JPS5940435Y2 - Threading guide - Google Patents

Description

[Detailed description of the invention] The present invention relates to a guide for threading a plate from inside the furnace to a plating pot when the plate is threaded (hereinafter referred to as threading) at the start of operation in a continuous plating facility equipped with a heat treatment furnace.

Conventionally, in a continuous plating equipment having a heat treatment furnace, the threading method from the heat treatment furnace to the plating pot 1 will be explained with reference to FIG. After connecting the rear end of the chain to the tip of the strip 7, the chain is passed through a heat treatment furnace, and the threading bar 5 is pulled out from a gate valve 8 installed on the exit side of the heat treatment furnace, and the tip of the chain 6 and the threading bar are connected to each other. 5 is cut off and connected to a separately prepared chain 10 with a weight 9 attached to its tip.

This newly connected carcass is also fed with a chain 9 from the gate valve 8, passed through the snout 11, and then dropped into the plating pot 12.

However, recently, as shown in Figure 4, a priddle device has been used on the exit side of the heat treatment furnace to separate the strip tension in the furnace from the strip tension in the pot, which makes the conventional method extremely time consuming. The required work was complicated.

For this reason, there is a method of providing a gate valve as shown in FIG. 4, but although the work time is somewhat reduced, the complexity of workability has not been solved.

Furthermore, work in high-temperature atmospheres, such as opening and closing valves, increased, resulting in poor work efficiency and poor safety.

Another problem is that fireproof and insulating bricks are commonly used as refractories for heat treatment furnaces, taking into consideration the responsiveness of the furnace when changing the thread gauge and energy conservation, but they have less spall resistance than firebricks. The ceiling arch bricks were partially missing and often fell off.

The fallen bricks ride on the strip and are carried to the exit side of the heat treatment furnace, then pass through the snout 11 and pass through the molten metal 13.
Fall inside.

In the case of fireproof insulation bricks, the specific gravity is lower than that of the molten metal 13, so they easily float in the molten metal and come into contact with the strip surface, causing scratches and reducing the value of the plated product.

Furthermore, if the flaws are large, the line has to be stopped for a long period of time and the bricks must be removed.

The present invention solves the above problems, namely: 1) It is possible to smoothly pass the chain from the gate pulp 8 between the priddle rolls la and Ib.

2) Refractories that fall onto the strip during operation are easily removed without falling into the metal.

The purpose is to provide a guide that will help you.

An embodiment of the present invention will be described below with reference to FIGS. 5, 6, and 7.

A guide plate 15 is attached to the main shaft 14, and the main shaft 14 has a bearing 16a attached to the furnace equipment.
16b, a gear 17 is provided on the outside of either one of the bearings 16a, 16b, a pinion gear 18 for driving the gear, a drive shaft 19, and a rotation handle 20 are attached to one end of the drive shaft 19. Therefore, the angle of the guide plate 150 can be easily changed by rotating the nozzle 20 from outside the furnace, and since the handle 20 has a stopper 21, it is also easy to fix the angle.

Further, the center position of the main shaft 14 is preferably located close to the surface of the lower roll on the center line of the two upper and lower priddle rolls 1a and lb.

Next, the sealing means between the inside of the furnace and the outside air, which is provided in the bearing portion of the main shaft 14, will be explained.

Bearing, 16a, 16b, gear 17, binion 18
is pressed by the sill box 3 to maintain the internal pressure of the inert gas at a constant pressure.

According to this configuration, the seal of the rotating main shaft 14 becomes outside air - packing - inert gas - packing - inside the furnace, and the inert gas section is interposed between the outside air and the furnace. Compared to this configuration, the sealing performance is much improved and it is possible to almost completely prevent outside air from entering the furnace.

With the above configuration, when threading before starting operation, the guide plate 15 is set at the position shown by the solid line in FIG. It can easily slide into the molten metal 13.

Also, during normal operation, if the guide plate 15 is set at the position shown by the two-dot chain line in Figure 7, the bricks that fall onto the strip and are carried will fall onto the guide plate and slide down near the manhole 21, falling into the molten metal. Stable operation is possible without any problems.

Furthermore, by installing a seal box filled with inert gas in the bearing part, it is possible to reliably seal the outside air and the inside of the furnace, and by installing the threading guide, no problems such as deterioration of sealing performance will occur. .

By installing the threading guide in this way,
Threading of the hot pry dole roll can now be done safely and easily, and even if a ceiling brick falls off, it will no longer fall into the molten metal, eliminating line stoppages due to brick removal and enabling stable operation. became.

[Brief explanation of drawings]

Figure 1 is a layout diagram of a general hot-dip plating equipment, Figure 2 is an explanatory diagram showing a threading bar, chain chain, and strip connected together, Figure 3 is a diagram showing a chain connected to a button guard, and Figure 4 is an illustration showing a chain connected to a button guard. Layout diagram of hot-dip plating equipment equipped with hot plydle equipment; Figure 5 is a plan view showing the structure of the apparatus of the present invention; Figure 6 is a side view showing the structure of the apparatus of the present invention; Figure 7 is the apparatus of the present invention. An explanatory diagram for using the . 1a, lb...Pride roll, 3...Silver box, 5...° threading bar, 6...Chain chain, 7...Strip, 8...Gate pulp,
9... Button, 10... Chain chain, 11... Snout, 12... Plating pot, 13... Molten metal,
14... Main shaft, 15... Guide plate, 16a, 16b... Bearing, 17... Gear, 18
...Pinion gear-119...Drive shaft, 20
...Ndol, 21...Stopper.

Claims (1)

[Claims for Utility Model Registration] ■ A heat treatment furnace having a pridle device, a guide plate having a variable inclination and angle between the pridle rolls 1a and lb, and an operating device for the guide plate located outside the heat treatment furnace. A threading guide characterized by having been installed. 2. The threading guide according to claim 1, wherein the operating device is a handle. 3. The threading guide according to claim 1 or 2, which is provided with a seal box 3 filled with inert gas on the outside of the guide plate bearing part.