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Journal : Info-Teknik

ANALISIS STATISTICAL PROCESS CONTROL INJECTION MOULDING SEBAGAI UPAYA PENGENDALIAN KUALITAS PADA PRODUK PENAKAR DETERJEN DARI PLASTIK UKURAN ɸ 64 x 40,5 mm Etik Puspitasari
INFO-TEKNIK Vol 18, No 2 (2017): INFOTEKNIK VOL. 18 NO.2 2017
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v18i2.4349

Abstract

Plastics are used to make a variety of products for example for tableware, kitchen utensils, farm equipment, bathroom equipment, toys and so on can be replaced with plastic material. The advantages of this plastic material are resistant to corrosion, its density is low enough to float, resilient and strong enough, the thermoplastic type plastic material is mostly softened at sufficiently low temperatures, has an attractive appearance and can be colored if needed.This research was conducted on plastic detergent scraper product with size ɸ64 x 40,5 mm with injection molding system using statistical quality control method and statistical process control such as control chart, pareto diagram, and fishbone used to identify and analyze product defect type and the factors that are the main cause and improvement effort so that the number of defective products can be minimized and product quality can be improved.From the research result, it was found that the optimum temperature and pressure were 200ºC and pressure 30 Bar. Where the main factor affecting the defect production of detergent scraper product of plastic with size × 64 x 40.5 mm with injection molding system is the setting of temperature and pressure must be appropriate and optimal.
PENENTUAN INTERVAL WAKTU PERAWATAN MESIN INJECTION MOULDING MENGGUNAKAN METODE RCM DI PT “X” Alfian Muhtadi; Etik Puspitasari
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12384

Abstract

In the industrialized world, product is the main of a production process that forms a production process system. In order to a system of production process running continuesly, need a maintenance of the equipment and production machines. The machine maintenance is needed to minimize the damage of machine then the machine can be used for a long time. The purpose of the study is to calculate the reliability value in which the interval time of maintenance will be determined so that it can support the reliability of the tool. Method of the study uses the RCM (Reliability Centered Maintenance) to solve machine maintenance problems that often occur at PT “X”. RCM method has the advantage of defining a machine focused maintenance program and avoids unnecessary maintenance activities by specifying appropriate maintenance intervals. This study also presents qualitative data in the form of FMEA analysis (Failure Mode Effect Analysis) and quantitative data in the form of determining reliability values and determining maintenance time intervals which provide a solution for PT. “X”.The result of the study, reliability value of the MJM-JLB-HQ Injection Moulding Machine is 0.9183 at 12 hours, VICTOR Injection Moulding is 0.9243 at 4 hours, and the reliability value of MJM-JLB 198-HQ Mould is 0.5125 at 96 hours, VICTOR's Mould is 0.5063 at 72 hours. For the results of maintenance interval to keep the value of reliability not going down below 0.9 is 12 hours for MJM-JLB198-HQ Injection Molding Machines, then 4 hours for VICTOR Injection Moulding Machines. The result maintenance interval analysis of mould with reliability not going down below the value of 0.5 is 96 hours on MJM-JLB198-HQ Injection Moulding Machine, and 72 hours at VICTOR Injection Moulding Machine.
ANALISIS PENGENDALIAN KUALITAS STATISTIK INJECTION MOULDING PRODUK CUP PLASTIK Ø 80 mm x 70 mm Etik Puspitasari
INFO-TEKNIK Vol 17, No 2 (2016): INFOTEKNIK VOL. 17 NO. 2 2016
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v17i2.2493

Abstract

Plastic is used to make a wide range of products for example to tableware such as plates, cups, spoons and various other equipment. The advantages of this plastic material is resistant to corrosion, its density is low enough so that it can float, process of formation of a plastic material into a product one of them with a system of injection molding plastic products, namely printing process that is generally used for the type of thermoplastic plastics material.The research was conducted on the product plastic cup Ø 80 mm x 70 mm with injection molding systems. using a quality control method that aims to identify and analyze the types of product defects and factors are a major cause of disability so as to minimize the number of defective products and can improve the quality of products produced. From the results of Pareto diagram didapatkan.jenis major flaw for an immediate improvement in product plastic cup Ø 80 mm x 70 mm with injection molding system is defective flashing with a frequency number of failed products by 43% and the probability of failure of 0.43.Based on the fishbone diagram which constitutes the main factor defective product plastic cup Ø 80 mm x 70 mm is flashing where the cause is due to the injection pressure is too high. And remedial efforts to prevent defective products plastic cup Ø 80 mm x 70 mm with a system of injection molding is less injection pressure to minimize or eliminate the flashing because of the high pressure caused the material get into places that are not fitting in the mold.
DESAIN MODEL MINIATUR MESIN CETAK PLASTIK INJEKSI SEBAGAI ALAT BANTU AJAR MATA KULIAH PLASTIK MOULDING DENGAN PENDEKATAN METODE KANO DAN QUALITY FUNCTION DEPLOYMENT (QFD) Etik Puspitasari
INFO-TEKNIK Vol 19, No 2 (2018): INFOTEKNIK VOL. 19 NO. 2 DESEMBER 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jit.v19i2.156

Abstract

Injection molding is the process of printing plastic products that are commonlyused for thermoplastic plastic materials. The working principle of this process isthat the plastic material is heated in a container called a barrel until it reaches itsmelting temperature. Then the material is injected into the print cavity to the brim.Once full, the plastic goods are cooled and ready to be released from the mold.The background of the researchers taking this study was because researchers wereeager to make miniature injection molding machines to be used as teachingmaterials in theory classes so that the lecturers could explain directly thecomponents and workings of injection molding machines in real terms not justimages or videos. The design of miniature models of plastic injection moldingmachines as teaching aids for molding plastic courses uses the canoe methodapproach and Quality Function Deployment (QFD). From the results of theKANO method approach obtained from 11 statement attributes of all attributesincluded in the Must Be category. None of the attributes entered the Indefferentcategory. Then the results of the KANO model correlation with Quality FuntionDeployment (QFD) are known as the priority sequence of attributes in the targetspecifications that will be used for product design. highest priority at House ofQuality (HOQ). And the final stage of the target specifications obtained can bemade of miniature injection molding machines which are used as teaching aids forplastic molding courses.
ANALISA PENGUKURAN LINIER SEBAGAI UPAYA PENGENDALIAN KUALITAS PRODUK DENGAN MENGGUNAKAN METODE CONTROL CHART Etik Puspitasari
INFO-TEKNIK Vol 16, No 2 (2015): INFOTEKNIK VOL. 16 NO. 2 2015
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v16i2.199

Abstract

Quality control should be applied to various fields of both products and services. Quality aims to satisfy and meet customer expectations. One effort in known quality control using control charts, where using these methods we can find products that pass through the specified tolerance limits or defective products.This research was conducted by applying the linear measurement on cylindrical products with a diameter of 20 ± 0.05 mm in turning the results of using calipers with accuracy of 0.05 mm is used to measure the products that have been produced. In this study generated the number of defective products resulting from the process of turning the linear measurement of as much as 6 products that are outside the control limits, which consists of the data no 4, 6, 8, 11, 14 and 22. The factors that cause disability analyzed using fishbone diagrams, and are divided into 4 factors that are of human origin, method, machine and material.Improvement efforts to prevent defective production of turning is necessary to implement training for lathe operators, necessary alignment of straightness of machine or engine. And mechanical drive necessary improvements such as bearings, gears, sliders and then setting up a chisel, setting the workpiece, cutting speed correctly and chisel cutting, selection cutting speed must match the workpiece to be cut and the selection of feeding should be in accordance with the roughness desired , Keywords: Quality control, control charts, linear measurement, fishbone.
ANALISA POLA SPESIMEN PLASTIK UJI PUKUL CHARPY DENGAN MENGGUNAKAN PRINTER 3D Etik Puspitasari
INFO-TEKNIK Vol 20, No 2 (2019): INFOTEKNIK VOL. 20 NO. 1 DESEMBER 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i2.7711

Abstract

Impact testing is needed to measure the toughness of an object that requires a specimen as material to be requested. Where Impact testing specimens from metal that be moulded by casting cannot be made perfect because the angles of the notch are very difficult to make. For this reason, researchers try to make plastic specimens produced from 3D printers where notches or angles in the test specimens can be made precisely using a 3D printer. The design pattern of the plastic test specimen was made according to ASTM standard and tested using the Charpy test having a length of 73.6 mm, a width of 12.7 mm and a thickness of 10 mm, a notch shaped "V" with an angle of 45 ° alongside a notch height of 2, 54 mm . after that it is drawn 3D using 3D software then saved in STL file format then opened, saved and printed in the default software of the 3D printer. The variables researched are layer thickness and temperature. Analysis of the plastic test specimen by using a 3D printer the first is Failed in Impact testing occurred because the placement of the specimen on the charpy compressive test instrument laying would not be straight with the pendulum. The notch angle should be straight with the pendulum by checking the straight position by being photographed from the back and front of the specimen and pendulum. The second obtains if it gets a gap in the slice of the plastic specimen from the type of layer, the energy provided is smaller so that the energy absorbed can be read in the testing process through charpy. The third the plastic specimens code A and code B is getting more layers, the more energy absorbed. The fourth which shows the difference in the nozzle temperature for the plastic test specimens that are set using a nozzle temperature of 200 ° C, the initial energy given is greater and the specimen is stronger receiving the energy load than test plastic specimen using a 180 ° C temperature nozzle.