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.

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.

Quality Control System for Die Castings Based on Statistic Analysis

2012 ◽  
Vol 246-247 ◽  
pp. 918-923
Author(s):  
Xiao Fang Ruan
Keyword(s):  
Quality Control ◽  
Control System ◽  
Statistical Analysis ◽  
Die Casting ◽  
Ferrous Metal ◽  
Casting Machine ◽  
Casting Process ◽  
Quality Control System ◽  
Die Castings

Die casting technology is applied widely for mass production of non-ferrous metal parts. How to guarantee the quality of die castings is always a concerned topic. A quality control system for die casting machine was developed based on statistical analysis of technology parameters. Firstly the original data is acquired from die casting machine and the technology curves are displayed. Secondly, the technology parameters are identified automatically and a database of technology parameters is established. Thirdly, a statistical analysis based on the database is performed. The statistics parameters of expecta -tion and deviation are figured out and the probability distribution diagrams for technology parameters are displayed. Finally, Tolerances for technology parameters are figured out and then the system will monitor the die casting process according to the tolerances. A practical system realization in a die casting machine is demonstrated by its monitoring interfaces. Statistical information and on-line monitoring provided by this system are helpful to guarantee the quality of die castings.

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.

COPPER ALLOY No. 878

Alloy Digest ◽  
1979 ◽  
Vol 28 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Copper Alloy ◽  
Die Casting ◽  
Heat Treating ◽  
Casting Alloys ◽  
Copper Zinc ◽  
Die Castings ◽  
Very High

Abstract Copper Alloy No. 878 is a copper-zinc-silicon alloy for die castings. Among the brass die-casting alloys, it has the highest strength, hardness and wear resistance; however, it is the most difficult to machine. It is used where very high requirements must be met for strength and wear resistance. Its many applications include tools, pump impellers, gears and marine hardware. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-386. Producer or source: Copper alloy producers.

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/

3D Micromixer

2012 ◽  
Author(s):  
Bahador Farshchian ◽  
Junseo Choi ◽  
Sunggook Park
Keyword(s):  
Cover Plate ◽  
Bottom Surface ◽  
Mixing Efficiency ◽  
Molding Process ◽  
Specific Flow ◽  
Pdms Stamp ◽  
Fluorescein Dye ◽  
Solvent Bonding ◽  
Peeling Off

This paper presents the fabrication of a 3D microchannel whose sidewalls and bottom surface are patterned with ratchets using a modified 3D molding process. In the modified 3D molding process the surface of poly(methyl methacrylate) (PMMA) is first patterned using a brass mold having ratchet structures. Then PDMS prepolymer was spin coated over the surface of micropatterned PMMA and cured followed by the primary molding using a brass mold having a T-conjunction protrusion. After primary molding demolding was done by first demolding the brass mold and then peeling off PDMS stamp from PMMA substrate. By setting a 45° angle between direction of ratchets patterned on the surface of PMMA and the brass mold protrusion prior to primary molding 45° slanted ratchets were formed on the sidewall and bottom surface of microchannel using the modified 3D molding. The scanning electron microscope (SEM) micrographs show a successful integration of micropatterns inside the microchannel. Holes were drilled in the inlet and outlet area of the 3D channel before bonding. A solvent bonding technique was used for bonding of 3D channel to a plain cover plate. After bonding capillary tubes were inserted into the holes and glued to the chip using an epoxy glue. For characterization of mixing fluorescence intensity was quantified in the 3D microchannel as deionized water and fluorescein dye injected from different inlets of 3D micromixer were mixed along the 3D microchannel and mixing efficiency was calculated. The results were compared with the data obtained for similar microdevice whose surfaces were not patterned. The results demonstrate at a specific flow rate a faster mixing occurs in a microdevice whose sidewall and bottom surface are patterned with slanted 45° ratchets.

scholarly journals Preventive maintenance pada mesin die casting dengan age replacement model untuk peningkatan reliabilitas mesin

2020 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Andriani Andriani ◽  
Ikhsan Romli
Keyword(s):  
Preventive Maintenance ◽  
Die Casting ◽  
Casting Machine ◽  
Engine Performance ◽  
Cost Savings ◽  
Distribution Patterns ◽  
Distribution Data ◽  
Time Data ◽  
Replacement Model ◽  
Age Replacement

In an industry, the maintenance department plays a very important role in ensuring the smooth production process. The method of machine maintenance with preventive maintenance is a strategy that can be used to repair existing machines. This is related to proper and regular maintenance can improve engine performance and reduce the level of engine damage which will increase the continuity of production activities. In the die casting division of PT Astra Honda Motor in the observation on the die casting machine 07 there were 45 times damage to the ladle component and 11 times the damage to the auto spray component. These two components are critical components of the 07 die casting machine. After testing the compatibility index and the good compatibility of the damage time data and repair time data to obtain distribution data distribution patterns, obtain the tablespoon component MTTF assessment results of 107,833 hours and auto spray components amounting to 314,226 hours. Whereas the MTTR value of the spoon component is 0.385 hours and the auto spray component is 0.766 hours. The next step is to look for critical component replacement time intervals with the age replacement model, to further review whether it is related to increased reliability, decrease in total downtime, and cost savings before preventive maintenance is carried out and after preventive maintenance is carried out.

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