Effect of Friction on Dynamic Fit of Injection Mechanism of Squeeze Casting Machine

2020 ◽  
Author(s):  
Wenbin Pang ◽  
Dongdong You ◽  
Hangjian Guan ◽  
Jianxin Deng
Keyword(s):  
Squeeze Casting ◽  
Casting Machine ◽  
Injection Mechanism

Logistic Performance Evaluation of Squeeze Casting Equipments Based on Simulation

2012 ◽  
Vol 468-471 ◽  
pp. 1936-1940
Author(s):  
Jian Xin Deng
Keyword(s):  
Performance Evaluation ◽  
Cycle Time ◽  
Processing Time ◽  
Squeeze Casting ◽  
Casting Machine ◽  
Utilization Rate ◽  
Production Cycle ◽  
Rate Performance ◽  
Curing Time ◽  
Simulation Results

The logistic performance of a squeeze casting equipment like production cycle time and the utilization rate of components, has impacts on the production rhythm , cast quality and it's lifecycle. So it is essential to analyze the logistic performance of squeeze casting equipments during design, buying and using. This paper deals with evaluating the logistic performance of squeeze casting equipments through simulation.Flexsim software was employed to simulate squeeze casting equipments, where the simulation model of a squeeze casting machine was constructed and the utilization rate was investigated by conducting four simulation samples of different cast products.It is indicated that simulation is an easy and effective method to evaluate the utilization rate performance of squeeze casting equipments and it is concluded that the utilization rate of all component cells except squeeze mechanism is very low and decreases with the curing time of casts increase, their value is very close to the ratio of the their processing time to each total cycle time. The simulation results can also help us find the bottleneck and optimize design of the squeeze casting equipment.

Effect of T6 Heat Treatment in Tribological Properties of A356 Aluminum Alloy Reinforced with Al2O3 Nanoparticles by Combination Effect of Stir and Squeeze Casting Method

2014 ◽  
Vol 592-594 ◽  
pp. 968-971 ◽  
Author(s):  
K. Sekar ◽  
Allesu Kanjirathikal ◽  
M.A. Joseph
Keyword(s):  
Heat Treatment ◽  
Tribological Properties ◽  
Squeeze Casting ◽  
Casting Machine ◽  
A356 Alloy ◽  
Heat Treatment Condition ◽  
Attractive Alternative ◽  
T6 Heat Treatment ◽  
A356 Aluminum ◽  
Pin On Disk

A356 alloys are attractive alternative for automotive and aeronautical applications. In this work the effects of T6 heat treatment in tribological properties of A356 alloy reinforced with Al2O3 nanoparticles of size 30nm are investigated. The percentage inclusions Al2O3 were varied from 0.5 to 1.5wt%. The particles were added with stirring at 400rpm and squeeze casting at 7500c and pressure of 600Mpa in the squeeze casting machine. The tribological properties of the samples were also investigated by pin-on-disk tests at 10,30,50and 70N, sliding speed 0.534m/s and sliding distance 1100m in dry condition. The lowest dry wear rate obtained through T6 heat treatment condition.

Development of Light-Weight Al Scroll Compressor for Car Air Conditioner

2004 ◽  
Vol 449-452 ◽  
pp. 149-152
Author(s):  
Ik Min Park ◽  
Il Dong Choi ◽  
Yong Ho Park
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Squeeze Casting ◽  
Flow Analysis ◽  
Casting Machine ◽  
Optimum Process ◽  
Process Conditions ◽  
Al Alloy ◽  
Air Conditioner ◽  
Scroll Compressor

The scroll compressor with high cooling efficiency and lower oscillating noise can be a candidate material for a part of car air conditioner, household air conditioner and so on. When Al alloy with high strength is used for scroll compressor instead of cast iron, rotation speed can be increased by weight reduction. To design Al alloy which has enough mechanical properties to replace cast iron, the effect of alloying elements, such as Si(13-15%), Cu(4-5%), and Mg(0.5-1%) and cooling rates on the mechanical properties of squeeze cast Al alloy was studied. The influence of Sr and P modification treatment on Si morphology was also studied. Aluminum alloy over 400MPa of tensile strength and 2% elongation was developed. Al scroll samples was fabricated by squeeze casting machine(UBE 800ton) with using 2 cavity mold. Flow-3D which is a three dimensional melt flow analysis program was used to find most proper mold design and optimum process conditions for squeeze casting before making samples. Relationship between secondary dendrite arm spacing and cooling rate was simulated by Flow-3D and compared with experimental results.

Impact of Temperature Control on the Dynamic Clearance of the Injection System of Squeeze Casting Machine

2013 ◽  
Vol 753-755 ◽  
pp. 1396-1400
Author(s):  
Shang Ping Bai ◽  
Dong Dong You ◽  
Jia Huan Zhao ◽  
Yuan Yuan Li
Keyword(s):  
Mechanical Loading ◽  
Temperature Control ◽  
Squeeze Casting ◽  
Control Method ◽  
Casting Machine ◽  
Injection System ◽  
Injection Process ◽  
System A ◽  
Vertical Injection ◽  
Loading Effects

Changes of the clearance between punch and chamber resulting from thermal-mechanical loading effects affect the injection process of squeeze casting greatly. This paper aims to control the changes of the dynamic clearance in order to ensure the smooth operation of the injection system. A temperature control method by cooling punch was proposed, and two cases of vertical injection processes, which were cooling and non-cooling, were simulated during the ten squeeze casting cycles. The clearance changed from the initial 0.15mm to the stable 0.099mm in the case of cooling, while from the initial 0.15mm to the stable 0.071mm in the case of non-cooling, which demonstrated the temperature control method was effective and feasible.

The Analysis of Scrapping in Squeeze Casting Injection Device Based on FEM

2013 ◽  
Vol 365-366 ◽  
pp. 216-219
Author(s):  
Lei Song ◽  
Ming Shao ◽  
Lin Yong Huang
Keyword(s):  
Squeeze Casting ◽  
Casting Machine ◽  
Shot Sleeve ◽  
Qualitative Investigation ◽  
Injection Device

Injection device is one of key parts of Squeeze Casting Machine, and scrapping problem is the pivotal knot of leading to injection device’s malfunction and lifetime cutting of shot sleeve. This paper computes out the displacement values of shot sleeve and plunger tip in radius direction through FEM, and makes qualitative investigation on scrapping problem of injection device.

Development Status and Applications Prospect of Squeeze Casting Technology

2012 ◽  
Vol 538-541 ◽  
pp. 1154-1157
Author(s):  
Hai Bo Yang ◽  
Xing Sheng Zhao ◽  
Wei Zhong Fan ◽  
Xue Wen Chen ◽  
De Ying Xu
Keyword(s):  
Squeeze Casting ◽  
Casting Machine ◽  
National Defense ◽  
Process Technology ◽  
Car Industry ◽  
Development Status ◽  
Casting Technology ◽  
Applicable Range ◽  
Near Net Shape ◽  
Casting Industry

Squeeze casting(liquid forging), a process technology that combines casting- forging and near net-shape high-quality engineering components，is always subjected high attention of the industrial circle. The squeeze casting technology which refers to improve the products properties and expand the applicable range of the squeeze casting is developing fast. With the Flourishing development of car industry and the constant renewal of National Defense Equipment, it raises a new requirement for squeeze casting industry. This paper discusses the process technology and casting machine of domestic and overseas.

Study on high-temperature wear and mechanism of Al-Si/graphite composites prepared by the die-casting process

2020 ◽  
Vol 72 (10) ◽  
pp. 1153-1158 ◽  
Author(s):  
Yafei Deng ◽  
Xiaotao Pan ◽  
Guoxun Zeng ◽  
Jie Liu ◽  
Sinong Xiao ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Peer Review ◽  
Die Casting ◽  
Casting Machine ◽  
Injection Pressure ◽  
Casting Process ◽  
Matrix Alloy ◽  
Content Type ◽  
The Matrix

Purpose This paper aims to improve the tribological properties of aluminum alloys and reduce their wear rate. Design/methodology/approach Carbon is placed in the model at room temperature, pour 680°C of molten aluminum into the pressure chamber, and then pressed it into the mold containing carbon felt through a die casting machine, and waited for it to cool, which used an injection pressure of 52.8 MPa and held the same pressure for 15 s. Findings The result indicated that the mechanical properties of matrix and composite are similar, and the compressive strength of the composite is only 95% of the matrix alloy. However, the composite showed a low friction coefficient, the friction coefficient of Gr/Al composite is only 0.15, which just is two-third than that of the matrix alloy. Similarly, the wear rate of the composite is less than 4% of the matrix. In addition, the composite can avoid severe wear before 200°C, but the matrix alloy only 100°C. Originality/value This material has excellent friction properties and is able to maintain this excellent performance at high temperatures. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-10-2019-0454/

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