Taiyuan University of Technology

Jianchao Han

Tao Wang

Zhongkai Ren

Yuanming Liu

Qingxue Huang

Yi Jia

Dongping He

Wei Zhang

Shuaishuai Zhang

Junxin Wei

Yizhi Zhang

Xiao Liu

Peng Chen

Zhenhua Wang

Hui Niu

Jingwei Zhao

Linan Ma

Zhiqiang Li

Miao Guo

Litao Gou

Pingju Hao

He Li

Zhenhao Yuan

Ran Li

Gang Dai

Xinxin Liu

Xinlong Zhang

Yanjun Wang

Shuzhi Zhang

Changjiang Zhang

Yue Wu

Sha Li

Changjiang Wang

A pulse current-assisted roll bonding method for a magnesium/titanium composite plate with a large thickness ratio is provided. The specific steps are as follows: 1, pre-treating a slab; 2, applying a pulse current; 3, rolling and bonding; and 4, post-treating the slab. The magnesium/titanium composite plate with the large thickness ratio is obtained.

Pulse current-assisted roll bonding method for magnesium/titanium composite plate with large thickness ratio

A method for differential temperature rolling of composite strips based on actions of a friction roller includes steps of: S: preparing a metal strip to be bonded, and performing surface treatment on the metal strip to be bonded; S: frictionally heating the metal strip to be bonded by several sets of friction roller heating devices; measuring a surface temperature of the friction-heated metal strip to be bonded strip by a temperature detector; according to a measured temperature, adjusting a rotation speed of the friction roller in the friction roller heating devices; and S: transporting the heated metal strip to be bonded to a rolling mill for rolling to obtain a metal composite strip. The invention adopts the friction roller heating devices in rolling process of the metal strip to be bonded.

Method for differential temperature rolling of composite strips based on actions of friction roller and device thereof

Provided is an efficient preparation method of a bimetallic seamless composite pipe, and belongs to the technical field of steel pipe manufacture. The efficient preparation method of the bimetallic seamless composite pipe includes following steps: sheathing a base pipe blank on a cladding pipe blank to obtain a composite pipe blank, and carrying out a stress relief annealing treatment on the composite pipe blank, where the base pipe blank and the cladding pipe blank are made of different materials; heating the composite pipe blank after the stress relief annealing treatment to a hot working window temperature, and sheathing on a core rod of an extrusion cylinder after an insulation treatment, and then extruding along an axial direction of the extrusion cylinder to obtain a bimetallic seamless composite pipe.

Efficient preparation method of bimetallic seamless composite pipe

A magnesium/titanium composite plate with large thickness ratios and a gradient heterothermal rolling bonding method are provided by the present disclosure, relating to the technical field of rolling bonding plates. The method includes following steps: assembling blanks according to a sequence of titanium strip, transition layer foil and magnesium alloy plate to obtain a composite blank; carrying out induction heating treatment on one side of the titanium strip of the composite blank, then rolling, and carrying out heat treatment on a composite plate blank after rolling to obtain the magnesium/titanium composite plate with large thickness ratios; and a thickness ratio of the magnesium alloy plate to the titanium strip is greater than or equal to 20:1.

Magnesium/titanium composite plate with large thickness ratios and gradient heterothermal rolling bonding method

A method for setting a roll gap of sinusoidal corrugated rolling for a metal composite plate includes steps of: determining entrance thicknesses, exit thicknesses, a width, and a rolling temperature of a difficult-to-deform metal slab and an easy-to-deform metal slab; detecting a roll speed and an entrance speed of a metal composite slab, obtaining a roll radius and friction factors; determining parameters of a sinusoidal corrugating roll and a quantity of complete sinusoidal corrugations on the sinusoidal corrugating roll; then calculating a time required for a complete corrugated rolling; calculating a rolling force at any time during the sinusoidal corrugated rolling of the metal composite plate; and calculating the roll gap S of the corrugated rolling at any time according to the rolling force F, and configuring a rolling mill to have the roll gap S according to an actual rolling schedule before normal production.

Method for setting roll gap of sinusoidal corrugated rolling for metal composite plate

The present disclosure provides a pulse current assisted uncanned rolling method for titanium-TiAl composite plates, including the following specific steps: 1. preparing titanium alloy sheets; 2. preparing TiAl alloy sheets; 3. uncanned lay-up; 4. pulse current assisted hot-rolling; 5. separation and subsequent processing, thus getting the titanium-TiAl composite plates. The composite plates are of good quality on the surface without oxide layer shedding, no cracks at the edges and the ends, with uniform and fine microstructures, good bonding interface and excellent mechanical properties.

Pulse current assisted uncanned rolling method for titanium-TiAl composite plates

An asynchronous rolling mill with a super large diameter ratio comprises a rolling mill stand, a press-down device, a balancing device, an upper roll system, and an arc-shaped plate device. The arc-shaped plate device comprises an arc-shaped plate, the arc-shaped plate is arranged opposite to the upper roll, and the arc-shaped plate and the upper roll are cooperated to roll strips. The present disclosure also provides a method for rolling a strip using an asynchronous rolling mill with a super large diameter ratio. The asynchronous rolling mill can roll with super large diameter ratio and different speeds, and has a large angle to engage, thereby reducing the external friction force of a workpiece and improving strip forming quality.

Asynchronous rolling mill with a super large diameter ratio and sheet rolling method

A transverse vibration rolling system and a preparation method for a double-layer metal composite ultra-thin strip relate to a technical field of rolling, which solve problems including poor rolling and bonding effects, low geometric accuracy, and poor plate shape quality of metal composite ultra-thin strips. The transverse vibration rolling system includes: a first roll, a second roll, a first hydraulic vibrator, a second hydraulic vibrator, a first hydraulic motor, a second hydraulic motor, a check valve, a first hydraulic pump, a first overflow valve, an oil tank, a controller, a second overflow valve, a second hydraulic pump, an electromagnetic reversing valve, a first speed control valve, and a second speed control valve. The transverse vibration of the rolls of the present invention can apply transverse shearing force on the ultra-thin metal strips during the bond rolling.

Transverse vibration rolling system and preparation method for double-layer metal composite ultra-thin strip

A single-side tower-type roller system based asynchronous rolling mill for rolling an ultra-thin composite strip and a hydraulic system therefor are provided. The mill includes a machine frame and reel assemblies. An upper roller system assembly and a lower roller system assembly are arranged in the machine frame. A down-pressing assembly is arranged on the machine frame and used to adjust a roll gap between the upper roller system assembly and the lower roller system assembly. A support roller balance assembly is arranged on the machine frame and used to support and balance the upper roller system assembly. The lower roller system assembly includes right and left working rollers. The right working roller is a plain roller. The left working roller is a patterned roller. A left-pressing assembly is arranged on the machine frame and used to adjust a roll gap between the right and left working rollers.

Single-sided tower-type roller system based asynchronous rolling mill for rolling ultra-thin composite strip and hydraulic system

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Taiyuan, China

Jianchao Han