PENERAPAN DIAGRAM KENDALI MAXIMUM MULTIVARIATE CUMULATIVE SUM (MAX-MCUSUM) PADA PENGENDALIAN KUALITAS PRODUK KACANG (Studi Kasus: Produk Kacang Garing di PT XY)

Now, Statistical quality control be a particular concern to large companies.PT XY is one of the largest nut company in Indonesia that has implemented the quality standards of a product. Max-MCUSUM control chart becomes a tool that is graphically used to monitor and evaluate whether the process is under control or nut. Based on Cheng and Thaga (2005), Max-MCUSUM control chart takes precedence over detecting small shift based on average and variability in industry data. The quality characteristic of Kacang Garing will be variables, namely broken nut skin, bean seed 1, and foam nut skin. Max-MCUSUM control chart is controlled with the control limit (h) from ARL (Average Run Length) simulation of 370 is 429,69. ARL is an average of samples that need to be decribed before it goes out of control. The research continued with multivariate capability process with MCp worth 0,905 and MCpk worth 1,355. Those value indicates that Kacang Garing has met the quality specification stipulated by PT XY. Broken nut skin becomes the most dominant cause based on pareto chart and carried out analysis by using fishbone chart so that is known the main factor causing broken nut skin are machine, material, and method.

The Design of a Tomato Powder Processing Plant with a Capacity of 75,000 Tonnes Per Annum in Oyo State, Nigeria, West Africa

This project designed a plant that will process 250 tonnes of raw tomatoes per day. The duration of this production was spread across 24 hours and operated for 300 days in a year, which gave a yield of 17.5 tons of tomato powder per day. From these specifications, the best process route was synthesized. The process route selected involved choosing and sorting the tomatoes, washing, blanching, blending, spray drying (as the drying process), packaging and labeling. Through a series of investigations, the most feasible way to dry tomato powder on an industrial scale proved to be the spray-drying method because the process was very rapid, required low labor cost, and was relatively simple to operate and sustain. The particle size was also easy to control with this technology, making it easy to correlate with product standards. The equipment to be used was then identified which included the machine vision, a spray washer, a water Blancher, an industrial blender, a spray dryer, and a powder packaging machine. Material and energy balance were evaluated around the whole plant. A process flow diagram and basic piping and instrumentation diagram were also computed using engineering software such as Microsoft Visio. From the previous work done, the selected process unit, the spray dryer, was designed with a detailed piping and instrumentation diagram made around it. The site of the plant was resolved, adjacent oriental foods along the Lagos-Ibadan Expressway. It was necessary to site the plant in an area where raw materials can easily be delivered to. The area selected was directly linked to a major highway, the Lagos-Ibadan Expressway, thereby making transport quite affordable. The site layout alongside the plant layout was constructed. The layouts clearly showed the standard flow process.

Analytical modeling of tool failure boundary map in milling titanium alloy

As a typical aerospace difficult-to-machine material, tool failure in milling titanium alloy Ti6Al4V will reduce the stability of the milling process and affect the surface quality of the workpiece. Aiming at the fact that cemented carbide tools are prone to wear failure and breakage failure in milling titanium alloy, a safe tool failure boundary map is provided to ensure that the tools will not occur failure with the cutting parameters selected in the safe area during the prediction time. Based on the processing characteristics of Ti6Al4V, the failure boundary map mainly considers three forms of tool failure: flank wear, rake wear, and cutting edge breakage. By revealing the three failure mechanisms, the failure analytical model is established and the failure boundary map is obtained. Compared with the experimental results, it has good consistency, and the research results can provide a reference for the field of titanium alloy cutting process.

EXPERIMENTAL INVESTIGATION OF MICRO-EDM OPERATION IN INCONEL 718

The increasing trends towards miniaturized and lightweight components for various engineering and aerospace applications by unconventional machining the demand for micro-electrical discharge machining (EDM) have become increasingly wide. Micro-EDM is one of the most promising unconventional machining processes as compared to other unconventional machining due to its lower cost, ease of operation, and accuracy. This research explores the experimental investigation of micro-EDM operation on hard and difficult to machine material Inconel 718. The micro-holes were fabricated on an Inconel 718 workpiece with a copper electrode. The influence of input process parameters on material removal rate (MRR), machining time, and quality of the fabricated micro-holes were studied. Overcut and taperness of the fabricated micro-sized through holes were measured to address the accuracy of the fabricated micro-holes in micro-EDM operation. Experimental results reveal that the increase in current and voltage increases the MRR, and reduced machining time but at the cost of dimensional accuracy of the fabricated holes. The high value of current and voltage resulted in poor surface quality. The optimum machining condition that gives higher MRR with higher machining precision was obtained by experimenting while machining Inconel 718.

ANALYZING THE EFFECT OF DENSITY VALUE DEVIATION ON PRINT QUALITY

The quality control activities, in particular the measurement of density values, are part of the quality control parameters carried out by each company. Companies sometimes forget about the quality parameters of the name, even though the quality can give the printed products a good guarantee in the eyes of consumers. To achieve the quality level, of course, the business does not stand idle, there are several things that need to be done or provided by the business to support the quality, namely man (human), machine (machine), material (material), and method (method). In the development of technology in an increasingly advanced digital world, companies want to continue to compete with a digital world by making inroads, this of course gives the products produced by the company a good or a good level of quality. In this discussion, there is an identification of problematic aspects arising from the deviation of density values as well as ways to obtain standard density values and factors that affect the quality of prints on book cover prints using a Heidelberg machine.Keywords—Quality Control, Density, Standart, Product, Deviation

DGM 430 OFFSET WEB MACHINE PRINT QUALITY

The review control activity, especially the decrease in the quality of the printed output, is one of the quality control parameters carried out by each company. To get quality, of course, the company does not remain silent, there are several things that need to be done or provided by the company to be able to support quality, namely man (human), machine (machine), material (material), and methods (methods). In the development of technology in an increasingly advanced digital world, companies want to continue to compete with a digital world by making breakthroughs, this of course makes the products produced by the company have a good or good quality level. In this study, there is an identification of the problem aspects that arise from the causes of the print results and how to get solutions to overcome the problems and factors that affect the quality of the print on the printed contents of the Cultural Arts Service Book using the DGM 430 Web Offset machineKeywords— Quality, Parameters, Web Offsets

Reasearch of The Effect of Graphene Nanoparticles and Sulfurized Additives to MQL for Machining of Ti-6Al-4V

given its favourable comprehensive properties, titanium alloy has been extensively developed and used in numerous fields. However, its low thermal conductivity and strong chemical activity have led to its reputation as a difficult-to-machine material. Thus, graphene nanoparticles and sulfur-based extreme pressure (EP) additive were added to rapeseed oil to increase the lubrication and cooling properties of the machining region. In this study, three lubricants were used to machine titanium alloy: rapeseed oil+graphene+sulfur-based EP additive, rapeseed oil+sulfur-based EP additive, and rapeseed oil; and the subsequent wear of cutting tools, cutting temperature, surface roughness, and cutting force were compared. The most favourable results were found for the combination of rapeseed oil+graphene+sulfur-based EP additive, effectively decreasing the temperature of the cutting area and wear of cutting tools. In comparison with rapeseed oil, the flank wear value decreased by 56.4%. Similarly, the surface roughness and cutting force with the rapeseed oil+graphene+sulfur-based EP additive were lowest, showing a decrease of 36.1% and 27.0% respectively when compared with rapeseed oil.

Machining of titanium alloys for medical application - a review

Titanium alloys for their characteristics have acquired a prominent position in numerous industrial applications. Due to its properties, such as high resistance to corrosion, reduced density, high specific strength, and low Young’s modulus, titanium alloys became indispensable as a biomaterial with high use in medical devices, with special emphasis in the area of orthopedics. Problems associated with its manufacturing by conventional machining processes, such as milling, turning, and drilling are well known and studied. Its low thermal conductivity, high chemical reactivity, high hardness at high temperatures make it classified as difficult to machine material. Despite the already extensive knowledge about machining titanium alloys problems, and the constant technological development to overcome them, it is not yet possible to machine this material like other metals. This work is based on research and review papers from Scopus and Scholar from 2010 to 2020 and addresses the main issues related to the machining of titanium alloys used in medical devices manufacturing and current solutions adopted to solve them. From the research consulted it was possible to conclude that it is consensual that for milling, turning, and helical milling cutting speed can reach up to 100 m/min and up to 40 m/min in drilling. As for feed rate, up to 0.1 mm/tooth for milling and helical milling and up to 0.3 mm/rev for turning and 0.1 mm/rev for drilling. Also, that Minimum Quantity Lubrication is a valid and efficient solution to mitigate titanium alloys machining problems.

Quality Safety Risk Evaluation of Agriculture Product Cold Chain:A 4M1E Analysis Framework

Due to the lack of an efficient cold chain logistics process, China's agricultural postpartum loss has been serious for a long time, and frequent food safety accidents occur. It is of necessity to establish a quality safety management system for the agricultural product cold chain in China. From the five dimensions of man, machine, material, method, and environment (4M1E), we identify the quality risk structure of the agri-food cold chain. An evaluation system is established with the combination of the analytic hierarchy process and entropy value method. A case study demonstrates the effectiveness of the risk assessment system to help enterprises for decision-making on cold chain operations.