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การประชุมวิชาการดานการวิจัยดําเนินงานแหงชาติ ประจําป 2554
วันที่
8-9 กันยายน 2554 ณ โรงแรม เอส ดี อเวนิว กรุงเทพฯ
The Study of Suitable Factor for Welding on Food-Can By Design of Experiment Method
Prachuab Klomjit 1 and Paisan Chantasoponno 2
1, 2 Department of Industrial Engineering and Management, Faculty of Engineering and Industrial Technology
Silpakorn University, Muang Nakornpathom 73000
Tel/Fax: 034-219-362 E-mail: 1 prachuab@su.ac.th, 2 p_chantasoponno@hotmail.com
Abstract
Design of experiment was applied in this research. The main
factors included the electric current, a spring pressure, size of copper
wire and overlap. By testing the response variable, welding strong, weld
flexible, weld thickness, then study aimed to use the proper conditions
for high quality. The results indicated that electric current, a spring
pressure, overlap and size of copper wire have an influence in welding
strong, welding articulate and weld thickness. Electric current and
spring pressure have an influence in post weld overlap. Finally the
appropriate conditions were electric current 55 Amp, a spring pressure
60 daN, welding force 2.10 mm., and overlap 0.7 mm.
Keywords: The Study of Suitable Factor, Design of Experiment,
Welding, Food-Can
1. Introduction
Canned Food Containers are useful for food preservation.
Current packaging of canned food is an essential and commonly used.
In Thailand, the production of canned food contains about 900 million
cans per year. Manufacturing canned food and fruit packed with
competitive quality and price.
Therefore, an important step that will lead to the production
of quality canned food packaging. Depends on the state of the factors
that can optimize the manufacturing process, coating process, polyesterpowder,
weld on the process of sealing cans.
The survey data in the production process found the sample
products defects in the “603x700 size” that had the highest value. The
cause of problem may be it was the highest height, therefore, the risk
may occur greater than in other sizes. The nature of the problem was
divided into 3 categories: “Hot weld”, “Narrowed weld”, and “Cold
weld”. The characteristics testing of weld strength has 4 types as
follows: “Rip test”, “Ball test”, “Post weld test”, and “Stretch weld
test”. The whole problem was happen when the waste was unable to be
reused.
Welding process was the process of forming connections
between the pressing of metal electrodes on both sides. Heat was
generated by electricity and passed the plates. Electricity runs through
the electrode to the steel heat distribution. Anti-heat, hot steel electrode
is higher than the heat of electrode. Distribution was reflected in the
normal welding process. Electrodes E1 and E2 were the I (volume) heat
capacity and configured to connect the rules of the Joule heat spots. The
amount of heat Q was balanced with the work of W when the power
was connected to link and when the connection was set up correctly.
Thermal conductive metal joint The first step was the connection
between the two sheets. Part of the heat distributed and some heat was
lost by the cooling water system.
Figure1 Welding Roll
From the picture tin Plate was connected with copper wire
electrode through the weld tin the steel melt at 230 degrees wire was
melted and prevent contamination Welding Roll. Therefore, copper wire
the groove welding roll must clean stop and check periodically, key
points of the wire stiffness effect on the nature of access. Therefore,
high-quality wire should be thoroughly tested. A wire form has changed
over time in the case of machine development. Contacted and the
related effect of electricity on a piece of steel. Only one side was
affected as a result of changes in the flow of heat means that even if
other settings were usually heat up at the point where the flow can be
seen more clearly. The best amount of electricity from the power
measured by the flow based on the maximum number of beads on a