ดาวน์โหลด All Proceeding - AS Nida

piece of iron metal by the spec or the spec of the can thickness great
power it was the lowest or the power to cover not tear when tested by
connecting them with the power to set the 2 / 3 of the minimum value
for the production.
Pareamas Chutima has the meaning of 3k Factorial Design
that the design factor consists of three levels .The symbol of the factors
to be represented by a capital letter Low, Medium, High may be
replaced with k 0 (Low) 1 (Medium) 2 (High) by first of symbol mean
level of factor, for 3 2 number 00 mean experiment with factors that
both A and B are low. Refers to experiments with a low factor A and B
are moderate.
Figure 2 Co-factor for the experiment design 3 3
Model adequacy checking
Equation Y ij = µ + Γ i + ε ij
µ = Average
Γ = Influence factors that cause
ε = discrepancy
In the design of experiments often assume in the analysis of
y (Variable) were normal distribution Therefore, y will be distributed to
the ε has a normal distribution and must be distributed independently.
ε ij ~ NID(0,σ 2 )
Verified independently by scatter plot then distribution
function of the point on the chart that represents the data format that
was independent or not. and variance stability verification by margin of
error scatter plot in factors at each level. If the shape of the distribution
of the information out was not the nature of the increase or decrease of
variance Indicate that information is variance stability.
Other research data showed that the research on multiple
tasks such research such as “Finding the optimum conditions for coating
of lacquer on a piece of tin coated steel by means of experimental
design” by Tosapol Kieatchareanpol . Principles of experimental design
and analysis of the experiment was to study the four factors were types
of lacquers, Lacquer weight per area, Temperature, incubation time. By
20
examining six types of lacquer coating were flexible testing, scratch,
rub test, resistance to penetration of water test, strength of adhesion
between the lacquer and metal texture test and delamination of the
lacquer from the heating sterilization test. The results can be Summary
of optimum conditions Z lacquer weight 8-9 grams per square meter
curing temperature 250 o C and 13 minutes for incubate. “A Study of the
TIG welding that influence the properties of welding for stainless steel
pipes tesis” By Sutiwat Mahakaporn Experimented by welding factor
were Electricity, Voltage,welding speed and set of factors at high and
low levels in the experimental conditions 8 types for try to connect
using the value of the specified factors pipe from the experimental
results to Mechanical testing. Measured tensile strength of welds and
expansion of the pipe diameter test pipe task and see structure of the
weld metal Then the results were analyzed with the structure of weld
metal .Analyze test results and trial And “Factors that were appropriate
for polyester powder coating, spray cans on the welds” tesis By Staporn
Pimsarn. The experimental design was used to study the appropriate
factors for polyester spray on the can welding. And Utumporn
Pongudom study of problems in the factory radiator. There were several
reasons for the need to fix the problem of waste and the impact on costs.
Most of the waste pipe related to the aluminum roll forming process to
make raw material radiator. Researchers have analyzed that the main
problem was there were two reasons were forming method and setting
machine. The first problem caused by the size of the forming of a sheet
of aluminum do not meet requirements and scale adjustment of the
machine reading the uncertainty due to scale too rough. The researchers
modified the procedure manuals, standard operational. The second,
problem factors were welding speed and welding voltage. Using 3 2
factorial Design for determine the appropriate level as a factor in setting
the standard equipment. From experiments using the manual operation
and set the appropriate connection speed 106.1 m / min Include equal
access to electrical power as 268 voltage It can reduce the waste from
9.62% to 2.71% is also a have standard factory more.
This study aimed to investigate the factors that are
appropriate for welding cans, food packaging and to reduce losses to be
used as the benchmark in product 603x700 process control. The four
factors were studied electrical, pressure springs, copper wire, size, area
of overlap of steel by examining four types of welding are Rip test
,Ball test ,post weld test ,stretch weld test