CN218532345U

CN218532345U - Device for regulating and controlling strength and toughness of metal material with large length-diameter ratio

Info

Publication number: CN218532345U
Application number: CN202222916756.3U
Authority: CN
Inventors: 孙院军; 姚显成; 李金阳; 丁向东; 周奥; 孙军
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-02-28
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a device for regulating and controlling the toughness of a metal material with a large length-diameter ratio, which comprises a wire feeding wheel, a wire drawing die and a drawing and twisting device which are arranged from left to right in sequence; the drawing and twisting device comprises a rotary drum and a wire drawing wheel fixedly arranged on the surface of the rotary drum through a support, the axis of the wire drawing wheel is vertical to that of the rotary drum, and metal rod wires are drawn sequentially through a wire feeding wheel, a wire drawing die and the wire drawing wheel and are twisted by torsion generated when the rotary drum rotates. The utility model discloses a draw torsion device and realized that the stick rod silk material is drawn-is twistd reverse serialization processing, has improved metal material's strong toughness, and operation process is simple, and production efficiency is high.

Description

Device for regulating and controlling strength and toughness of metal material with large length-diameter ratio

Technical Field

The utility model relates to a metal material strengthening technology, in particular to a device for regulating and controlling the toughness of a metal material with a large length-diameter ratio.

Background

Since the twentieth century, the standard requirements for materials have increased as the level of social productivity has increased. The golden exhibition material is widely applied to various fields of military use and civil use due to good comprehensive mechanical properties, and is an indispensable material for human society. The metal rod wire is the largest in the used section bar, relates to the product type in the largest field, and has obvious influence on national economy due to the production technology level. The mechanical property is one of the key indexes of the performance of the metal rod and wire, and is also a basic index for determining the quality of both a supplier and a supplier, thereby being a key performance parameter for production control of enterprises. The mechanical properties of the rod and wire with large length-diameter ratio are closely related to the material and the processing technology. Under the same conditions of the same material, the influence of different processing methods, procedures and parameters on the material performance is very obvious. Even in the same processing method, process and parameters, there is a possibility that a certain process parameter changes or drifts, resulting in a difference in material properties. After the traditional metal material is processed, the performance of the traditional metal material is basically determined, and under the condition of not changing the specification and the shape, the heat treatment is a few treatment methods, but the regulation and control of the performance of the traditional metal material are very limited. For this reason, the material waste caused each year is very large because of the performance failure. In addition, due to the conventional processing of the material with large length-diameter ratio, no matter extrusion, rolling, drawing and the like, an axial fiber structure is basically formed, and the anisotropy of the material is serious because the fiber orientation is single. The Sun Yuan army of the university of west-ann traffic provides a method for non-deformation processing and regulation of metal pipe, rod and wire materials and mechanical properties, and research results show that: through twisting the metal rod wire with large length-diameter ratio, the obdurability of the material can be obviously regulated and controlled under the condition of not changing the outer diameter of the section.

The drawing material processing technology can cause the metal to be remarkably hardened, so that the metal needs to be drawn for many times, the metal material forms a fiber structure along the axial direction through the pressure processing for many times, the axial performance of the material is remarkably improved due to the existence of the fiber structure, the radial performance of the material is seriously weakened, and strong anisotropy is formed. The existence of anisotropy directly influences the strength performance of the metal material and restricts the use of the material. It can be seen that the core of regulating the anisotropy of the rod and wire material is regulating the direction of the extrusion/rolling/drawing organization of the material. A large number of researches show that the fiber tissue orientation of the material can be changed by utilizing torsional deformation, the anisotropy of the material is obviously reduced, and the micron grain size of the metal is uniformly refined to be nanoscale, so that the strength of the material is obviously improved. For example, the method for eliminating anisotropy of a metal pipe processed by pressure, which is invented by the university of Xian transportation Sun Yuanjun, sun Boyu and the like, realizes the modification of the pipe by carrying out torsional processing on the pipe at high temperature and normal temperature. The team also invents a method for regulating and controlling the toughness of the metal wire rod by non-deformation processing, the metal wire rod or the metal rod is bent and straightened at normal temperature or high temperature, the grain orientation and the grain size of the metal are changed by controlling the bending curvature, the number of turns and the times, and the toughness of the metal wire rod or the metal rod is also changed by regulating and controlling the twisting processing.

For the above reasons, it is highly desirable to provide an apparatus or method capable of simultaneously performing continuous drawing and twisting processes, thereby improving the toughness of the metal material.

Disclosure of Invention

An object of the utility model is to provide a device of the tough performance of big length-diameter ratio metal material of regulation and control can realize that the excellent pole silk material is drawn-is twistd reverse serialization processing, has improved metal material's tough performance.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a device for regulating and controlling the obdurability of a metal material with a large length-diameter ratio comprises a raw material disc, a wire feeding wheel, a wire drawing die and a drawing and twisting device which are sequentially arranged from left to right;

the drawing and twisting device comprises a rotary drum and a wire drawing wheel fixedly arranged on the surface of the rotary drum through a support, the axis of the wire drawing wheel is vertical to that of the rotary drum, and metal rod wires wound on the raw material disc are drawn sequentially through a wire feeding wheel, a wire drawing die and the wire drawing wheel and are twisted by torque force generated when the rotary drum rotates.

Furthermore, the wire drawing device also comprises a wire pressing ring positioned between the wire drawing die and the rotary drum, and the wire pressing ring and the rotary drum are coaxially arranged.

Furthermore, the rotating drum is driven by a driving motor, and the driving motor is a speed regulating motor.

Furthermore, a wire collecting disc for collecting the twisted metal rod wires is fixedly arranged on the surface of the rotary drum through a support.

The utility model discloses following beneficial effect has:

the wire drawing wheel is fixed on the surface of the rotary drum through the bracket, and when the wire drawing wheel rotates around the axis of the wire drawing wheel, the wire drawing wheel draws the metal rod wire to form a fiber tissue along the axis direction; and secondly, when the rotary drum rotates, the wire drawing wheel fixedly connected with the rotary drum rotates along with the rotary drum so as to generate torsion, and the metal rod wire in the drawing process is twisted so as to change the fiber tissue orientation of the metal rod wire. It can be seen that the utility model discloses with the online drawing and the processing of twisting reverse of metal rod silk material in coordination, realized drawing-twisting continuous processing of rod silk material, make the anisotropy of big length to diameter ratio rod silk metal material show and reduce, strengthened metal material's obdurability.

The wire pressing ring is arranged between the wire drawing die and the rotary drum, so that the metal rod wire with the reduced diameter after passing through the wire drawing die firstly passes through the wire pressing ring, and the phenomenon that the device generates large vibration in the drawing and twisting process to influence the drawing and twisting effect is effectively avoided.

The rotating drum is driven by the speed regulating motor, the rotating speed and the rotating direction of the rotating drum can be adjusted according to the anisotropic condition of the metal rod wire with different large length-diameter ratios and the characteristics of the processing procedure, so that the torsion angle, the torsion direction and the rotating period of the metal rod wire are controlled, the orientation of the fiber tissue of the rod wire with the large length-diameter ratio is reasonably changed, the anisotropy of the drawn material is regulated, the grain size of metal is refined, and finally the toughness of the material is changed by regulating the internal texture of the metal material.

The wire collecting disc can be used for collecting twisted metal rod wires, and is more convenient to process and operate.

Drawings

FIG. 1: the utility model has the overall structure schematic diagram;

FIG. 2: fig. 1 is a side view of a dotted frame portion of the present invention;

in the figure: 1. a raw material disc; 2. a wire feeding wheel; 3. drawing a wire die; 4. pressing a wire ring; 5. a wire drawing wheel; 6. a silk reeling disc; 7. metal rod and wire materials; 8. a rotating drum.

Detailed Description

The following examples are provided to explain the present invention in detail, but not to limit the present invention.

As shown in fig. 1 and fig. 2, a device for regulating and controlling the toughness of a metal material with a large length-diameter ratio comprises a raw material disc 1, a wire feeding wheel 2, a wire drawing die 3, a wire pressing ring 4 and a drawing and twisting device which are sequentially arranged from left to right, wherein the drawing and twisting device comprises a rotary drum 8, a wire drawing wheel 5 and a wire collecting disc 6 which are fixedly arranged on the surface of the rotary drum through a support, the wire collecting disc 6 is positioned on the right side of the wire drawing wheel 5, the axis of the wire drawing wheel 5 is vertical to the axis of the rotary drum 8, the wire pressing ring 4 and the rotary drum 8 are coaxially arranged, and the wire pressing ring 4 can avoid large vibration of the device in the drawing and twisting process;

the diameter of a metal rod wire 7 in the stock tray 1 is reduced after the metal rod wire 7 is conveyed to a wire drawing die 3 by a wire feeding wheel 2, and the metal rod wire is drawn by traction force generated when a wire drawing wheel 5 rotates, meanwhile, the rotation of a rotary drum 8 can drive the wire drawing wheel 5 to rotate around the axial direction of the rotary drum 8 to generate torsion on the metal rod wire 7, so that the metal rod wire 7 in the drawing process is twisted, the orientation of a fiber tissue formed in the drawing process of the metal rod wire 7 along the axial direction is changed, the anisotropy of the drawn material is regulated, the grain size of metal is refined, and finally the toughness of the material is changed by regulating the internal texture of the metal material.

Preferably, the driving motor of the rotating drum 8 is a speed regulating motor, and the rotating speed and the rotating direction of the rotating drum can be adjusted according to the anisotropic conditions of the metal rods and wires with different large length-diameter ratios and the characteristics of the processing procedures, so that the twisting angle, the twisting direction and the rotating period of the metal rods and wires are controlled, and the orientation of the fiber tissue of the rods and wires with large length-diameter ratios is reasonably changed.

The utility model discloses a theory of operation as follows:

the method comprises the steps of conveying metal rod wires 7 in a raw material disc 1 to a wire drawing die 3 through a wire feeding wheel 2 to enable the diameters of the metal rod wires 7 to be reduced, enabling a rotary drum 8 to rotate to drive a wire drawing wheel 5 to rotate synchronously, enabling the metal rod wires 7 with the reduced diameters to pass through a wire pressing ring 4, drawing along the axis direction along with the rotation of the wire drawing wheel 5, enabling the fiber tissues to change in orientation through torsion generated when the rotary drum 8 rotates, and finally being contained in a wire collecting disc 6, so that multi-pass drawing and twisting processing of the metal rod wires 7 is achieved.

Claims

1. A device for regulating and controlling the toughness of a metal material with a large length-diameter ratio is characterized by comprising a raw material disc (1), a wire feeding wheel (2), a wire drawing die (3) and a drawing and twisting device which are sequentially arranged from left to right;

the drawing and twisting device comprises a rotary drum (8) and a wire drawing wheel (5) fixedly arranged on the surface of the rotary drum through a support, the axis of the wire drawing wheel (5) is vertical to the axis of the rotary drum (8), and metal rod wires (7) wound on a raw material disc (1) sequentially pass through a wire feeding wheel (2), a wire drawing die (3) and the wire drawing wheel (5) to be drawn and twisted by torsion generated when the rotary drum (8) rotates.

2. The device for regulating and controlling the toughness of the metal material with the large length-diameter ratio according to the claim 1, characterized by further comprising a wire pressing ring (4) positioned between the wire drawing die (3) and the rotary drum (8), wherein the wire pressing ring (4) and the rotary drum (8) are coaxially arranged.

3. The device for regulating and controlling the toughness of the metal material with the large length-diameter ratio according to claim 2, wherein the rotary drum (8) is driven by a driving motor, and the driving motor is a speed regulating motor.

4. The device for regulating and controlling the toughness of the metal material with the large length-diameter ratio according to any one of claims 1 to 3, wherein a wire collecting disc (6) for collecting the metal rod wire material (7) after drawing and twisting is fixedly arranged on the surface of the rotary drum (8) through a support.