Sunday, April 24, 2011
SEMANGAT YANG HILANG.......
petang yg tenang...tpi semangat aku dh hilang.....nk kuar umah xde semangat.....nk lepak pn xde semangat.....tah la hati nie dh kecewa sangat2.....biar la die pergi,aku perlu kan ruang untuk lupe kn die....nk tulis panjang2 kt blog nie pn dh xsemangat....sampai sini jew dulu.....:'(
Tuesday, April 19, 2011
TAK DAPAT MEWAKILI GIAT MARA KE MY SKILL KIJAL
ari nie prasaan terlalu kecewa sangat2.....aku xdpat mewakili GIAT MARA ke kijal untuk pertandingan MY SKILL....rase mcm tak dapat trima kenyataan jew....sedih sangat2...aku xdpt gi di sebabkan kedatangan x cukup jew....total kedatangan tidak hadir aku 10hari.....tpi xpe la...redho jew la..aku xboleh bersedih...sbb bulan6 nie lg penting dari tu aku kena lalui...kena gi test lesen 3G dan 3F ngan CIDB...lesen tu la penentu mase kerja aku nanti.....aku kena usaha demi masa dpan aku....
Monday, April 18, 2011
ALAMAK....!!!TAYAR PANCIT......!!!!!!
:'( adoyai.....letih la lau macam nie.....tadi nak gi klass dah sampai separuh jalan tayar plak pancit......tensyen giler la......dh la duit tinggal rm10 jew lagi......elaun pn xkuar lg.....hheeemmmm.....tadi aku terpakse patah balik ke rumah sbb pepagi bute mane ade bengkel bukak...ji kedai beli tiub moto rm7...tinggal rm7....dah la klass hari nie ade pemilihan untuk ke ajil terengganu untuk tester CIDB WELDER 3G dan 3F....rase nak nangis pn ade....xdapat gak aku nak gi test...:'( ape malang la nasib aku nie...xpe la...redho jew la...dh ujian aku trima mcm nie....dh nasib aku tertulis xdapat gi test 3G n 3F tu nk wat mcm mane....sedih nye la....sia2 aku tryning sungguh2...pemilihan nk 10orang jew....waaaaaaa..!!!!!!!!:'(
ALAMAK....!!!TAYAR PANCIT......!!!!!!
:'( adoyai.....letih la lau macam nie.....tadi nak gi klass dah sampai separuh jalan tayar plak pancit......tensyen giler la......dh la duit tinggal rm10 jew lagi......elaun pn xkuar lg.....hheeemmmm.....tadi aku terpakse patah balik ke rumah sbb pepagi bute mane ade bengkel bukak...gi kedai beli tiub moto rm7...tinggal rm3....dah la klass hari nie ade pemilihan untuk ke ajil terengganu untuk tester CIDB WELDER 3G dan 3F....rase nak nangis pn ade....xdapat gak aku nak gi test...:'( ape malang la nasib aku nie...xpe la...redho jew la...dh ujian aku trima mcm nie....dh nasib aku tertulis xdapat gi test 3G n 3F tu nk wat mcm mane....sedih nye la....sia2 aku tryning sungguh2...pemilihan nk 10orang jew....waaaaaaa..!!!!!!!!:'(
Friday, April 15, 2011
GTAW WELDING
GTAW Welding
Gas Tungsten Arc Welding (GTAW) is
frequently referred to as TIG welding. TIG
welding is a commonly used high quality
welding process. TIG welding has become a
popular choice of welding processes when high
quality, precision welding is required.
In TIG welding an arc is formed between a
nonconsumable tungsten electrode and the
metal being welded. Gas is fed through the
torch to shield the electrode and molten weld
pool. If filler wire is used, it is added to the
weld pool separately.
TIG Welding Benefits
Superior quality welds
Welds can be made with or without filler
metal
Precise control of welding variables (heat)
Free of spatter
Low distortion
Shielding Gases
Argon
Argon + Hydrogen
Argon/Helium
Helium is generally added to increase heat input
(increase welding speed or weld penetration).
Hydrogen will result in cleaner looking welds and
also increase heat input, however, Hydrogen may
promote porosity or hydrogen cracking.
GTAW Welding Limitations
Requires greater welder dexterity than MIG or
stick welding
Lower deposition rates
More costly for welding thick sections
Common GTAW Welding Concerns
We can help optimize your welding process variables. Evaluate
your current welding parameters and techniques. Help eliminate
common welding problems and discontinuities such as those
listed below:
Weld Discontinuities
Undercutting
Tungsten inclusions
Porosity
Weld metal cracks
Heat affected zone cracks
TIG Welding Problems
Erratic arc
Excessive electrode consumption
Oxidized weld deposit
Arc wandering
Porosity
Difficult arc starting
If your company is experiencing these or other welding problems
you can retain AMC to improve your weld processing. Hire AMC
to act as your welding specialist.
Gas Tungsten Arc Welding (GTAW) is
frequently referred to as TIG welding. TIG
welding is a commonly used high quality
welding process. TIG welding has become a
popular choice of welding processes when high
quality, precision welding is required.
In TIG welding an arc is formed between a
nonconsumable tungsten electrode and the
metal being welded. Gas is fed through the
torch to shield the electrode and molten weld
pool. If filler wire is used, it is added to the
weld pool separately.
TIG Welding Benefits
Superior quality welds
Welds can be made with or without filler
metal
Precise control of welding variables (heat)
Free of spatter
Low distortion
Shielding Gases
Argon
Argon + Hydrogen
Argon/Helium
Helium is generally added to increase heat input
(increase welding speed or weld penetration).
Hydrogen will result in cleaner looking welds and
also increase heat input, however, Hydrogen may
promote porosity or hydrogen cracking.
GTAW Welding Limitations
Requires greater welder dexterity than MIG or
stick welding
Lower deposition rates
More costly for welding thick sections
Common GTAW Welding Concerns
We can help optimize your welding process variables. Evaluate
your current welding parameters and techniques. Help eliminate
common welding problems and discontinuities such as those
listed below:
Weld Discontinuities
Undercutting
Tungsten inclusions
Porosity
Weld metal cracks
Heat affected zone cracks
TIG Welding Problems
Erratic arc
Excessive electrode consumption
Oxidized weld deposit
Arc wandering
Porosity
Difficult arc starting
If your company is experiencing these or other welding problems
you can retain AMC to improve your weld processing. Hire AMC
to act as your welding specialist.
TAKDIR DAN UJIAN TUHAN
sabtu 16/4/11 12:55pm....Dugaan.....aku rase pelik tol la....bulan 4 nie aku hairan betol la...banyak ujian dan gugaan yg aku dpt...rase mcm nk gila pn ade...aku tulis kt blog nie bukan nk mengeluh...tpi cuma nk luahkan prasaan jew...aku redho jew ngan ketentuan tuhan....masaalah baru yang aku dpt sal GF aku nih....nape la sanggup die tipu aku....adoi kecewa sngat2 rase....aku dh habis buat yang terbaik untuk die....tpi nape die maseh nk tipu aku lg??pasal chat kt FB tu aku dh ckp jgn on...tpi dia on chating tu diam2...die ingat aku tak tahu...aku awal2 lg dah pasang kaki....xpe la ma....tipu la sy selagi awk mampu tipu....sy hanye dpt menghitung hari jew untuk mula membenci awk.....sy dh xlarat nk kena tipu lg dh...dh terlalu banyak benda aek tipu sy....awk msj ngan EX-BF awk....msj ngan jantan lain...sbb sy syg awk sy,sy hanya bersabar....sy nk clash awk nangis...bile nk clash mcm2 awk ckp kt sy...kejam la,buat awk mcm sampah la...sampai hati la....tapi hakikatnye awk yg kejam....tipu sy mcm2...n lagi satu masaalah pasal astro....pening dh pale aku....tertunggak seratus lebih dh bil....aku xkeje skarang...still ngan GIAT MARA...harap kn alaun jew rm200 jew sebulan...nk wat keje part time xsempat kejar masa....mane aku nk cari duit nak bayar bil tu???lau tak bayar surat lawyer akan sampai kt umah aku....adoi....help me...!!!
Wednesday, April 13, 2011
DEVELOPMENT
The principles of gas metal arc welding began to be understood in
the early 19th century, after Humphry Davy discovered the short
pulsed electric arcs in 1800[1] and then Vasily Petrov
independently produced the continuous electric arc in 1802[2]
(soon followed by Davy). In his work published in 1803 Petrov
proposed the usage of electric arc in welding, having managed to
perform a simple experimental welding.[2] But it was not until the
1880s that the technology became developed with the aim of
industrial usage. At first, the practical method of carbon arc
welding invented by Nikolay Benardos was used,[3] utilising
carbon electrodes known from the time of Davy and Petrov. By
the late 1880s, metal electrodes had been invented by Nikolay
Slavyanov (1888)[4] and C. L. Coffin (1890). In 1920, an early
predecessor of GMAW was invented by P. O. Nobel of General
Electric. It used a bare electrode wire and direct current, and used
arc voltage to regulate the feed rate. It did not use a shielding gas
to protect the weld, as developments in welding atmospheres did
not take place until later that decade. In 1926 another forerunner of
GMAW was released, but it was not suitable for practical use.[5]
It was not until 1948 that GMAW was finally developed by the
Battelle Memorial Institute. It used a smaller diameter electrode and
a constant voltage power source, which had been developed by
H. E. Kennedy. It offered a high deposition rate, but the high cost
of inert gases limited its use to non-ferrous materials and cost
savings were not obtained. In 1953, the use of carbon dioxide as a
welding atmosphere was developed, and it quickly gained
popularity in GMAW, since it made welding steel more
economical. In 1958 and 1959, the short-arc variation of GMAW
was released, which increased welding versatility and made the
welding of thin materials possible while relying on smaller
electrode wires and more advanced power supplies. It quickly
became the most popular GMAW variation. The spray-arc transfer
variation was developed in the early 1960s, when experimenters
added small amounts of oxygen to inert gases. More recently,
pulsed current has been applied, giving rise to a new method
called the pulsed spray-arc variation.[6]
As noted, GMAW is currently one of the most popular welding
methods, especially in industrial environments. It is used
extensively by the sheet metal industry and, by extension, the
automobile industry. There, the method is often used for arc spot
welding, thereby replacing riveting or resistance spot welding. It is
also popular for automated welding, in which robots handle the
workpieces and the welding gun to speed up the manufacturing
process.[7] Generally, it is unsuitable for welding outdoors,
because the movement of the surrounding air can dissipate the
shielding gas and thus make welding more difficult, while also
decreasing the quality of the weld. The problem can be alleviated
to some extent by increasing the shielding gas output, but this can
be expensive and may also affect the quality of the weld. In
general, processes such as shielded metal arc welding and flux
cored arc welding are preferred for welding outdoors, making the
use of GMAW in the construction industry rather limited.
Furthermore, the use of a shielding gas makes GMAW an
unpopular underwater welding process, but can be used in space
since there is no oxygen to oxidize the weld.
the early 19th century, after Humphry Davy discovered the short
pulsed electric arcs in 1800[1] and then Vasily Petrov
independently produced the continuous electric arc in 1802[2]
(soon followed by Davy). In his work published in 1803 Petrov
proposed the usage of electric arc in welding, having managed to
perform a simple experimental welding.[2] But it was not until the
1880s that the technology became developed with the aim of
industrial usage. At first, the practical method of carbon arc
welding invented by Nikolay Benardos was used,[3] utilising
carbon electrodes known from the time of Davy and Petrov. By
the late 1880s, metal electrodes had been invented by Nikolay
Slavyanov (1888)[4] and C. L. Coffin (1890). In 1920, an early
predecessor of GMAW was invented by P. O. Nobel of General
Electric. It used a bare electrode wire and direct current, and used
arc voltage to regulate the feed rate. It did not use a shielding gas
to protect the weld, as developments in welding atmospheres did
not take place until later that decade. In 1926 another forerunner of
GMAW was released, but it was not suitable for practical use.[5]
It was not until 1948 that GMAW was finally developed by the
Battelle Memorial Institute. It used a smaller diameter electrode and
a constant voltage power source, which had been developed by
H. E. Kennedy. It offered a high deposition rate, but the high cost
of inert gases limited its use to non-ferrous materials and cost
savings were not obtained. In 1953, the use of carbon dioxide as a
welding atmosphere was developed, and it quickly gained
popularity in GMAW, since it made welding steel more
economical. In 1958 and 1959, the short-arc variation of GMAW
was released, which increased welding versatility and made the
welding of thin materials possible while relying on smaller
electrode wires and more advanced power supplies. It quickly
became the most popular GMAW variation. The spray-arc transfer
variation was developed in the early 1960s, when experimenters
added small amounts of oxygen to inert gases. More recently,
pulsed current has been applied, giving rise to a new method
called the pulsed spray-arc variation.[6]
As noted, GMAW is currently one of the most popular welding
methods, especially in industrial environments. It is used
extensively by the sheet metal industry and, by extension, the
automobile industry. There, the method is often used for arc spot
welding, thereby replacing riveting or resistance spot welding. It is
also popular for automated welding, in which robots handle the
workpieces and the welding gun to speed up the manufacturing
process.[7] Generally, it is unsuitable for welding outdoors,
because the movement of the surrounding air can dissipate the
shielding gas and thus make welding more difficult, while also
decreasing the quality of the weld. The problem can be alleviated
to some extent by increasing the shielding gas output, but this can
be expensive and may also affect the quality of the weld. In
general, processes such as shielded metal arc welding and flux
cored arc welding are preferred for welding outdoors, making the
use of GMAW in the construction industry rather limited.
Furthermore, the use of a shielding gas makes GMAW an
unpopular underwater welding process, but can be used in space
since there is no oxygen to oxidize the weld.
GAS METAL ARC WELDING
Gas metal arc welding (GMAW), sometimes referred to by its
subtypes metal inert gas (MIG) welding or metal active
gas (MAG) welding, is a semi-automatic or automatic arc
welding process in which a continuous and consumable wire
electrode and a shielding gas are fed through a welding gun. A
constant voltage, direct current power source is most commonly
used with GMAW, but constant current systems, as well as
alternating current, can be used. There are four primary methods
of metal transfer in GMAW, called globular, short-circuiting, spray,
and pulsed-spray, each of which has distinct properties and
corresponding advantages and limitations.
Originally developed for welding aluminum and other non-ferrous
materials in the 1940s, GMAW was soon applied to steels because
it allowed for lower welding time compared to other welding
processes. The cost of inert gas limited its use in steels until
several years later, when the use of semi-inert gases such as
carbon dioxide became common. Further developments during
the 1950s and 1960s gave the process more versatility and as a
result, it became a highly used industrial process. Today, GMAW
is the most common industrial welding process, preferred for its
versatility, speed and the relative ease of adapting the process to
robotic automation. The automobile industry in particular uses
GMAW welding almost exclusively. Unlike welding processes that
do not employ a shielding gas, such as shielded metal arc
welding, it is rarely used outdoors or in other areas of air volatility.
A related process, flux cored arc welding, often does not utilize a
shielding gas, instead employing a hollow electrode wire that is
filled with flux on the inside.
subtypes metal inert gas (MIG) welding or metal active
gas (MAG) welding, is a semi-automatic or automatic arc
welding process in which a continuous and consumable wire
electrode and a shielding gas are fed through a welding gun. A
constant voltage, direct current power source is most commonly
used with GMAW, but constant current systems, as well as
alternating current, can be used. There are four primary methods
of metal transfer in GMAW, called globular, short-circuiting, spray,
and pulsed-spray, each of which has distinct properties and
corresponding advantages and limitations.
Originally developed for welding aluminum and other non-ferrous
materials in the 1940s, GMAW was soon applied to steels because
it allowed for lower welding time compared to other welding
processes. The cost of inert gas limited its use in steels until
several years later, when the use of semi-inert gases such as
carbon dioxide became common. Further developments during
the 1950s and 1960s gave the process more versatility and as a
result, it became a highly used industrial process. Today, GMAW
is the most common industrial welding process, preferred for its
versatility, speed and the relative ease of adapting the process to
robotic automation. The automobile industry in particular uses
GMAW welding almost exclusively. Unlike welding processes that
do not employ a shielding gas, such as shielded metal arc
welding, it is rarely used outdoors or in other areas of air volatility.
A related process, flux cored arc welding, often does not utilize a
shielding gas, instead employing a hollow electrode wire that is
filled with flux on the inside.
kecewa sangat2 tahap gaban....!!!!
hemmm..........hari nie hari rabu 13/4...hari yg cukup sedih kecewa dan agak perit sikit......sakit otak,sakit jiwa,sakit hati nk kate kn semua ade lah....huru hara hidop aku.....esok 14/4 bermula la hidop baru aku......aku malas nk tulis panjang2 sbb pale hotak aku nie dh semak ngan msaalah...hadoi...NO WOMEN NO CRY.....tata gud nite....huh...!!!
Tuesday, April 12, 2011
banyak problem
huh...banyak tol la problem yg nak kena fikir....nak bayar astro,motor...huh...mau gila bah otak ku(tetiba tercakap lorat sabah)hahaha....bile nak di pikir kn masaalah sampai bile pn tak selesai...ape yg aku boleh buat skarang...rilekss n cooollllll...hahahahaha....yang penting semek kechek aku la tempat aku tenang kn pikiran...die pandai layan aku...hemmmm....lambat tol la rasenye nk abis blajar nih...aku nk keje plak....nk kumpul duit plak nih...cepat la wahai masa berjalan....aku perlu kan WANG...!!!hahahahahah.....nk keje...!nk keje...!nk keje...!!
Friday, April 8, 2011
kebosanan
hari nie hari sabtu...bosan tahap gaban,xtau nk wat pew....ishhh....nk msj ngan ,my cweet heart die sibuk...duk trmenung jew la lwb nye....online facebook pn bosan...sekarang nie duk layan adik aku layan KL drift...ape2 jew la....layan jew la ape yang ade...daripada duk termenung xtentu pasal,baik haku layan citer tak faedah tu...hahahahaha
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