JPS6277104A - Hot rolling mill - Google Patents

Abstract

PURPOSE:To make the characteristic of a stock uniform by providing a temp. controller and heater to a rolling roll and controlling the temp. thereof. CONSTITUTION:A thermocouple 4 for measuring the temp. of the rolling roll 1 and the heater 3 for heating the roll are disposed in the roll 1. The roll is driven by a spindle 8 connected to a driving device to roll the stock 2. The temp. of the roll 1 is measured by the thermocouple 4 during as well as before and after rolling. The roll 1 is heated by the roll heater of the heater 3 if the temp. of the roll 1 is lower than the temp. of the stock 2. The roll 1 is cooled by a cooler of water, etc., if the temp. of the roll 1 is lower than the temp. of the stock 2. The temp. of the roll can be controlled to the specified temp. by the above-mentioned method. The rolling at the equal temp. of the roll 1 and the stock 1 is thus made possible and therefore, the characteristics of the stock 2 are made uniform from the surface to the inside.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hot rolling mill for hot rolling materials such as metals.

[Conventional technology]

Generally, as shown in FIG.
1, it is rolled into a predetermined shape.

Conventionally, this rolling roll /I/1 was sometimes cooled with water or the like, but there was no need to constantly measure the temperature of the rolling roll to heat the rolling roll.

However, because the temperature of the material and the temperature of the rolling rolls are different, the surface properties of the material after rolling are different from the internal properties5.
For example, this has been a problem with metals such as nickel/I/ alloys.

[Problem that the invention seeks to solve]

The present invention was proposed in view of the above-mentioned conventional drawbacks, and
By rolling the material by matching the temperature of the aE rolling roll and the temperature of the material, homogeneous material properties can be obtained. The purpose is to provide a hot rolling mill.

[Means for solving problems]

In order to solve the above problems, the present invention provides a hot rolling mill with a temperature measuring device for measuring the temperature of the rolling rolls and a heating device for heating the rolling rolls.

It is characterized by being able to control the temperature of the rolling rolls.

[Effect]

Since the hot rolling mill of the present invention is grooved as described above, it is possible to roll the material by making the temperature of the rolling rolls match the temperature of the material, resulting in a material with uniform properties from the surface to the inside of the material.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on embodiments shown in the drawings.

FIG. 1 is an explanatory diagram of a hot rolling mill according to one embodiment of the present invention. In the figure, a rolling row Az 1, which is disposed in a housing and whose both ends are journalled by bearings 6, is driven by a spindle 8 connected to a drive device (not shown), and rolls a raw material 2.
Roll.

Inside the rolling loaf L/1, a thermocouple 4 for measuring the temperature of the rolling roll and a heater 3 for heating the rolling roll 1 are provided. The electric signal from the thermocouple 4 and the power from the heater 3 are connected to the outside via a rotary joint 5.

The temperature of the rolling roll is measured by a temperature measuring device including a thermocouple 4 during and before and after rolling of the material 2, and if the temperature is lower than the temperature of the material 2, the rolling roll /I/1 is heated by the roll heating device of the heater 3. If the temperature of the pE rolling roll/I/1 becomes higher than the temperature of the material 2, the rolling roll 1 is cooled by a conventionally used cooling device such as water. Through this series of cycles, the temperature of the rolling roll 1 can be controlled to be constant.

Note that in this embodiment, the roll temperature measuring device and the roll heating device were arranged inside the rolling roll 1.

For example, it is possible to measure the temperature of the roll from outside the roll using a contact or non-contact thermometer, or to heat the roll from outside the roll, and these various methods can also be combined. good.

Furthermore, in this embodiment, a 2-Hi mill was used.

The same applies to rolling mills with bank up rolls such as 4-Hi and 6-Hi, and can also be applied to mills with various grooved and irregularly shaped rolls.

〔Effect of the invention〕

As specifically explained above, according to the present invention, it is possible to roll the material by making the temperature of the rolling rolls match the temperature of the material, so that uniform properties can be obtained from the surface to the inside of the material.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a hot rolling mill according to an embodiment of the present invention,
FIG. 2 is a side view of a conventional hot-open rolling machine. 1°...rolling roll, 2...material, 3...heater,
4...Thermocouple, 5...Rotary joint, 6...Bearing, 7
Housing, 8...Spindle Figure 1 Figure 2

Claims (1)

[Claims] In a hot rolling mill that hot-rolls materials such as metals,
1. A hot rolling mill characterized in that the temperature of the rolling rolls can be controlled by providing a temperature measuring device for measuring the temperature of the rolling rolls and a heating device for heating the rolling rolls.