Metal plate strip composite hot rolling equipment

Abstract

The utility model discloses metal plate strip composite hot rolling equipment which comprises a winding machine, an unwinding machine, a deviation rectifying and overlapping mechanism, a rolling mill and a control panel, the deviation rectifying and overlapping mechanism is used for rectifying and overlapping a plate strip, the winding machine and the unwinding machine are respectively positioned in front of and behind the rolling mill, and the deviation rectifying and overlapping mechanism is positioned between the winding machine and the rolling mill. Tension is established for the metal plate strip through the winding machine and the unwinding machine, a roller of the rolling mill is in contact with a low-potential contact, the low-potential contact is matched with a high-potential contact, the high-potential contact is located behind the deviation rectifying and overlapping mechanism, the high-potential contact is in contact with the substrate strip, and the low-potential contact and the high-potential contact are connected with a heating power source. And the winding machine, the unwinding machine, the rolling mill and the heating power supply are connected with the control panel. Compared with the prior art, the device is simple in structure, low in cost, good in heating efficiency and capable of achieving continuous hot rolling compounding.

Description

Technical Field

[0001] This utility model relates to the field of metal processing, specifically to hot rolling equipment for metal sheet and strip composites. Background Technology

[0002] Metal composite sheets and strips are multilayer materials formed by the interfacial metallurgical bonding of two or more different metals through special processes (such as explosive bonding, rolling bonding, etc.). Their core characteristic is that while retaining the advantages of a single metal, they compensate for its performance shortcomings. For example, the base metal provides mechanical strength, while the cladding metal enhances corrosion resistance, thereby reducing the cost of using precious metals. Currently, hot rolling bonding uses heating furnaces (such as gas furnaces or resistance furnaces) to heat the metal sheets and strips. This method makes high-speed continuous rolling difficult, limiting production efficiency. Furthermore, achieving better heating and production efficiency requires dedicated large-scale heating equipment, resulting in high investment and maintenance costs. Utility Model Content

[0003] The purpose of this invention is to overcome the problems of heating efficiency and cost in existing hot rolling composite metal sheet and strip, and to provide a metal sheet and strip composite hot rolling equipment with a simplified structure, better heating efficiency, and the ability to achieve continuous hot rolling composite.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a metal sheet and strip composite hot rolling equipment, including a coiler, an uncoiler, a correction and stacking mechanism for correcting and stacking the sheet and strip, a rolling mill, and a control panel. The coiler and uncoiler are located in front of and behind the rolling mill, respectively. The correction and stacking mechanism is located between the coiler and the rolling mill. The metal sheet and strip establish tension through the coiler and uncoiler. The rolling mill rolls are in contact with a low-potential contact. The low-potential contact is matched with a high-potential contact. The high-potential contact is located behind the correction and stacking mechanism and is in contact with the base sheet and strip. The low-potential contact and the high-potential contact are connected to a heating power supply. The coiler, uncoiler, rolling mill, and heating power supply are connected to the control panel.

[0005] Optionally, the correction and overlapping mechanism consists of a guide roller and an overlapping table. The overlapping table is provided with an overlapping component and a correction component. The guide roller guides the plate to the overlapping table, and the overlapping component and the correction component correct the overlapping plate.

[0006] Optionally, the heating power supply has a supply voltage of 20~25V and a supply current of 10~12.5KA.

[0007] The method of using this utility model is as follows: Two or more metal coils are placed on an uncoiling machine, from which metal strips are drawn out. The metal strips pass through a correction and overlapping mechanism, and then the corrected and overlapped metal strips are drawn to the rolls of the rolling mill, making them contact the rolls. Then, the heating power is turned on using the control panel, and the metal strips are energized through the low-potential and high-potential contacts. The control panel starts the rolling mill, and the rolling mill rolls the traction strips, drawing the rolled composite strips to the rewinding machine for connection. The control panel controls the speed of the uncoiling and rewinding machines to establish tension for the metal strips, realizing continuous hot rolling composite of the metal strips.

[0008] The principle of this invention is as follows: Metal strips are heated using high and low potential contacts. Since the strip moves continuously forward, the substrate strip near the high potential is preheated. After preheating, the substrate strip moves forward and passes through a correction and stacking mechanism to overlap with other strips, forming a pre-rolled strip. At this point, the resistance increases, the electron density increases, and the temperature of the pre-rolled strip further rises. The pre-rolled strip continues to move forward and contacts the rolls, where the resistance and electron density further increase, and the temperature rises to a suitable value. It is then rolled into a composite strip. This heating method results in a relatively gradual temperature rise and minimal heat loss, achieving good heating efficiency. Furthermore, it does not require sophisticated equipment. Using low-voltage, high-current heating of the composite material effectively improves heating efficiency, optimizes material properties, reduces costs, reduces arc radiation, and enhances safety. Operation is also simple.

[0009] Compared with the prior art, the present invention has at least the following advantages: the present invention has a simple structure, low cost, good heating efficiency, and can realize continuous hot rolling composite. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] The components in the attached diagram are labeled as follows: 1. Winding machine; 2. Unwinding machine; 3. Straightening and overlapping mechanism; 4. Rolling mill; 5. Low-potential contact; 6. High-potential contact. Detailed Implementation

[0012] Example 1, in conjunction with the following Figure 1Further description of this utility model: A composite hot rolling equipment for metal sheet and strip includes a coiler 1, an uncoiler 2, a correction and stacking mechanism 3 for correcting and stacking the sheet and strip, a rolling mill 4, and a control panel. The uncoiler can hold multiple metal coils at intervals. The coiler and uncoiler are located in front of and behind the rolling mill, respectively. The correction and stacking mechanism is located between the coiler and the rolling mill. The metal sheet and strip establish tension through the coiler and uncoiler. The rolling mill rolls contact a low-potential contact 5, which is matched with a high-potential contact 6. The high-potential contact is located behind the correction and stacking mechanism and slides in contact with the base sheet and strip. The low-potential contact and the high-potential contact are connected to a heating power supply. The heating power supply has a built-in on / off switch. The power supply voltage is 20~25V, and the power supply current is 10~12.5KA. The coiler, uncoiler, rolling mill, and heating power supply are connected to the control panel, which controls their status.

[0013] There are many forms of belt alignment and overlapping mechanisms. To facilitate understanding of the alignment and overlapping mechanism, one form is described. The alignment and overlapping mechanism consists of guide rollers and overlapping table. The overlapping table is equipped with overlapping components and alignment components. The guide rollers guide the belt to the overlapping table, and the overlapping components and alignment components align and overlap the belt.

[0014] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hot rolling mill for metal sheet and strip, comprising a coiler (1), an uncoiler (2), a correction and stacking mechanism (3) for correcting and stacking the sheet and strip, a rolling mill (4), and a control panel, wherein the coiler and uncoiler are located in front of and behind the rolling mill, respectively, and the correction and stacking mechanism is located between the coiler and the rolling mill, and the metal sheet and strip establish tension through the coiler and uncoiler, characterized in that: The mill rolls are in contact with a low-potential contact (5), the low-potential contact is matched with a high-potential contact (6), the high-potential contact is located behind the correction and stacking mechanism, the high-potential contact is in contact with the substrate strip, the low-potential contact and the high-potential contact are connected to a heating power supply, and the winding machine, unwinding machine, mill and heating power supply are connected to the control panel.

2. The metal sheet and strip composite hot rolling equipment according to claim 1, characterized in that: The correction and overlapping mechanism consists of guide rollers and overlapping table. The overlapping table is equipped with overlapping components and correction components. The guide rollers guide the plate to the overlapping table, and the overlapping components and correction components correct the overlapping plate.

3. The metal sheet and strip composite hot rolling equipment according to claim 1, characterized in that: The heating power supply voltage is 20~25V and the power supply current is 10~12.5KA.

Images