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Engineering   Fabrication   Maintenance

hume-steel-fabrication

Engineering   Fabrication   Maintenance

By nothingbutnet, Jan 15 2018 10:06PM

Steel is a metal alloy of iron with a broad range of applications, including the manufacture of metal tools and use as a sturdy construction material. Many of these purposes require the steel to withstand significant wear and tear, sometimes requiring the material to be hardened and tempered in order to perform as intended. This process is typically performed by professionals in industrial facilities dedicated to the purpose, but you too can harden and temper steel with the correct tools and a smidgen of experience. Here's what you would have to do:


1. Start With The Right Steel


Contrary to what you may believe, not all steel can be hardened. Steel hardens when the carbon in its composition crystallizes, much like how graphite or coal turns into diamond after significant exposure to the heat and pressure beneath the earth's crust. This means that if your steel doesn't have enough carbon, there is nothing to crystallize and you cannot harden it in the manner described below.


In general, pure steel requires a carbon content of at least 0.6 percent to harden effectively. Steel meeting this criteria is commonly referred to as high-carbon steel or tool steel. In addition, steel alloys such as silver steel and gauge plate steel have enough carbon in them to effectively harden.


Medium carbon steels, with a carbon content in the range of 0.4-0.55 percent, may be hardened somewhat but must be alloyed with another material to really make an impact. Mild steels with less carbon than that cannot be hardened directly, but they can be coated with other materials to increase their hardness. This process is called case hardening.


2. Heat The Steel


First, slowly heat the entire piece of steel that you're trying to harden. Then, focus on the area of steel that you want to harden, such as the point of a screwdriver, until it begins to glow red hot.


3. Quench The Steel In A Fluid


This is the step where you dip the steel into a liquid to "quench" it, or cool it off nearly instantaneously. The liquid you use varies depending on the chemical composition of your steel. Oil is a popular option if you're not sure exactly what's in your steel, with vegetable oil, mineral oil, cottonseed oil, and whale oil all viable options. You can also use plain water, but oil cools the steel more slowly (meaning less cracking) while offering just as much hardening potential.


Most modern steels are considered complex steels, meaning that they are especially prone to cracking if quenched too quickly. If the metal you are hardening is of a modern vintage, you should definitely use oil.


You also need to ensure that bubbles do not form while you are quenching your steel. Bubbles can slow the cooling process while introducing undesirable soft spots on your metal, so try agitating your liquid of choice before they can form.


Salt water pops bubbles faster than fresh water does, making it one of the fastest quenching liquids you could use. However, its sodium content will cause your metal to corrode much faster than other options, so be sure to rinse it off immediately if you decide to use it.


Safety precautions should always be taken when using your quenching liquid. For instance, oils are prone to causing spatters, fumes, and spills that may quickly turn into fire hazards if left unattended.


Glycol polymers may be mixed into water to create a quenching liquid acting as a happy medium between the corrosive potential of water and the fire hazards of oil. How fast it cools your steel depends on the amount of glycol you mix into the solution. The ratio must be monitored closely to ensure consistent results, though.


Finally, cryogenic quenches may be used to eliminate the possibility of soft spots forming while simultaneously ensuring that your steel becomes as hard as possible. This is only an option for high carbon steels.


4. Clean The Steel


If you used something other than water to quench your steel, water may be used to rinse it off. Otherwise, an emery cloth or comparable light abrasive may be used to clean it.


5. A Second Heating


The second heating is not as intense as the first one and serves primarily to temper the steel against the brittleness created by the hardening process. The heating may take place in a furnace or chemical bath (oil, lead, and potassium nitrate are all suitable). Your steel will become softer but tougher the more you heat it in this stage.


Your steel will change color as it heats up, starting with light straw at around 200 degrees Celsius up to purple at 300 degrees Celsius. These colors serve as a useful guide for when to take your steel out, but remember that certain alloys must reach higher temperatures to achieve each color.


6. Cool The Steel


You can cool the steel quickly or slowly this time, but metals subject to becoming brittle after tempering should only be cooled slowly. The method you choose will impact the final properties of your steel.


By nothingbutnet, Dec 15 2017 04:25AM

Stainless steel is rapidly gaining popularity in a variety of home decor applications as its shiny appearance compliments a variety of interior designs. The metal is also an excellent choice for your plumbing system because it offers numerous advantages over the materials typically used in the industry. Here are the top five reasons to utilize stainless steel fabrication on your plumbing system.

1. Long Term Value


Stainless steel will never rust or corrode the way that other metals do, giving it a very long lifespan unmatched by other materials. This means that you can use it in your bathroom, car wash, or garage drains and not worry about replacing it for years at a time.


Once installed, stainless steel also requires little regular maintenance. This ensures that you get your money's worth out of any stainless steel plumbing system you purchase.


2. Heat and Fire Resistance


Many components of your plumbing system are regularly exposed to heat, including your water heater, boiler, hot water tank, and the valves connecting the entire system. If you regularly clean your dishes or wash your hands with hot water, your kitchen sink is also subjected to heat on a daily basis. Heat can distort most metals, but stainless steel fabrication will look and perform exceptionally well even after prolonged heat exposure.


This is also a consideration if your home ever catches on fire. Nobody wants to consider the idea that their house could go up in flames, but it is nice to know that a stainless steel plumbing system will be able to mitigate the damage if the unthinkable ever occurs.


3. Corrosion Resistance


Corrosion was discussed briefly above, but it's also the root cause of many clogging issues that can shut down your entire plumbing system. Grease, foreign objects, and other debris are supposed to glide through your smooth pipes in order to exit your home, but corroded pipes are no longer as smooth as they are supposed to be. The detritus now has an easier time becoming trapped in your plumbing system, generally requiring a professional plumber and a large bill to repair. Since stainless steel fabrication is resistant to corrosion, your pipes will always be as smooth as they are supposed to be, significantly reducing your chances of a crippling clog.


Stainless steel is also unaffected by acids, making it an excellent material for grated and linear drains in potentially acidic environments such as your car wash or garage.


4. 100 Percent Recyclable


Stainless steel is considered a "green" material because it can be melted down and used again when it is time to replace it. In fact, over 50 percent of the current stainless steel supply is derived from stainless steel products that were melted down in the past. This means that excessive mining is not required to produce stainless steel fabrication, establishing it as an environmentally-friendly option for your plumbing system.


This also means that there is no need to throw out your stainless steel plumbing fixtures when you are done using them. Instead, you can sell them as scrap metal to recoup some of your initial investment while simultaneously continuing the environmentally friendly cycle of stainless steel.


5. Visual Appeal


Stainless steel's shiny luster has a visual appeal that perfectly complements modern designs, improving the appearance of nearly any space it is used in. Home buyers enjoy the aesthetics offered by stainless steel fabrication, so the material can actually help you fetch a better price for your home if you ever decide to place it on the market.


In fact, the metal has established itself as the go-to material for a variety of industries outside of plumbing, including the food, energy, medical, construction, and automotive fields.


Clearly, stainless steel fabrication is a great material to make a plumbing system out of. Between its durability, heat and corrosion resistance, recyclable nature, and desirable appearance, you should really be questioning any plumbing system that isn't using this versatile metal.


By nothingbutnet, Jun 7 2017 01:09AM

Although the concrete polishing industry is relatively new, it is developing at a rapid pace. It is only recently that professionals are focusing on processing methods, such as concrete grinding and polishing, although they have been performed for about 10 years. These professionals include -


-Engineers

-General Contractors

-Property Owners

-Interior Designers

-Architects


People who have researched with the aim of understanding these methods, are being richly rewarded as the market continues to expand.


Birth Pains


New industries also face obstacles which must be overcome. Contractors who are just entering the concrete polishing business Melbourne, believe that it is limited to the laying of abrasives over concrete. The process however, is quite technical and involves many variables. Without the necessary experience, the desired results may not be achieved by the contractor. They must understand the ins and outs, so that they can adequately overcome any obstacles which may be presented.



Concrete Grinding in Melbourne is a Big Process


A lot of terminology is misused, since the industry is in the stage of infancy. 'Concrete Polishing' is a mechanical process by which the concrete surface is cut or refined, to reach a desired result. Multiple abrasive agents have to used appropriately within the grits, to create polished concrete.


Certain methods can affect the low, medium or high gloss of sheen which can reveal itself within the honing and grinding category, but has not gone through the same steps as the process of concrete polishing.


Categories and Processing Methods


Ground Concrete - This is the lowest category of processing methods on concrete surfaces. Grit abrasive from about 50-grit resin and beneath, is referred to as a 'grinding step'. This 'ground concrete' surface appears to be 'flat', as it has a low sheen and no reflective quality.


Honed Concrete - This type of concrete surface uses a method known as a 'honing' method, which is any kind of grit abrasive ranging between 100-grit resin to 400-grit resin. The result will be a surface with a low, medium or high quality of sheen, and will appear to have a slight reflection.


Polished Concrete - This is the highest category of methods used by concrete polishers. A 'polished concrete' method is any grit abrasive process which is at least 800-grit (usually 1,500 to 3,000). The resulting surface will have a mirror-like reflection, as well as a glass-like finish.


The Variables


The 3 processes of grinding, honing and polishing are more technical than most people realize. Several variables are involved, which affect the end results of each process or method. The contractor may be able to control the results in some cases. Those within the contractor's control include the equipment quality, steps and actions, the speed at which the steps are taken and the type of abrasives to use.


The flatness of floors, levellers, and concrete mix design are outside of the control of the contractor. A professional craftsman should know how the variables work and how they should be used, in order to influence the results.


Residential Surfaces - In the entire process, one of the most crucial variables is the concrete. In residential projects, the concrete mix usually has a low PSI (2,500 or less), and that has been hand-troweled. If the PSI is lower the concrete will not polish up as well, as its surface will be more dense and hand-troweled, resulting in a lot of highs and lows in the surface.


The professionals also should have a high level of expertise in civil engineering Melbourne, especially if a high level of traffic is expected in the concrete area. For driveways to be durable, they have to be properly prepared with a great deal of skill. This is available by using REO bars, which are designed by metal fabricators Melbourne. With a steel fabricator, the concrete will be stronger overall, as the bars can withstand more abrasion and weight.




Commercial Surfaces - The concrete mix used on these surfaces have a higher PSI (from 3,500 upwards). It is machine-troweled in open areas, and hand-troweled in the corner and tighter areas. Concrete with a high PSI will polish up better, as a result of its density, and will have less highs and lows.


A contractor will be able to achieve the desired results, if beforehand they know how a concrete slab is required to and will 'polish up' a specific setting. The customer will get a better floor at a lower cost and the contractor will receive great reviews and referrals.


The outcome may not necessarily be the same because 2 contractors are using the same type of grit. It is therefore important that contractors take the necessary time to research and learn as much as possible, about these methods and processes, so that they can achieve the ultimate concrete processing goals.




By nothingbutnet, Nov 17 2016 02:32AM

Over time, floors get scratched, cracked, discoloured and lifeless. What was once shiny will inevitably become dull. When this happens, homeowners are often torn between keeping the old and bringing in something new. Both have their own pros and cons. One of the most popular options is concrete resurfacing which allows the old to stay while creating fresh look.


Concrete Resurfacing Explained


We are living in an age of consumerism where people have gotten used to buying and discarding items on a regular basis. Instead of fixing broken things, we simply throw them away and look for the latest products to replace them. Floors may indeed be replaced if they are no longer viable but otherwise it may be wiser to have them restored.


By choosing this path, you can have stunning floors with minimum fuss. The contractor will simply coat the old with a thin overlay made from cement or polymer. This hides the damage and creates a perfect surface. It's also a good method for concrete leveling, repair and polishing.



The Benefits of Floor Rejuvenation


If you hire a concrete polishing Melbourne contractor, you can look forward to the following:


1. Affordable rates. The days of never-ending delays are over. With affordable rates, homeowners can get things started immediately without worrying about the expenses. The materials needed are relatively few and workers can finish the job rather quickly. Expect to shell out about a third of the cost of a new flooring.


2. Effective solution. This approach can be applied to virtually all kinds of concrete in residential and commercial establishments alike. If you want your office to be more presentable to clients or you wish for your home to look great for guests, then this is the way to go.


3. Multiple choices. Restoration doesn't mean you're stuck with the old look. It is possible to get a new design with your choice of colours, finishes and textures. There is an endless variety of combinations that you can try. Simulate the appearance of marble or other more expensive materials. Add a non-slip coating for safety. Create custom patterns that suit your personality. It's time to turn your ideas into reality.


4. Efficient path. Concrete leveling will not be a problem. The products used will spread evenly by themselves and workers will double-check just to make sure. In one go, all of the unsightly cracks will be hidden from view. The chipping and discoloration will no longer be visible. The process will be quick and easy. It's certainly more convenient than having to break up the old floor just to install a new one. For those who want minimal household disturbance, this is the most efficient path.


5. Durable installation. Due to their position, floors are quite prone to wear and tear. People are always walking all over them, heavy items get dropped on the surface, and furniture leaves marks as they are moved around. These should not be a cause for concern with slab rectification. Owners can be assured of long-term protection from damage. There will be special coatings on the surface to keep things looking flawless and shiny.


6. Stress-free maintenance. All it takes to maintain the concrete floor is an occasional application of a protective stain. Do this once a year and you should be good to go, or twice if you are feeling particularly motivated. This process is quick and easy. It's definitely a less intensive chore compared to the maintenance requirements of other types of surfaces.


7. Excellent returns. As renovation costs money, owners are justified in wanting the cost to pay dividends. Those who call on concrete polishing Melbourne professionals can be assured that their money is well-spent. The rooms will instantly look so much better and the people who use them will be safer as well. Non-slip coatings reduce the chances of accidents around the house so there are less worries about painful and costly injuries. Everyone who sees the new floors will be amazed at the transformation. For business owners, this is particularly important as first impressions can make or break deals.





What to Do with Damaged Floors


While slab rectification is powerful, it has its own limitations. This is not recommended for floors which are heavily damaged. Those with large cracks and holes will not be so easily repaired by pouring a layer of concrete on top. Heavy grinding is required. There might even be structural issues underneath that require a massive overhaul.


Hiring a Concrete Polishing Melbourne Specialist


It's a delicate job with much at stake. Be sure to give it to a contractor with excellent reputation and decades of experience for best results. There are quite a few companies in Melbourne offering the service so take your time checking their backgrounds. Compare their rates, reviews, warranty, and overall value for money.



Read more on concrete polishing in Melbourne here.

By nothingbutnet, Oct 26 2016 10:44PM

In any construction project, strength and durability are the essential features verified engineers from all over the world look for. This is mainly the reason why structural construction specialists prefer using steel for their projects. Everyone wants a building--be it residential, commercial or industrial--that can stand for a long time despite all the extensive damages it receives time and again. This not only applies to construction projects but practically all products. One way to ensure that any product or building can withstand the test of time is to use quality materials during the building process.



A Tough Internal Framework



There is a wide array of materials needed for various commercial, residential and infrastructure applications. Different tools are needed for different operations however, there are equipment which are commonly used for all types building project.



The very first thing structural engineers check is the support system of the infrastructure. It is highly necessary to have a strong understructure as it holds up the total weight of the finished project. The stronger the materials used, the higher the level of security and longevity. Engineers will always have to adhere to the standards given for the materials to be used.



For any construction project, the bracing system serves as the backbone for the overall structure. Using substandard reinforced masonry agent is guaranteed to make the whole project fail spectacularly. Each part serves different purposes and the stronger each individual component is the stronger the final result will be.



Securing the Bracing System



A bracing system ensures that the project can handle considerable weight for a longer length of time. This responsible for the load distribution, control of the dimension, and control main beam buckling. For this, rod bracings are used.



Hume steel fabricates high-quality rod braces for commercial, residential, and infrastructure purposes. All of the items are created in accordance with Australian standard and guidelines. The bars follow the

standard length of up to 7m which can have either a painted finish or a hot dip galvanized finish depending on your preference.



The standard 16mm round bar is used to detach the top and bottom layers of concrete slab mesh. It can also have whichever finishing you prefer to have. It is designed by verified engineers and fabricated with the utmost attention by experienced steel fabricators.


Deformed Reinforcement Bar Fabrication



Another reinforcement steel product which Hume Steel creates is the deformed bar. However, unlike its name it will no way deform the appearance of the building. It is mainly used to strengthen fabric sheets and metal mesh. This used for several kinds of applications which may have certain specifications to meet. To cater to the various uses for deformed reinforcing bars, we offer customized fabrication. However, we only offer bars approved Australian Standards which come in these metric sizes: M10-12-16-20-24-30-32



Top Grade Threaded Rod



This rebar is designed to secure and space clamp types, and mainly for tension. It is also known as a stud, and it comes in two forms: full-bodied studs and undercut threaded rod. It is available in metric thread custom lengths. We also fabricate custom-order threaded rod and even all-threads.



First-Class Starter Bars



Derived from D500N reinforcement bar, better known as REO is designed to tie concrete walls to slabs. These can be taken from deformed bars, and then cut and shaped to get the preferred design. Our steel fabricators can bend the starter bar upon your request.



Our products are designed by licensed engineers and certified metal fabricators. We also offer customization which meets the conditions of AS/NZS 4671 to guarantee that you have nothing short of sterling quality.



Let The Professionals Take Responsibility



Steel fabrication is a serious matter. Your safety and comfort are at risk. No one wants to have, or cause injuries. Which is why it is imperative that you call on experienced metal fabricators. Hume Steel is more than happy to answer your steel fabrication needs. All you have to do is call 03 9357 0672 or 0405 512 529. You can also drop us a visit at 1/9 Merri Concourse Campbellfield, Melbourne, Victoria 3061. Let our engineers help you out with your metal work needs.





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