KONSULTASI HOT DIP GALVANIZE DI INDONESIA

KONSULTAN, FABRIKASI BAJA KONSTRUKSI, SIPIL, JEMBATAN, PERGUDANGAN, MUR BAUT, TOWER LISTRIK, TOWER PLN, BANDARA, INSTALASI LISTRIK, PANEL MDP SDP, ASPAL JALAN RAYA, PENGuRUKAN TANAH, PENGADAAN ELEKTRONIKA, ELEKTRIKEL, BAHAN BANGUNAN, FURNICER, PAGAR BESI, ATAP GALVALUM, PEMBUATAN PABRIK GALVANIS DAN JASA HOT DIP GALVANIZE

PT. PELANGI KRIAN GALVANIZE

Oleh Ahmad Tohir, 081335310019 / 081515543935, / 081515543935

HOT DIP GALVANIZE

Baja adalah bahan yang menarik. Hal ini namun dapat terkorosi oleh elemen dan pencemaran udara. Korosi bertanggung jawab atas lebih dari 90 miliar euro dari kerusakan setiap tahun di Jerman saja. Hot-dip galvanizing melindungi baja dari korosi dengan cara yang ekonomis dan ramah lingkungan dan sangat meningkatkan kehidupan pelayanan perlindungan korosi berlangsung selama beberapa dasa warsa.

Hot-dip galvanizing melibatkan mencelupkan baja ke dalam zinc cair dengan temperatur 450 °C. Seng dan baja kemudian akan bereaksi dengan satu sama lain. Sebuah paduan besi-seng akan terbentuk pada permukaan baja. Senyawa ini tak terpisahkan dari seng dan baja menciptakan perlindungan, yang jelas berbeda dari semua proses lainnya. Hot-dip galvanis permukaan tidak hanya dilindungi dari angin dan cuaca tetapi juga optimal dilindungi dari paparan mekanik - selama beberapa dasa warsa. Dalam kondisi normal, hot-dip galvanizing akan melindungi terhadap korosi hingga 50 tahun dan umumnya lebih dari 25 tahun dalam kasus di daerah tingkat korosif yang lebih tinggi.

Keuntungan

Jangka panjang perlindungan korosi, Tinggi tingkat ketahanan mekanik, Sempurna perlindungan serba juga di rongga dan tepi, Katodik korosi perlindungan, penampilan menarik, sangat ekonomis, pemeliharaan bebas, Baik eko-keseimbangan, ramah lingkungan proses.

The Corrosion Problem

When exposed to the atmosphere, all metals have the natural tendency to revert to the lesser energy state of ore. In simple terms, this natural phenomenon is corrosion, and is most commonly seen as iron ore or rust. Steel is an excellent building material – it is readily available, fully recyclable and has a high strength-to-weight ratio, low environmental impact, and long-term durability. However, it is inevitable steel corrodes.

Though corrosion may be more visible, all building materials (concrete, plastic, wood, etc.) diminish and decay over time. Steel is just more honest and transparent – alerting you to any problem areas rather than hiding them until it is too late. One catastrophic issue event due to unknown issues can be extremely costly – monetarily as well as in loss of lives. Therefore, the answer to steel corrosion is NOT to use other building materials, rather to adequately protect exposed steel to minimize and delay the process with a coating such as hot-dip galvanizing.

Metallic corrosion is costly; nearly $423 Billion annually in the US, and about one third of that is noted as avoidable corrosion; thus, that cost could be eliminated if proper corrosion protection methods were in place. Unfortunately, one of the biggest corrosion offenders is public infrastructure which means we all pay (taxes) for the lack of adequate planning. The long-held attitude in public construction of cheapest bid wins has been proven flawed. Building with the cheapest method initially often means greater costs in the future – costs public budgets rarely account for nor have the means to consume. .

Namun,However, the cost of corrosion is not just financial. Beyond the huge direct outlay of funds to repair and/or replace corroded and/or decaying structures are the indirect costs (natural resources, potential hazards, and lost opportunity). When a project is constructed with a building material not able to survive its environment for the length of the design life, natural resources are needlessly consumed to continually repair and maintain the structure. Wasting natural resources is a direct contradiction to the growing focus and desire for sustainable development to benefit future generations.

In addition to the waste of natural resources, building structures that cannot sustain their environment can lead to hazardous situations. Accidents caused by corroded structures can lead to huge safety concerns, loss of life, resources, and more. One failed pipeline, bridge collapse, or other catastrophe is one too many and leads to huge indirect costs (more traffic delays, loss of business, etc.) and public outcry. Depending on which market sector (industrial, infrastructure, commercial, etc.) is being considered, these indirect costs may be as high as five to ten times the direct cost.

How Long Does HDG Last?

Hot-dip galvanizing (HDG) is used to protect steel from corrosion in a variety of environments, including air, water, chemicals, and soil applications. Galvanized steel’s performance in each of these applications is dependent upon a unique set of corrosion variables. The information in the subsequent pages details what variables impact the coating’s performance and how long it will last in the given environment. To learn more, view the Specifier’s Guide.

Most commonly, hot-dip galvanized steel applications are in the atmosphere or open air. In atmospheric applications, hot-dip galvanized steel naturally exposed to wet and dry cycles which are crucial to the development of a series of films on the zinc surface known as the patina. The patina is stable and non-reactive unless exposed to aggressive chlorides or sulfides, and is a key component to galvanizing’s long life. A number of independent and industry tests of galvanized steel samples have been performed over decades in industrial, urban, rural, and marine environments to determine the time to first maintenance in each environment. It is important to note the data represented on this site about galvanized steel’s performance is based on actual performance in the field, and not on accelerated testing methods. Manufacturers of many other corrosion protection systems use these tests to claim their products perform as well as hot-dip galvanized steel based on accelerated testing, namely salt spray tests. However, salt spray tests do not allow the zinc coating to go through the natural wet and dry cycles required to form the zinc patina

Cost of Galvanized Steel

The estimated annual cost of corrosion is a staggering 3% of the US GDP, and with tighter state and federal budgets, the impact is being felt more and more. The direct life-cycle cost of maintenance due to corrosion for any one project is 2-5 times the initial cost, while indirect costs are estimated at 5-11 times the direct cost of repair. .

The growing corrosion problem in North America and associated costs make the selection of a corrosion protection system for your project critical. However, too often the only cost analysis performed when a project begins is initial cost. Life-cycle cost (LCC) is a more complete analysis as it considers the total cost over the life of the project (initial + maintenance).

Many specifiers have the perception hot-dip galvanizing is cost prohibitive on an intial cost basis. However, due to regular process improvement over the past ten years, hot-dip galvanizing has steadily become more competitive (and often less expensive) on an initial cost basis than other corrosion protection systems. Furthermore, because galvanized steel requires no maintenance for 70 or more years in most environments, it is often two to six times more economical on a life-cycle basis, i.e. over the expected life of a project.

Because projects are often complex and comprised of different steel sizes and quantities, your local galvanizer is best suited to assist you with pricing for your specific project. Find a galvanizer now. However, the American Galvanizers Association (AGA) has developed an online LIfe-Cycle Cost Calculator (LCCC) that automates the calculation found in ASTM A 1068 and allows you to compare the initial and life-cycle cost of hot-dip galvanizing to 30+ other corrosion protection systems. The galvanizing cost calculator allows you to input the specific parameters of your project in three quick screens, and then provides a customized, printable comparison of initial and life-cycle costs of galvanizing and your selected corrosion protection system

PEMILIHAN ZINC

Zinc yang dapat di gunakan untuk hot dip galvanis adalah zinc yeng memiliki kadar minimal 99.85 yang di pasaran kemurnia zinc maksimal pada 99.955

1. zinc produksi australiya Nyrstar

2. zinc produksi jepang

3. zinc produksi Korea dengan simbul KZ

4. zinc produksi china ( hati2 cari grade yang paling tinggi )

5. zinc produksi india ( hati2 cari garde yang paling tinggi )

6. zinc produksi lokal indonesi ( hati2 lebih baik jangan karena terbuat dari bekas dros dan sisa-sisa baterai dan kadar aluminiumnya sangat tinggi )

PEMILIHAN ZINC ALLOY

produksi hot di galvanis memerlukan pewarana hasil produksi hot dip galvaniz dangan mencampur alumnium, tetapi harus sangat hati2 karena sifal dari Al adalah titik cair lebih tinggi dari zinc dan berat jenis Al lebih ringan dari zinc,

sehingga apabila tidak sesuai maka akan terjadi hasil dari galvanis adalah permukaan hot dip galvanis pada baja akan pecah pecah seprti tanah kekeringan,

PEMILIHA BAJA UNTUK KETTLE ZINC
Pembuatan bejana zinc harus diperhatikan ke empat komponen yang terkandung dalam bejana tersebut yaitu.
1. C = max 0.08% (carbon)
2. Mn = max 0.5% (mangan)
3. P = max 0.02% (fospor)
4. S = Max 0.02% (belerang/sulfur)
apabila kandungan bejana ketel zinc lebih dari ini akan timbul reaksi kimia pada saat kondisi panas dan zinc mencair akan berakibat lebih cepatnya pengikisan dinding bejana ketel tersebut karena reaksi kimia zinc.
apabila anda kekurangan biaya untuk impor kettle yang mana ada beberapa pilihan untuk menentukan kettel sbb
1. produk dari W.PILLING german
2. West tern australia
3. china wuxi
apabila membuat sendiri bahan dari indonesia asli maka perhatikan komposisi bejana baja seperti di atas. yang pernah saya teliti dari informasi sertifikat besi di supplyer indonesia yang paling mendekati adalah
1. ASTM A36 dengan komposisi C 0.026%, Mn 0%, P0.04%, S0.05% (c=meragukan, p=over, s=over)
2. untuk kawat las SMAW B10, C=0.10%, Mn=0.39%, P=0.016%, S=0.008 ( OK)
3. penanganan pengelasan karean bejana ketel tebalnya 50mm maka pengelasan agar tidak terjadi retakan karena perbedaan panas yang signifikan maka plat bejana yang akan di las harus di panaskan terlebih dahulu agar tidak terjadi retakan pada pengelasan.

PEMILIHAN KONSULTAN
Pemilihan konsultan harus hati hati karena apabila belum pengalaman anda akan kecewa hasilnya maka dari itu pilihan terbaik ada kamilah yang cocok untuk anda pilih untuk anda jadikan konsultan, karena kami
1. mengetahui dan mengalami sendiri proses produksi dari nol pengetahuan
2. kami mengetahui untuk bekerja yang evektif, aman, dan bermutu
3. kamilah yang mengetahui dasar pekerjaan hot dip galvanis dan alasan2nya
4. kami bisa merancang hot dip galvanis plant sesuai dana yang ada miliki.
5. kami sudah berpengalaman membuat plant galvanise, dan konsultan
6. anda pasti puas jaminan kami, dan kami terus membimbingnya hingga bisa