Papers by Keyword: Mold

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Authors: Xin Jin, Ting Zhi Ren
Abstract: A new non-sinusoidal oscillation waveform which is shown by waveform distortional rate was advanced. The amplitude, oscillation frequency, waveform distortional rate and casting velocity were established for a computer model of the continuous casting process. The range of waveform distortional rate was ascertained. The choosing method of amplitude and oscillation frequency was given. These offered a theory basis to the application of the advanced technique. Industrial scale experiments showed the new type waveform is effective on improving the quality of continuous casting slab and reducing breakout.
Authors: Qing Hua Chen, Miao Gang Su, Yi Bin He, Ying Jun Chen, Wen Gang Wu
Abstract: This paper proposes an environmentally friendly energy-saving high-quality laser stamping foil film with particular seam-free feature. The whole idea is to meet the country's high-end anti-counterfeiting technology, consumer products packaging appearance, high-end gifts demand for the target material. The State Quality Supervision and Testing Center (Guangzhou) detection results shows that it includes many merits such as functionality, security, reliability, ease of use, flexibility, stability and other indicators, the performance meets or exceeds the requirements of enterprise technical conditions.
Authors: Ming Qing Wu, Yi Cui
Abstract: The design for a plate of cold stamping die design, Analysis of the technology of first part, determine the mould structure scheme, design choose zero, components, mainly to the punch, concave die, die and punch, design, drawing mould assembly drawing.
Authors: Tae Il Seo, Byeong Uk Song, Yong Seok Lim
Abstract: This paper presents a series of injection process simulations for blow molding preforms by using MoldFlow. The injection-blowing system was used and this consists 3 stages on the same machine; (1) preform injection, (2) blowing and (3) ejection. The quality of preform injection process is an important factor that can dominate the whole process efficiency. The injection mold system consists of 10 cavities and a hot runner system. The hot runner system has 10 cavities and temperature of each cavity can be independently controlled. Through several filling analyses, suitable temperature of each gate was determined so that all cavities could be simultaneously filled. Weld lines on the bottom of preforms were predicted. This fact can be an important aspect because preforms will be blown. To improve cooling efficiency, ''Floody Cooling Type" channels were applied. Conventional cooling channels were straight-line types and then distances between cooling channels and cavities cannot be uniformed. Floody cooling type channels were uniformly placed around cavities as far as possible. To compare two different types of cooling channels, cooling tests of MoldFlow were carried out and certain advantages of floody cooling type channels were evaluated.
Authors: S. Thong-u-thai, S. Kaewkuekool
Abstract: The research aim was to determine the course outline and study of relationship between conpetency program and Mold & Die occupation. The research tools used to collect the data were questionnaires and focus groups. The sampling group was chosen by purposive random sampling, which included experts related to the development of personnel in the molding industry. Results for this is that the course competencies are defined by the enterprises themselves to be divided into three levels of personnel: operators, experts and management. Role of performance standards can be devided for operating level out of 6 role include skill drawing mechanical works, mechanical works, material, english in industry, math in industry and safety in industry. An analysis of competency courses, by Delphi technique, found that experts, educational institute representatives, related mold personnel development institute representatives and enterprise representatives agreed both times. The difference was that it was higher for the second time although most medians were at ‘agree-the-most’ level. And average correlation is high. Relationship every competence has significant at .01.
Authors: Guang Quan Yue, Bo Ming Zhang, Shan Yi Du, Fu Hong Dai, Cheng Zhang, Xian Zhu Liang, Yong Gui Wang
Abstract: Framed curing mold is subjected to an uneven thermal load, gravity force and the pressures from composite parts and auxiliary tools during autoclave processing of thermosetting composite structures. And those loads induce the warpage of framed-mold. The warpage of framed-mold during autoclave processing influences dimensional precision of composite parts. In the present work, a three-dimensional finite element model for prediction of the warpage of framed-mold during autoclave processing has been developed. This model solved the coupling problem between the deformation and the temperature distribution of framed-mold and allows analysis of all major identified deformation influencing factors. And numerical predictions compare quite well with experimental measurements. A parametric study was performed using FEM program to examine the effect of varying the thickness of framed-mold, the shape and the dimension of mold vents.
Authors: Ying Chun Liu
Abstract: 1060 pure aluminium material parts after blanking, deep drawing, flanging with crimping mold edge forming, through process analysis and calculation, determine the blank, bending force, and choose to press. Mould structure analysis, and carries on the edge of major parts of the mold design, mold assembly drawing.
Authors: Xing Zhong Zhang, Hong Tao Zhu, A. Kiet Tieu, Hai Bo Xie, Xiao Zhong Du, Xian Kui Li, Chun Xia Dou
Abstract: In this paper, a new technique to set up non-sinusoidal oscillations of the mold in continuous casting is presented. The waveform functions of this non-sinusoidal oscillation technique and operational parameters are analyzed and the design to realize the non-sinusoidal oscillation of mold is presented. It is anticipated that this technique will be widely applied as it has many advantages such as lower investment and maintenance cost, simple equipment which is easy to manufacture and maintain.
Authors: Gábor Fehérvári, Mihály Réger, Balázs Verő
Authors: S. Gorbatyuk, A. Gerasimova, N.N. Belkina
Abstract: Studies on enhancing the service life of continuous casting moulds at their narrow walls of copper M1 before the last repair by means of a heat spraying wear-resistant layer of the chrome-nickel coating have been carried out. Preliminary, the coating`s structure, phase composition, skin hardness and microhardness of chromium-nickel coating were studied. It is established that to obtain the required cleanliness level of the wall surface by making use of their mechanical operation, it is necessary to conduct thickness of the chromium-nickel coating operations. 0.5 – 0.6 mm chrome-nickel thermal coating was applied to the surface of the wall of a thick-walled narrow pair crystallizer. The results indicate the high-quality coating acceptable for application to the working surface of narrow walls of thick-walled moulds.
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