8 results listed
The iron and steel (I&S) sector plays an active role in
the world economy with a market share of an estimated $1,715
billion. As in other sectors, qualified production is a crucial step
for international trade for I&S sector. For example; between the
years 2013-2015, two major steel-producing countries of Turkey
and Germany have reacted differently against the low quality
steel sale from China. While the poor quality steel produced by
China has no place in the German market, it has played an active
role in the Turkish market. From this point of view, the effects of
the accredited laboratories on the sectors they serve were
examined by means of the iron and steel industry. The trend of
the accredited laboratories in Turkey serving the iron and steel
industry has been investigated in detail. In addition, the results
were compared with Germany.
International Iron & Steel Symposium
UDCS
Betul ERCAN
Yasin Akgül
Alper Incesu
Muzeyyen ABUNAZ
Bulent AYDEMIR
Murat KAVRUK
Testing laboratories need to verify their
test procedures and testing capability for
reliable results. In this study, equivalent samples
are prepared by steel rod material. Randomly
selected test samples having specified dimensions
are sent to the participant laboratories. Then,
they are tested and results are analyzed
according to previously defined parameters.
Each laboratory applied tensile test on the
samples according to procedures given in ISO
6892-1 standard. Test results are evaluated
according to same procedures explained in
related standards by the participant
laboratories.
TUBITAK UME Force Laboratory being the
pilot laboratory collected to the all evaluated
results including associated measurement
uncertainties. Then the collected results
evaluated according to ISO 17043:2010 are
reported by each laboratory as a part of the
proficiency test report. Z scores of the
participant laboratories are presented.
International Iron & Steel Symposium
UDCS
Cemal VATAN
Bulent AYDEMIR
Ufuk KURU
Haldun DİZDAR
In this paper, some information about impact testing
method and its applications in steel industry are presented, in
additionally, it has been given knowledge related to uncertainty
analysis of Charpy impact test, also application of sample uncertainty
calculation according to ISO 148-1:2016 standard intended for
laboratories that implement this test and review the measurement
results.
International Iron & Steel Symposium
UDCS
Haldun DİZDAR
Bulent AYDEMIR
Cemal VATAN
Metallic material producers, users and those who work
to determine the properties of materials, most commonly use
tensile testing. As you know, the tensile test of metallic materials
at room temperature is done according to the ISO 6892-1
standard. The tensile testing laboratories provide the reliability
and worldwide validity of the test results through accreditation.
In this study, after briefly discussed important issues of the ISO
6892-1 standard, laboratories involved in the accreditation system
in Turkey will be discussed. The number of laboratories
accredited by the same standard in Europe is determined. As a
result, the locations of the test laboratories in our country will be
compared according to their global competitors and the shares
will be presented for the future road map of the laboratories.
International Iron & Steel Symposium
UDCS
Bulent AYDEMIR
In this study, it was investigated whether there was a
correlation between the production of steel and the number of
accredited laboratories of countries. For this purpose, the
metallic material competence (MMC) coefficients of countries
were calculated. According to the results, Germany, known as a
quality steel producer, was the country with the highest
coefficient. Moreover, Germany's made in country index has the
best value in other countries. However, China, which is the
market leader in steel production, was a country with the lowest
MMC coefficient among the compared 10 countries. It was
foreseen that countries should focus on non-destructive tests in
order to become quality steel producers. This study for the iron
and steel industry was thought to be a guide for other sectors.
International Iron & Steel Symposium
UDCS
Alper Incesu
Yasin Akgül
Betul ERCAN
Muzeyyen ABUNAZ
Bulent AYDEMIR
Murat KAVRUK
As a conformity assessment activity, testing is a crucial step in iron and steel industry. The characteristics and quality of the material are determined by the test. Manufacturers who manufacture in the sector and manufacturers who buy products make the acceptance of the material according to the results of the test. The reliability of test results is ensured through accreditation. In this study, the scope of the accredited laboratories in Turkey serving the iron and steel industry has been examined in detail. These results are compared with the same sector-based laboratories that are accredited in Germany. As a result, proposals have been made for future plans of test laboratories serving the iron and steel industry.
International Iron & Steel Symposium
UDCS
Murat KAVRUK
Bulent AYDEMIR
In iron and steel industry, force measurements play an important role in areas such as pressing, rolling and extrusion, both in process control and in development of reproducible similar products and quality. In order to obtain accurate and reliable measurement results, it is needed to perform traceable calibrations of devices used in measurements. Calibration of devices should be performed according to ISO, ASTM, and TS standards. Using inappropriate equipment will result in production losses and cost increases that will be reflected in product quality. For this reason, calibrated devices should be used in measurements; also these devices should have acceptable range of deviation. In this study, usage area of force measurements in iron and steel industry and importance of certifying performed measurements have been examined
International Iron & Steel Symposium
UDCS
Haldun DİZDAR
Bulent AYDEMIR
Cemal VATAN
Today, as the current standard tensile test for metallic materials ISO 6892-1 standard are used. The English version of the standard in 2009 and the Turkish version in 2011 were published. The English version was renewed in 2016. In this study, we aimed to summarize the major changes made in this standard. In this way, it is aimed to be transmitted detailed and accurate information for related person.
International Iron & Steel Symposium
UDCS
Bulent AYDEMIR