Calcium hydroxide is easily spreadable and sprayable over large tracts of land. In this way farmers use our carbide lime to neutralize the affects of acid rain, and mines use it to neutralize acidic water runoff. In the right amount, the fine size and reactivity of our calcium hydroxide causes a chemical reaction with soil similar to the formation of concrete. This soil stabilization reaction is used in the road construction industry as it forms a very stable sub-roadbed surface for our roads and highways.

Chipless tapping: Since the thread is formed and not cut, there are no chips to interfere with the tapping process or to cause chip-removal problems in blind holes. This enables cleaner holes with improved surface finish.

In every case, consistent carbide purity and sizing are of special importance, especially with respect to oversize and fines.

Roll tapdrill size chart

Among the many uses of acetylene gas, the largest and perhaps the most familiar is its use in the form of cylinder gas for metal fabrication and construction. When combined with oxygen in an oxyacetylene torch, acetylene produces a flame temperature in excess of 6,000 degrees F, the hottest flame of all hydrocarbon gases. This provides the means to cut or join many types of metal, cleanse them of surface imperfections, and strengthen them through flame hardening. In addition, acetylene is lighter than air and is therefore the safest fuel gas to use in confined spaces, below ground, or on ships.

Jarvis can optimize Jarflo designs utilizing variations in the number of lobes and lube grooves, variable cutdown lengths, and controlled minor diameters to maximize productivity and provide the lowest cost-per-hole.

Jarflo is the premier name in roll form tapping. Our innovative designs are used for a wide variety of applications including engine components, fasteners, spin-on oil filters, sucker rod couplings, and in-die tapping. They are produced with ground radius crests designed to reduce torque requirements by as much as 50%.

For this application, Carbide Industries can provide the grade size of calcium carbide that best meets the requirements of a particular application. Standard sizes range from 0.5" x 0.25" (13 mm x 6.5 mm) to 10 x 40 US-mesh (2 mm x 0.4 mm). For increased ease of application, these grades are available in smaller 2 1/2 and 5 gallon containers, in addition to the conventional 55 gallon drums and 2.5 ton bulk flo-bin containers.

Carbide is an essential tool for the removal of unwanted iron oxide from furnace slag that is carried into the ladle during tapping. When added to the liquid metal stream, or to the ladle after tapping, a coarser grained carbide reacts with the oxides and recovers iron and expensive alloys that otherwise would have been lost. Furthermore, left untreated, these oxides can interfere with the downstream steel refining operation by inhibiting desulfurization, oxidizing ("fading") alloy additions, and attacking refractories.

Jarflo forming taps are produced with ground radius crests designed to reduce torque requirements by as much as 50%. They are also manufactured with the crest location in the cutdown section in perfect lead with the crest location in the full diameter. This feature displaces material evenly resulting in reduced torque requirements.

For furnace injection, Carbide Industries produces carbide in a size range suitable for pneumatic transport to the furnace, where it is blown into the furnace with inert gas. Carbon injection ports that are marketed by several companies are entirely suitable for carbide injection. Carbide Industries LLC has also certified pneumatic equipment vendors that have the know-how to manufacture the tranport equipment. (Pictured is a MOCA pneumatic injector/transporter modified for use with calcium carbide produced by More s.r.l.)

And, Jarvis knows automotive. From fasteners to seat components, we have experience in all different parts and materials.

At Carbide Industries, calcium carbide production in different sizes (grades) is all we do. Generally speaking, the different grades of carbide that we make correspond to different reactivities of the carbide. For example, we produce fast-acting carbide powder that is injected into molten iron to combine with and remove sulfur. We also supply carbide in a slower-reacting nut size to add to the stream of molten metal when the steelmaking furnace is tapped. The carbide reduces oxides and returns iron and metal alloys to the steel that would otherwise be trapped in the slag, but does not react so fast that the steel overflows its ladle.

Better thread gaging: Forming taps rearranges the metal in the hole to create the thread. Because no metal is cut away, the possibility of producing oversized threads is greatly reduced.

As late as 2002, most blast furnace iron was desulfurized in the torpedo car as shown above. In the integrated steel mill, this practice has now been largely replaced by the use magnesium to remove an initial amount of sulfur in the transfer ladle, and the use of carbide as a steel ladle deoxidizer and slag conditioner to obtain the final sulfur specification.

Carbide Industries manufactures three standard sized products for ductile iron desulfurization, generally within the range of 8 to 80 US-mesh (2.5 to 0.2 mm). In addition, two patented specialty products are available to meet specific customer requirements. These specialized products are formulated to help eliminate the retention of unreacted carbide in the resulting desulfurization slags and also to minimize slag odor.

Jarvis can optimize Jarflo forming tap designs utilizing variations in the number of lobes and lube grooves, variable cutdown lengths, and controlled minor diameters to maximize productivity and provide the lowest cost-per-hole. In fact, according to the most recent 2017 USCTI Data, over 25% of the US Market uses our form taps for their applications.

In ductile iron foundries, liquid iron must be desulfurized before specialized inoculation treatments can be employed. This desulfurization is frequently performed by feeding granular forms of calcium carbide onto the surface of the liquid iron, which is contained in specially designed mixing units.

Calcium carbide is converted into acetylene in a controlled reaction with water using an apparatus called a generator. Acetylene, which has the chemical formula C2H2, is an extremely useful hydrocarbon due to the energy that is locked up in the triple-bond between the carbon atoms. This energy is then released and utilized in different ways by our customers for a variety of industrial purposes.

The difference between form taps and cutting taps is important to note out of the gate. Forming taps displace the metal/material, while cutting taps on the other hand remove the material. At Jarvis Cutting Tools we’ve named our line of forming taps the Jarflo series. Learn more about form tapping with our free booklet below!

Calcium carbide is converted into acetylene in a controlled reaction with water using an apparatus called a generator. Acetylene, C2H2, is an extremely useful hydrocarbon due to the energy that is locked up in the triple-bond between the two carbon atoms. This energy is then released and utilized in different ways by our customers for a variety of industrial purposes.

In addition, since most of the slag that is generated in the EAF is not tapped into the ladle, all of the benefits of oxide reduction and alloy recovery that are well-known in ladle metallurgy are available to the EAF on a much larger scale.

Although aluminum, ferrosilicon, silicon carbide, and even coke have also been used for this purpose, calcium carbide has proven to be more economical, more efficient, and more reproducible in its effects. This is due to the fact that unlike the other materials, calcium carbide produces CO gas which uniformly distributes and mixes the carbide while foaming the slag; does not require a balancing lime addition as do silicon-based additives (in fact every pound of carbide adds about one pound of lime); reacts exothermically (producing heat) to not chill the slag; and under typical conditions does not dissolve in steel producing practically no carbon pick-up, no unexpected deoxidation, and nearly 100% utilization.

We encourage you to send a tool sketch/part print and a detailed description of your requirements. We encourage you to provide the following information when requesting a Special Tool:

Our customers need a competitive advantage, and gaining an advantage in this competitive industry is not easy. This requires work, discipline, and more work. It requires both you (aka the customer) and us (aka the supplier) to define the objective, test the options, measure the results, and implement the solution. Standard catalog items can take you only part of the way; why not experience an exclusive solution?

Carbide Industries LLC generates large volumes of acetylene at the Calvert City, Kentucky, plant for distribution via pipeline to several specialty chemical manufacturers.

You will not find any forming taps (Jarflo’s) that work as well as ours! Jarvis Cutting Tools has the ability to grind either a crest flat or a crest radius. Traditionally, taps are produced with crest flats. This truncated thread form works the best in some applications. But Jarvis ground crest radius has significant advantage in a wide variety of applications. The crest radius provides an edge prep for forming taps. Our rounded shoulders can dramatically increase tap life and create much stronger threads. In fact, there are many applications, which now specify Jarvis’ crest radius because of the extra strength they provide.

Our products are manufactured with the crest location in the cutdown section in perfect lead with the crest location in the full diameter. This feature displaces material evenly resulting in reduced torque requirements.

A co-product of the acetylene generation process, calcium hydroxide is extremely useful in a variety of industrial applications. Perhaps the most famous use of our calcium hydroxide is in the scrubbing of stack gases from fossil-fueled power plants to remove sulfur compounds before release to the air.

Form tapvs cuttap

Purity and particle size are the key parameters for optimum effectiveness in these applications. Particle sizing is carefully selected to provide maximum contact with carbide particles without incurring excessive dust losses.

An acetylene cylinder for cutting and welding purposes is perhaps the most recognizable use, but many important chemicals are derived from acetylene.

FormingTap

When carbide is reacted with water to produce acetylene, it produces calcium hydroxide, itself a useful chemical. Having a pH of 12.4 and a ready reactivity with sulfur, it is widely used for acid neutralization, pH modification of soil, and for the cleaning of sulfur emissions from industrial processes and power generators.

While calcium carbide is utilized directly as a process material, its major use and perhaps its greatest versatility is realized when the rock-like substance is reacted with water to produce acetylene and calcium hydroxide. The unique chemistry of the triple-bonded carbon in the acetylene molecule allows for a variety of useful chemical reactions to form intermediates which are used in the manufacture of a diverse range of chemical derivatives.

The best way to choose which grade you need is to contact us. Our industry experts have decades of experience specifying carbide grades for different applications and optimizing processes in many industries.

From leveling fixtures, to cover, to assembly brackets, they all have tapped holes that need a cost effective solution. Jarvis provide industry leading cost-per-hole solutions for a wide variety of industrial customers.

In addition, steelmakers use calcium hydroxide to neutralize waste pickling acid, and chemical manufacturers to neutralize waste streams; while municipalities use it to treat sewage and builders to make sand-lime brick. Carbide Industries is a major supplier of this product, which is available in both dry and slurry forms.

In addition, the reaction of carbide with oxides produces a large amount of heat that is highly retained in the process. This has efficiency implications for ladle metallurgy, but moreover carbide provides major cost savings as a source of energy and productivity improvement in the steelmaking furnace.

In modern steelmaking operations, the need for lower sulfur steels demanded by modern continuous casting operations and specialty applications has increased calcium carbide's appeal as a hot metal desulfurizer.

Because of their reactivity, calcium carbide powders are manufactured, mixed, loaded, and transported in either 20 ton pressure differential trailers or 90 ton railcars, under an inert nitrogen atmosphere.

In modern steelmaking operations, the need for lower sulfur steels demanded by modern continuous casting operations and specialty applications has increased calcium carbide's appeal as a hot metal desulfurizer or as a modifier to the slag to increase desulfurization efficiency.

Stronger threads: The grain flow of formed threads – as a result of form tapping – follows the contour of the thread resulting in greater thread strength.

Roll tapdrill size

For subsurface injection, a powdered carbide is manufactured by ball milling selected sizes of carbide to less than 140 US-mesh (<105 microns). The milled carbide can then be custom blended with a wide range of other powder additives, such as lime, limestone, and fluorspar to meet customer specified formulations. The milled carbide is treated with special additives to significantly improve flow characteristics.

Acetylene derivatives are used in a variety of everyday consumer products, including hair sprays, cosmetics, tabletted drugs, sun screens and lotions, antiseptics, and tartar-control toothpastes. In addition, acetylene intermediates provide the basic feedstock for the production of polyurethane fibers, synthetic rubber, perchloroethylene (a widely used dry cleaning solvent), trichloroethylene (a degreasing solvent used in metal working processes), and a new type of refrigerant gas which is designed to replace the environmentally damaging chlorinated fluorocarbons (CFC's) currently in widespread use.

Carbide has the unique ability to react only with metal oxides without adversely affecting steel chemistry, adding significant amounts of energy to the process. In the electric arc furnace (EAF) the energy produced during the oxide reduction is accompanied by the production of heated lime particles and CO gas which assist in retaining the heat generated while adding to the ability of EAF slags to foam.

Stronger taps: The absence of cutting material due to the use of forming taps eliminates chip residue. Thus, the absence of chips eliminates the need for flutes, resulting in a solid, stronger tap for your application.

Carbide Industries LLC provides calcium carbide to both large national distributors of industrial gases and to numerous smaller, independently owned businesses, which generate acetylene for cylinder filling at locations throughout the US, Canada, and the Caribbean.

Roll tapvs cuttap

Longer tap life: Jarvis’ industry-leading forming taps last 3 to 20 times longer than cutting taps because they have no cutting edge to dull. This leads to cost savings and greater returns, which in the end equals a stronger hold and a bolstered bottom line. Both are sound business practices.

Calcium carbide is a powerful and effective chemical reducing agent, and can also be used as a source of energy. Nowhere is this more evident than in the field of metallurgy, where it is used in several ways to reduce costs.