A kind of equal channel angle extrusion and reciprocating extrusion-twist composite forming device and method
A technology of equal channel turning and compound forming, applied in the field of extrusion processing, can solve problems such as small plastic deformation, and achieve the effects of low cost, enhanced continuity and high production efficiency
Active Publication Date: 2018-06-19
HARBIN UNIV OF SCI & TECH
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the limitations of these processes are also obvious. For example, the amount of plastic deformation obtained by each processing is small, and multiple processing is required to obtain a larger amount of plastic deformation.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Furthermore, it should be understood that development work, while potentially complex and time-consuming, would be a routine undertaking for those skilled in the art having the benefit of this disclosure.
[0031] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution ac...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an equal-channel corner extruding channel and reciprocating type extruding-twisting combined forming device and method, belonging to the technical field of extrusion processing, and aiming to solve the problems of complex procedures and high preparation cost of an existing large plastic deformation method for preparing ultra-fine grains. The device is technically characterized in that two equal-channel corner extruding channels and a extruding-twisting channel form a U-shaped extruding channel; the cross section of each part of the U-shaped extruding channel is a square, and has a constant cross sectional area; the cross section of the extruding-twisting channel twists by 90 degrees along an extruding direction. The method comprises the following forming steps: putting the device and a blank on a press machine, heating the device and the blank to a specified temperature, keeping the temperature constant, descending a punch, performing equal-channel corner extruding, extruding-twisting and equal-channel corner extruding on the blank in sequence, taking out the punch after the limit of a punch stroke is reached, and performing the above extruding steps on the other side, wherein all the steps are performed in a reciprocating way to finally shape a needed ultra-fine grain material. The equal-channel corner extruding channel and reciprocating type extruding-twisting combined forming device and method are used in material plastic forming.
Description
technical field [0001] The invention relates to a compound large plastic deformation forming device and method, in particular to a compound forming device and method of equal channel angular extrusion and reciprocating extrusion and twisting, belonging to the technical field of extrusion processing. Background technique [0002] With the rapid development of aerospace technology, military equipment and vehicles in today's world, the demand for high-performance metal materials, especially high-specific-strength materials, is increasing. The preparation of materials with high specific strength and good plasticity has been It is a hot spot in the research of materials science and materials engineering in various countries, and it is also one of the most competitive fields in the field of international materials. According to the current research status of various countries, alloying strengthening, deformation strengthening, fine grain strengthening and solid solution-precipitati...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B21C25/02B21C23/00
CPCB21C23/001B21C23/002B21C25/02
Inventor 于彦东李磊
Owner HARBIN UNIV OF SCI & TECH