The patternless casting manufacturing(PCM) technique adopts a new method ofdouble scanning which combines the principle of discreteness and deposition with the resin-bondedsand technique. Two main factors, the liquid ...The patternless casting manufacturing(PCM) technique adopts a new method ofdouble scanning which combines the principle of discreteness and deposition with the resin-bondedsand technique. Two main factors, the liquid penetration regularities in the space between particlesand the shape and dimension of the agglomeration unit body, are studied qualitatively andquantitatively. This provides the theoretical basis for selecting the forming technical parameters.The experiments verify the analysis.展开更多
The patternless casting manufacturing (PCM) technique, which adopts a new concept of double scanning method, combines the principle of discreteness and deposition with resin-bonded sand technique. This paper is to eva...The patternless casting manufacturing (PCM) technique, which adopts a new concept of double scanning method, combines the principle of discreteness and deposition with resin-bonded sand technique. This paper is to evaluate the dimensional accuracy of sand mould on PCM. The two important factors—the liquid penetration rule in the space of particles and the shape and dimension of the agglomeration unit body, which influence the process parameters such as scanning speed, layer thickness, liquid flux on dimension accuracy, and surface qualities, were investigated systematically, thus the theoretical basis for these parameters was provided. Experiments on rapid manufacturing of sand mould were carried out, and the results of the free penetration and the constraint penetration well verified the relationship of the two factors and the process parameters.展开更多
文摘The patternless casting manufacturing(PCM) technique adopts a new method ofdouble scanning which combines the principle of discreteness and deposition with the resin-bondedsand technique. Two main factors, the liquid penetration regularities in the space between particlesand the shape and dimension of the agglomeration unit body, are studied qualitatively andquantitatively. This provides the theoretical basis for selecting the forming technical parameters.The experiments verify the analysis.
基金Supported by the Technology Research and Development Program of Hebei Province, China (No. 07212131)
文摘The patternless casting manufacturing (PCM) technique, which adopts a new concept of double scanning method, combines the principle of discreteness and deposition with resin-bonded sand technique. This paper is to evaluate the dimensional accuracy of sand mould on PCM. The two important factors—the liquid penetration rule in the space of particles and the shape and dimension of the agglomeration unit body, which influence the process parameters such as scanning speed, layer thickness, liquid flux on dimension accuracy, and surface qualities, were investigated systematically, thus the theoretical basis for these parameters was provided. Experiments on rapid manufacturing of sand mould were carried out, and the results of the free penetration and the constraint penetration well verified the relationship of the two factors and the process parameters.
