel strip 500. After passing through the annealing roll 400 of the cooling table 200 through the 300, the stainless strip 500 during the annealing pickling process passes the mineral annealing roll 500, Surface damage of the annealing roll 500 is made.

Thus, when the mineral annealing roll supporting the stainless strip bottom surface damage of the mineral annealing roll occurs due to the introduction of foreign matters, the mineral annealing roll was polished to protect the surface of the stainless strip and to produce a smooth surface.

However, in the conventional case, in order to perform the polishing operation of the mineral annealing roll, the production work is suspended and the worker extinguishes each burner of the annealing furnace offline so that the temperature is lower than a predetermined temperature for polishing work. Directly entering the annealing furnace provided with the mineral annealing roll was carried out polishing the surface of the mineral annealing roll using a sandpaper or a polishing tool while rotating the damaged mineral annealing roll.

In this way, since the worker has to manually grind the surface of the mineral annealing roll by hand, the worker's work load is very large and the waiting time is long, which greatly reduces the productivity of work and also has to work inside the annealing furnace. There is a big problem that there is a concern that a safety accident such as burn and roll stenosis accidents are caused by environmental conditions.

In addition, if the surface damage of the mineral annealing roll is severe, the mineral annealing roll should be replaced, but if the replacement of the mineral annealing roll is delayed, the productivity may be reduced, such as defects in the strip due to the operation of the overheated strip and the damaged mineral annealing roll. The problem was caused by deterioration of product quality.

The present invention has been proposed to solve the above problems, while performing the work of annealing the stainless strip, the surface of the mineral annealing roll with the surface damaged and foreign matter attached to the annealing roll during the polishing operation of the mineral annealing roll surface It is an object of the present invention to solve the problems caused by safety accidents and reduced productivity quality of the worker by providing a device that enables a safe dressing.

The mineral annealing roll online dressing device structure according to the present invention for achieving the above object is to polish the surface when the surface of the mineral annealing roll is provided to support the stainless strip passing through the annealing roll during the annealing process In the mineral annealing roll polishing apparatus provided, the mineral annealing roll motor, the reducer connected to the mineral annealing roll motor, and the screw shaft installed in the reducer and the screw shaft to support the lower surface of the stainless strip before passing through the annealing roll And a mineral annealing roll, a mineral annealing roll raising / lowering means connected to raise and lower the mineral annealing roll, a mineral annealing roll dressing means provided for grinding the surface when the surface of the mineral annealing roll is damaged, and In accordance with the operation of the dressing means, the dust and particles polished on the surface of the mineral annealing roll It includes exhaust means configured to be invoked.

Hereinafter, the configuration of the mineral annealing roll online dressing apparatus according to the present invention and the embodiments thereof will be described in more detail with reference to the accompanying drawings.

Figure 2 is a view showing a schematic side cross-sectional view of the mineral annealing roll online dressing apparatus according to the present invention, Figure 3 is a view showing a perspective view of the mineral annealing roll online dressing device according to the present invention, Figure 4 Partial magnification of the mineral annealing roll online dressing device.

In the mineral annealing roll polishing apparatus provided to polish the surface of the mineral annealing roll which is a component provided to support the stainless strip passing through the annealing roll during the annealing pickling process, passing through the annealing roll 400 In order to support the lower surface of the stainless strip 500 before the mineral annealing roll motor 310 and the mineral annealing roll motor 310 and the first reduction gear 320 and the screw shaft installed in the first reduction gear 320 ( 330 and the mineral annealing roll 300 fitted to the screw shaft 330 is provided.

A mineral annealing roll raising / lowering means 700 connected to the mineral annealing roll 300 is provided to raise / lower the mineral annealing roll 300.

The foreign material is joined between the stainless strip 500 passing through the surface of the mineral annealing roll 300 and the mineral annealing roll dressing means 800 to polish the damaged surface when the surface of the mineral annealing roll 300 is damaged. To be prepared.

In accordance with the operation of the mineral annealing roll dressing means 800 includes the exhaust means 900 configured to discharge the dust and particles polished from the surface of the mineral annealing roll 300.

In addition, the mineral annealing roll raising / lowering means 700 is installed in connection with the mineral annealing roll 300, the vertical moving frame 710 to raise / lower for the surface grinding processing of the mineral annealing roll 300 annealing It is provided on both sides of the processing apparatus, and is connected to the side of the vertical frame 710 by a chain 721 to move vertically by the movement of the chain 721 that moves in accordance with the rise / fall of the vertical frame 710. The sensing unit 720 is provided so as to determine the falling position of the frame 710, the second movable frame 710 is installed in connection with the vertical movable frame 710 to power up / down A reducer 730 is provided, and is connected to the second reducer 730 to operate the second reducer 730 to move up / down to power up / down the vertical frame 710. It consists of a motor 740.

In addition, the mineral annealing roll dressing means 800 is a screw shaft 810 and the guide shaft 820 is provided to be able to polish the surface of the mineral annealing roll 300 while moving the left / right surface of the mineral annealing roll 300 A dressing block 830 is provided to be fitted to the screw shaft 810 and the guide shaft 820 so as to be moved left and right. The dressing block 830 is installed on an upper surface of the dressing block 830. A moving block 831 is provided to be moved forwards and backwards in an upper surface, and is connected to the dressing motor 840 installed on the moving block 831 and the dressing motor 840 to the mineral annealing roll 300. And a stone 850 provided to polish the surface of the crankshaft, a cylinder 860 installed on the dressing block 830 to advance the moving block 831, and a screw shaft 810. A moving motor 870 connected to apply power to the dressing block 830 to be moved left / right. It consists of.

The dressing block 830 fitted to the screw shaft 810 and the guide shaft 820 by the operation of the moving motor 870 is moved left / right by the rotation of the screw shaft 810 and the guide shaft 820 Is guided left / right without flow.

In addition, the mineral annealing roll exhaust means 900 is provided with a cylinder 910 in which dust and particles that are ground on the surface of the mineral annealing roll 300 are collected, and at least two or more nozzles 911 on the bottom surface of the cylinder. Is installed, and the exhaust fan 930 to be driven to suck the dust and particles polished by the low stone 850 in the mineral annealing roll 300 through each of the two or more nozzles (911). In addition, the exhaust port 930 is installed on the lower side of the exhaust fan 930 to drive the exhaust fan 930 to collect dust and particles of the mineral annealing roll 300 collected toward the exhaust fan 930 side to the outside ( 931).

Hereinafter, an embodiment of the operation of the mineral annealing roll online dressing apparatus according to the present invention.

When dressing polishing is performed by damage of the mineral annealing roll 300, dressing is performed using the annealing furnace mineral annealing roll online dressing apparatus according to the present invention installed between the annealing furnace 100 and the annealing furnace 100.

In order to polish the surface of the mineral annealing roll 300, the mineral annealing roll 300 is lowered using the mineral annealing roll raising / lowering means 700 so that the stainless strip 500 is supported only on the annealing roll 400. The operation is performed when the lifting motor 740 of the mineral annealing roll raising / lowering means 700 is operated, and the second reduction gear 730 connected to the lifting motor 740 is operated and the second reduction gear ( By the operation of the 730 is the mineral annealing roll 300 attached to the vertical frame 710 is to be lowered.

Thereafter, as the vertical frame 710 descends, the chain 721 connected to the vertical frame 710 moves and moves by the sensing unit 720 due to the movement of the moved chain 721. The worker will recognize the falling position of the vertical frame (710).

When the lowering of the mineral annealing roll 300 by the operation of the mineral annealing roll raising / lowering means 700 is completed, the mineral annealing roll dressing means 800 is operated on the moving motor 870 and the dressing block 830 As the dressing motor 840 is operated, the bottom stone 850 installed in the dressing motor 840 is polished on the surface of the mineral annealing roll 300. The surface polishing of the mineral annealing roll 300 is performed on the dressing block 830. As the cylinder 860 provided therein acts, the moving block 831 is pushed to contact the surface of the mineral annealing roll 300, and the dressing block 830 penetrates the dressing block 830. The left and right movement along the 810 and the guide shaft 820 is to polish the surface of the mineral annealing roll (300).

In this way, the dust and particles of the mineral annealing roll 300 generated during the polishing of the surface of the mineral annealing roll 300 are collected in a cylinder 910, and at least two or more nozzles 911 provided on the bottom surface of the cylinder are collected. The dust and particles thus polished are collected by the operation of the exhaust fan 930, and are provided in the exhaust fan 930 to exhaust dust and particles collected by the exhaust fan 930 to the outside ( 931).

According to the mineral annealing roll online dressing apparatus according to the present invention as described above, the mineral annealing roll in the process of passing through the annealing roll during the annealing pickling process that undergoes an annealing process after the hot rolling or cold rolling of the stainless strip in the production process of the stainless coil The mineral annealing roll, which is frequently replaced due to surface damage, can be polished on the surface of the mineral annealing roll, so that the replacement is delayed and defects generated on the strip due to the overheating of the strip and the operation of the damaged roll are removed online. By enabling the annealing roll dressing, the productivity of the mineral annealing roll replacement time can be improved, and the practical effect of preventing accidents and reducing costs of workers can be obtained.

Claims (4)

In the mineral annealing roll polishing apparatus provided to polish the surface of the mineral annealing roll provided to support the stainless strip passing through the annealing roll during the annealing pickling process, In order to support the lower surface of the stainless strip 500 before passing through the annealing roll 400, the mineral annealing roll motor 310 and the first reducer 320 and the reducer connected to the mineral annealing roll motor 310 ( A screw shaft 330 installed at 320 and a mineral annealing roll 300 fitted to the screw shaft 330; Mineral annealing roll lifting / lowering means 700 is installed so as to raise / lower the mineral annealing roll 300; Mineral annealing roll dressing means 800 provided for grinding the surface when the surface of the mineral annealing roll 300 is damaged; And, Mineral annealing roll on-line comprising a; an exhaust means (900) configured to discharge the dust and particles polished from the surface of the mineral annealing roll 300 in accordance with the operation of the mineral annealing roll dressing means (800) Dressing device. According to claim 1, The mineral annealing roll raising / lowering means 700 is connected to the mineral annealing roll 300 is installed vertically moving frame 710 for raising and lowering the mineral annealing roll 300, and Chain 721 is connected to the vertical frame 710 so as to determine the falling position of the vertical frame 710 due to the movement of the chain 721 is moved in accordance with the rise / fall of the vertical frame 710. A second reducer 730 provided to be connected to the sensing unit 720 and the vertical moving frame 710 so that the vertical moving frame 710 can move up and down, and the second reducer 730 Mineral annealing roll on-line dressing device, characterized in that consisting of the lifting motor 740 is connected to configure the power to the second reducer (730). The method of claim 1, wherein the mineral annealing roll dressing means 800 is a screw shaft 810 and a guide shaft 820 and the screw is provided so as to be grinding while moving the surface of the mineral annealing roll 300, the screw Dressing block 830 is provided to be moved to the left / right by being fitted to the shaft 810 and the guide shaft 820, the moving block 831 is provided to be installed on the upper surface of the dressing block 830 and forward and backward; A dressing motor 840 installed on the copper block 831, a bottom stone 850 connected to the dressing motor 840 and provided to polish the surface of the mineral annealing roll 300; A cylinder 860 installed on the dressing block 830 to move the moving block 831, and connected to the screw shaft 810 so that the dressing block 830 can be moved left / right. Mineral annealing roll online drawer, characterized in that consisting of a moving motor 870 to apply power Singh device. The method of claim 1, wherein the mineral annealing roll exhaust means 900 is a cylinder 910 in which dust and particles are polished on the surface of the mineral annealing roll 300, and two or more nozzles provided on the lower surface of the cylinder 911, an exhaust pipe 920 connecting the nozzles 911, an exhaust fan 930 provided to suck dust and particles polished through the exhaust pipe 920, and an exhaust fan 930 Mineral annealing roll online dressing device, characterized in that consisting of an exhaust port (931) provided to discharge the dust and particles collected by the outside.

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