Identification and Prioritize Strategic Directions and Initiatives of Sustainable Supply Chains Based on Reversed Logistic Through Phase Multi-Criteria Modeled
Issue:
Volume 3, Issue 2, December 2019
Pages:
21-26
Received:
1 January 2019
Accepted:
24 January 2019
Published:
20 December 2019
Abstract: Return and renewed using of used products has changed one of the logistic important activities with early development of industries, this caused to doing rules on this basis and also increasing awareness among people for keeping living-environment and decreasing wastage. Therefore industries need strategic programming and ripple initiatives of stable securing. Therefore the aim of this research was identification and prioritize strategic directions and initiatives of sustainable supply chains based on reversed logistics through phase multi-criteria models (case study: Dena Shiraz tire industry Company). This research was done in two different phases; in first phase, standards of strategic orientations and ripple initiatives of stable securing was identified and deciphered based on reversed logistic, based on study of scientific texts and taking ideas of expert persons (5 basic standards and 28 secondary standards) and alighted basis of questionnaire preparation. In second phase, identified standards was prioritized through phase multi-criteria models and taking ideas of expert persons of tire industry.
Abstract: Return and renewed using of used products has changed one of the logistic important activities with early development of industries, this caused to doing rules on this basis and also increasing awareness among people for keeping living-environment and decreasing wastage. Therefore industries need strategic programming and ripple initiatives of stab...
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Causes and Countermeasures of Strong Vibration of Pipe End Thickener
Issue:
Volume 3, Issue 2, December 2019
Pages:
27-31
Received:
4 April 2019
Accepted:
3 January 2020
Published:
13 January 2020
Abstract: The pipe end thickening machine is a pressure processing equipment for thickening the pipe end of plastic material. The process of thickening the tubing end is to heat one end of the tubing to a certain temperature, push it into the die hall, and close the die cylinder under the push of hydraulic oil to press the end of the pipe. Then, squeeze into the cylinder forward, and the extrusion head on the piston rod thickens the end of the pipe. Complete the thickening process at the end of the pipe. In the production process, due to the great pressure change of the hydraulic system, the vibration of the system is violent, resulting in pipeline cracking, which seriously affects the production. Through the analysis of hydraulic system of pipe end thickener, it is found that the fundamental cause of the system pressure relief vibration is that when the hydraulic system is unloading, the volume of the hydraulic cylinder unloading cavity is large and the energy is accumulated. The problem can be solved by adjusting the section where the actual stroke of the hydraulic cylinder is located in the total stroke to reduce the volume of the pressure relief chamber and the energy released when the pressure is unloaded.
Abstract: The pipe end thickening machine is a pressure processing equipment for thickening the pipe end of plastic material. The process of thickening the tubing end is to heat one end of the tubing to a certain temperature, push it into the die hall, and close the die cylinder under the push of hydraulic oil to press the end of the pipe. Then, squeeze into...
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