Industrialization of Aluminum Alloy Uniform Solidification Controlled Rheological Die Casting

2022 ◽  
Vol 327 ◽  
pp. 163-171
Author(s):  
Ming Fan Qi ◽  
Yong Lin Kang ◽  
Yuan Hao Zheng ◽  
Ji Cheng Wang ◽  
Gu Nan Li ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Large Volume ◽  
Large Scale ◽  
Die Casting ◽  
Casting Machine ◽  
Semisolid Slurry ◽  
Valve Body ◽  
New Energy ◽  
Thin Walled ◽  
New Energy Vehicles

An efficient and low-cost aluminum alloy uniform solidification control technology, namely, air-cooled stirring rod (ACSR) process, has been developed for preparing large volume semisolid slurry. The semisolid slurry preparation process is connected with the die-casting machine to form multiple integrated intelligent rheological die-casting production lines for the efficient preparation of rheological die-casting of large-scale thin-walled aluminum alloys. At present, the ACSR process can produce 40 kg of large-volume semisolid slurry with a solid phase ratio of 25% to 35% within 30 s. This rheological die-casting process has been industrialized for the preparation of high-quality aluminum alloy large-scale thin-walled parts, such as new energy vehicles and 5G communications. Typical products produced by this process include heat dissipation housings for 5G communications, filter housings, antenna chassis and three-electric structural shell, end cover, and ABS system valve body for new energy vehicles. Compared with traditional die castings, aluminum alloy castings prepared by the new process not only have fine and spherical microstructures, good surface quality, and fewer internal pores but also enjoys more excellent mechanical properties and thermal conductivity.

Casting Mold Designing for Double-Chamber Throttle Valve

2013 ◽  
Vol 787 ◽  
pp. 445-449
Author(s):  
Ao Bing Wang ◽  
Xue Dong Wang ◽  
Zheng Dong Chen ◽  
Li Yong Ni ◽  
Xiao Qin Gu
Keyword(s):  
Die Casting ◽  
Casting Machine ◽  
Bottom Surface ◽  
Process Scheme ◽  
Molding Process ◽  
Valve Body ◽  
Throttle Valve ◽  
Machine Mold ◽  
Die Castings ◽  
Double Chamber

The structure and processing of double chamber throttle valve body castings were analyzed. Die-casting molding process scheme was established. The design of mold includes three core-drawing mechanisms. Considering the large parts surface area and the relatively small wall thickness and the requirement of parting, the gate was arranged on the casting bottom surface. For economy and die easy maintenance considerations, die-casting machine, mold, and mold standard parts should be standard parts. The designs of mold gating system and non-standard pieces were completed. Proved by actual production, the mold operated smoothly, without clamping stagnation, and the production of die castings meet delivery requirements.

Improvement of Hydraulic System of New Energy Saving Die Casting Machine

2012 ◽  
Vol 591-593 ◽  
pp. 428-431
Author(s):  
Xu Xia Zhu ◽  
Wei Min Zhao ◽  
Jia Feng Xu
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Energy Saving ◽  
Hydraulic System ◽  
Energy Supply ◽  
Die Casting ◽  
Casting Machine ◽  
New Methods ◽  
New Energy

Due to the growing tension of non-renewable energy supply, in order to enhance sustainable development and competitiveness of the die-casting equipment, developing new energy-saving die casting machine is imperative. In this paper the hydraulic system of die casting machine was studied, mainly about how to adjust and improve its oil supply and oil return system, servo technology and pneumatics were applied, the result shows that the new methods can effectively reduce the overall energy consumption, and improve the efficiency of the system.

Manufacturing Process of Large Scale Sandwich Structure with Variable Thickness of PMI Foam Core

2011 ◽  
Vol 299-300 ◽  
pp. 816-819
Author(s):  
Chun Wang ◽  
Xuan Ming Zhang ◽  
Chun Ying Tang
Keyword(s):  
Aluminum Alloy ◽  
Variable Thickness ◽  
Sandwich Structure ◽  
Large Scale ◽  
Cnc Machining ◽  
Foam Core ◽  
Molding Process ◽  
Thin Walled ◽  
Sandwich Core ◽  
Aluminum Alloy Panels

Composite sandwich structures are extensively used in the aerospace, wind power, sports equipment, shipbuilding, automotive and train locomotive industries in order to improve structure rigidity and reduce weight. The molding process of sandwich structure using glass cloth and fibre materials as panels has been reported in many literatures. However, few researches are found relative to the molding process of large scale sandwich structure with the characteristics of thin-walled aluminum alloy panels and variable thickness of Polymethacrylimide (PMI) foam cores. This paper describes a preformed molding process that consists of thermoforming foam core blocks, assembling blocks into a whole sandwich core, CNC machining the sandwich core according to surface models of the thin-walled aluminum alloy panels, and finally, bonding and curing panels and sandwich cores.

Industrialized Application of Rheo-HPDC Process for the Production of Large Thin-Walled Aluminum Alloy Parts

2019 ◽  
Vol 285 ◽  
pp. 453-458 ◽  
Author(s):  
Ming Fan Qi ◽  
Yong Lin Kang ◽  
Quan Quan Qiu
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Shrinkage Porosity ◽  
Semisolid Slurry ◽  
High Quality ◽  
Refined Microstructure ◽  
Primary Particles ◽  
Thin Walled ◽  
Pressure Die Casting

A simplified and efficient process, namely air-cooled stirring rod (ACSR), was proposed to prepare semisolid slurry of aluminum alloys. An advanced integrated rheological high pressure die-casting (Rheo-HPDC) technology was established by combining the ACSR equipment with HPDC machines to produce high quality aluminum alloy products. Microstructures, surface qualities, mechanical properties, corrosion resistances and thermal conductivities of the Al-8Si alloy parts prepared by Rheo-HPDC were investigated and compared to those prepared by traditional HPDC. The results indicated that the Rheo-HPDC process can prepare aluminum alloy parts in which the primary particles are fine and spherical, and there is few shrinkage porosity. Multifarious high quality large thin-walled aluminum alloy parts, such as filter shells, cooling shells, antenna crates and mounting brackets for communication, were produced by the process. Rheo-HPDC alloys showed improved surface quality to those formed by traditional HPDC, and the surface roughness is small and avoid employing CNC to surface finish. Also, compared with HPDC alloys, the alloys prepared by Rheo-HPDC have an increased mechanical properties and thermal conductivity due to high density and refined microstructure. Furthermore, Rheo-HPDC aluminum alloys indicated a remarkable improvement in corrosion resistance as shown by the results of electrochemical and weight loss experiments.

Semi-Solid Rheological Squeeze Casting Process of ZL114A Aluminum Alloy Thin-Wall Complex Casting

2020 ◽  
Vol 993 ◽  
pp. 248-253
Author(s):  
Yong Tao Xu ◽  
Tian Yang Guan ◽  
Zhi Feng Zhang ◽  
Yue Long Bai ◽  
Wei Min Mao
Keyword(s):  
Aluminum Alloy ◽  
Large Scale ◽  
Technical Problem ◽  
Solidification Process ◽  
Casting Process ◽  
Thin Wall ◽  
Thin Walled ◽  
Semi Solid ◽  
Complex Casting ◽  
Filling And Solidification

High-strength aluminum alloy with large-scale and thin-walled complex castings have broad application prospects in aerospace, weapons, electronics, defense and military industries. However, due to the uneven thickness of the plate, the casting defects are inevitable by the ordinary casting method, and it is impossible to accurately control the shape and performance of the casting in the casting process. Previous studies have found that the semi-solid rheological extrusion casting technology with short process and near-end type can help solve this technical problem. Therefore, this paper studies the semi-solid rheological extrusion casting process of thin-walled complex casting of ZL114A aluminum alloy. The combination of numerical simulation and experimental research is used to simulate and optimize the filling and solidification process of thin-walled specimens. Based on this, a semi-solid rheological extrusion casting test was conducted. The result showed that, (1) The optimized model can well reflect the filling and solidification process under different rheological extrusion casting parameters, and obtain defect-free castings through process optimization. (2) The thin-walled parts of the thin plate casting produced by semi-solid rheology extrusion have excellent mechanical property and ductility.

Casting Mold Designing for Aluminum Alloy Car Holders

2013 ◽  
Vol 378 ◽  
pp. 350-354
Author(s):  
Xue Dong Wang ◽  
Jian He Lin ◽  
Suo Qing Yu ◽  
Li Yong Ni
Keyword(s):  
Aluminum Alloy ◽  
Die Casting ◽  
Casting Machine ◽  
Bottom Surface ◽  
Gating System ◽  
Process Scheme ◽  
Molding Process ◽  
Casting Mold ◽  
Machine Mold ◽  
Die Castings

The structure and processing of car holders castings were analyzed. Die-casting molding process scheme was established. The design of mold includes three core-drawing mechanisms. the gate of the gating system was arranged on the casting bottom surface. For economy and die easy maintenance considerations, die-casting machine, mold, and mold standard parts should be standard parts. The designs of mold gating system and non-standard pieces were completed with the aid of PROE. Proved by actual production, the mold operated smoothly, without clamping stagnation, and the production of die castings meet delivery requirements.

The recent progress and perspectives on the metal- and covalent- organic frameworks based solid-state electrolytes for lithium-ion batteries

2021 ◽  
Author(s):  
Wenhuan Huang ◽  
Ximing Li ◽  
Xiufang Yang ◽  
Xingxing Zhang ◽  
Haihua Wang
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Large Scale ◽  
Recent Progress ◽  
Lithium Ion ◽  
Excellent Electrochemical Performance ◽  
New Energy ◽  
New Energy Vehicles

Lithium ion battery (LIB) has been widely used in new energy vehicles, large-scale energy storage, intelligent electronic equipment for its excellent electrochemical performance. Facing the increasing demands on good safety...

Application Analysis of Solar Thermal Conversion Thin Film Materials on the New Energy Vehicles

2013 ◽  
Vol 823 ◽  
pp. 640-643
Author(s):  
Xian Jing Ruan
Keyword(s):  
High Temperature ◽  
Large Scale ◽  
Thermal Conversion ◽  
Vital Role ◽  
Solar Thermal ◽  
Atmospheric Environment ◽  
Selective Absorption ◽  
Study Results ◽  
New Energy ◽  
New Energy Vehicles

The future of the world energy supply and consumption will be diversified, clean, efficient and global marketization direction. In existing thermal applications technologies, selective absorption coating technology is recognized as the more core technology, it plays a vital role in improve the conversion efficiency of solar thermal, large-scale promotion solar thermal applications. Study results suggest that: the proposed process and structural design, can be prepared in high-temperature non-vacuum environment, with a more balanced absorption performance and reliable high-temperature atmospheric environment service stability TiMoAlON selective absorption film on the new energy vehicles.

The Impact of Fast Charging for EVs on Distribution System

2014 ◽  
Vol 1070-1072 ◽  
pp. 1664-1667 ◽  
Author(s):  
Wen Chen ◽  
Chun Lin Guo
Keyword(s):  
Electric Vehicle ◽  
Distribution System ◽  
Large Scale ◽  
Distribution Network ◽  
Chinese Government ◽  
Voltage Loss ◽  
Fast Charging ◽  
New Energy ◽  
The Impact ◽  
New Energy Vehicles

With the implementation of incentive policies for new energy vehicles of Chinese government, the development of new energy vehicles in China has made considerable progress, and in the field of electric vehicle charging facilities can also appeared in a number of demonstration projects. With the support of the National Grid, the establishment of a domestic Chongqing's first commercial fast-charging stations was done in 2012. Research on Electric vehicle fast charging caused to the distribution network with future large-scale deployment of electric vehicles will be of great value in guiding for the planning of distribution of the networks. In this work, we used a typical distribution network model to simulate the real conditions. The voltage loss caused by EVs’ fast charging on the transmission line was studied under different implementation scenarios.

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