Hand Crank Forge Blowers for Blacksmithing
Roger Pink | May 17, 2017When most of us think about blacksmithing, medieval swords and armor, or wild-west horses in need of horseshoes generally jump to mind. Certainly, with modern methods of metal working, there are far fewer blacksmiths than there used to be. However, there does remain a robust niche service industry for blacksmithing that includes both decorative and industrial applications. Blacksmiths can repoint, retool and repair specialized hand tools or industrial parts economically. They also are great for providing solutions that preserve the artisan metalworking features of the old buildings found in the historic districts of cities. For quality, authentic metal working and specialized tools and parts, blacksmiths are hard to beat.
Image Credit: WikipediaModern blacksmiths still use a forge, hammer and anvil to practice their trade. One feature that can really improve the “feel” of a forge for the blacksmith can be found in hand crank forge blowers. In the past 100 years, electric blowers tended to be used for forges, but lately there has been a small but growing movement to return to a more mechanically precise solution. With hand crank blowers the flow of air is much easier to control, with fine adjustments simply a matter of changing the crank rate. They are quiet compared to vacuum blowers while still pulling a decent amount of air. Also, if the blacksmith has to step away from the forge, they don’t have to worry about burning up the irons left in the fire.
Hand crank blowers operate by moving air with centrifugal force by spinning a fan quickly and forcing air outward into the air delivery pipe. A series of gears are used to step up the number of turns or rotations the fan makes for each turn of the crank. The size of a blower for a good high volume machine is about 10 or more inches in diameter. Ideally, a blower needs only about a half revolution of the hand crank per second to force a strong blast in the fire. Most blowers have some type of mounting flange or lugs cast into their body or housing to allow mounting to a frame or stand.
Hand crank forge blowers have been around a very long time, at least since the mid-1800s. Traditionally they use radial or paddle fans. Those made with ball bearings tend to last longer and are easier to crank, though they must be filled with oil, which can leak through seams over time. For those blacksmiths looking to fire multiple irons at a once, traditional vacuum blowers are probably a better choice since they can provide the volumetric flow needed. For blacksmiths just starting out, or looking for more control, and less noise, hand crank blowers can be a great alternative the helps the metalworker become more in tune with their forge.
As our buildings and industries age and we are increasingly scrambling to preserve and refurbish the metalworking of the past, blacksmiths play a vital role producing tools and décor with soul and flair. The minor imperfections of the century old wrought iron fence can appeal to those surrounded by cookie-cutter metal décor. In a way, the imperfections of hand crafted work have become an indication of quality craftsmanship. A sign that someone who cared took quality materials and shaped them into something useful or beautiful. It shouldn’t be surprising that an industry built upon such values should be embracing the hand crank. After all, what is a hand crank forge blower but just way of taking more personal responsibility for the art?
Canada Blower is a distributor of fan / blower equipment, including high pressure blowers, high temperature fans, spark resistant and explosion proof ventilators, tubeaxial and vaneaxial high pressure ventilators. Canada Blower also does existing fans and blowers repairs, re-build, as well as dynamical fan wheels balancing. High-efficiency impellers result in low power consumption, operating costs, and quieter operation. All metal hardware is completely sealed from exposure to corrosion by incapsulating into FRP or plastic; the steel support frame and motor base are powder coated with a corrosion-resistant finish. In addition to being highly resistant to chemical corrosion, PP fans are self-extinguishing and will not support combustion.
A centrifugal blower is a fan designed to move air or gases in a confined area. The centrifugal blower has a number of blades mounted around the hub, which turns on a shaft that passes through the fan housing. The gas enters the side of the fan wheel and by use of centrifugal force accelerates over the fan blades. A centrifugal blower is usually used in factories or large open places that need air flow.
This could be an underground carpark, a gymnasium or any other open space with static air. There are many different centrifugal blowers on the market today and choosing one will depend on a number of factors.
The centrifugal blower has a number of blades mounted around the hub, which turns on a shaft that passes through the housing.
A Centrifugal fan can come in three different types of fan blades. They can come with forward curved blades, backward curved blades and straight radial blades. The type you need will come down to what the conditions are within the area in which you intend to use the device.
When inquiring about purchasing a centrifugal fan you will more than likely need someone from the company in which your purchasing the fan to come and take a look at the conditions the fan will be placed and also to check what kind of air pressure there is within the area.
The size of the area in which the centrifugal blower is to be used will obviously play a major part in the decision of how large it needs to be and how much air it can actually blow through the area. There are many different sizes that you can get to cover any area but depending on your circumstances you may need more than one to do the job adequately.
The type of air that is in the premises will also play a large role in which type of Centrifugal Blower you need. If the centrifugal fan is to be used in an area where the air conditions are standard then no adjustments will need to be made to the actual fan itself. On the other hand if you are going to operate the fan in other types of air density then adjustments can be made to the static pressure and brake horsepower.
Another point to be made when you are interested in purchasing a centrifugal blower is where you intend to put it. There are many different styles of centrifugal blowers, they include roof and ceiling ventilators, pressure and volume blowers, duct fans and blowers or freestanding fans and plenum fans ventilating.com fanblower.com highpressureblower.n
There is obviously an advantage with freestanding fans as you have the opportunity of moving it to different areas of the building / factory, which is an advantage. If you do have it mounted then it is out of the way and not taking up valuable room. Most Industrial fans come with a safety guard on them now which is made so that no human appendages can accidentally go into the fan. Most centrifugal fans come with an electric motor although they do make ones now which run off an generator also. This is a huge advantage if there is a power failure within the premises.
Most industrial fans make some kind of noise but with a lot of the new models being released now the noise level is minimal. Some can make more noise than others but this depends on the size of the fan and also the conditions which it is working in.