STEEL INDUSTRY

For many years, we have been delivering chains and chain wheels to the steel industry in close cooperation with our customers planning and maintenance divisions we have been able to optimise the products and the service life. In addition, we ensure that the construction of the chains results in maximum ease of assembly, because in practice the available space is often limited along with the relatively high chain weight. Conveyor chains can reach 1000 kg/m weight per metre, for example, chains intended for coil transportation. In this case, coils with a weight of up to 30 t are being moved. For this purpose, i.e. warm and cold transport, can provide our clients with we offer heavy low-maintenance versions of block and strap link chains, which guarantee maximum service life.



Another field for conveyor chains in the steel industry are chains intended for cooling beds. Here profiles or slabs are moved on special bush conveyor chains while they are being cooled down to prepare them for the following processing stages. Because of the high temperature and the harsh environment presented by the scale, we use special materials with particular surface finishes.



Carrying and roller chains in the form of bush conveyor chains are often used for the traverse transport of profiles or pipes. Depending on the design of the equipment, accumulating roller conveyor chains may also be used. These chains are also included in our product range.
 The so-called traverse transport is often used to move the material to large saws that shape the ends of the respective profile or pipe. After sawing, these ends are dropped on scrap conveyors. These consist of double strand chains that are linked by means of an axle or a steel cell. We supply both, the chains as well as the steel cells of high-quality material to ensure that the impact load of the pieces of scrap metal is being absorbed.



Steel-producing plants may also employ strip accumulators for coils, so-called looping towers. Here platforms are moved vertically by means of highly efficient heavy roller chains. Because of the extreme loads, these duplex or triplex roller chains have optimised press fits and heavy-duty materials in the area of the joints. Based on our experience, we use special lubricants during the assembly of these chain types to achieve maximum service life for the user. Not only do we supply the chain, but also installation tools, operator manuals and maintenance instructions as well as a calculation of the expected service life, if requested.

Beside these applications, a vast number of special chains are being used in the steel industry.

Please submit your enquiry. We will help you with pleasure.

AUTOMOTIVE INDUSTRY

The automobile industry produces subassemblies, bodywork or complete vehicles using different types of chains. We implement the requirements of our clients, as for example ease of assembly, low maintenance as well as system availability

For instance, bodywork or body parts are moved by means of overhead conveyors or skid conveyor systems. These conveyors employ bush conveyor chains that are often of the lube-free type. Depending on the expected loads and the installation space, these chains may be equipped with inner or outer pulleys. The selection of the bearings for these pulleys depends on the load as well as the chain speed. Here we employ reinforced synthetic materials with high wear resistance in particular for the pairs of friction bearings that are exposed to high surface pressures. Practical tests in different applications have been very successful.

Another area where articulated chains may be used is in immersion baths as well as enamelling lines, as for example pendulum conveyors or roller-carrying chains as skid chains for longitudinal conveyors. Starting with the bid phase, we make sure that the lubricants are compatible with the media of the immersion baths or the paintwork. Special coatings on links and joint parts prevent seizures between the varnish and the conservation material. This results in extending the service life of the chain combined with a reduction of maintenance intervals.

After painting, the body parts are cured in an oven. Here the skids with the body parts are moved through the oven by means of chains, so-called curing chains. Since the chains are exposed to temperatures of up to 250°C we adapt materials as well as tolerances these conditions.



When the vehicles have been assembled they are often transported on wide plate conveyors or two-track conveyors with wheel spacer. The vehicles on the plate conveyors that may be up to 3,200 mm wide are filled with the media or they may undergo final testing by the operator. The two-track conveyor is also used to subject the vehicles to a rain test to check for leaks. Under these conditions the chain material and bearings of the rollers is subjected to the excessive stresses, in particular to corrosion. Special coatings and the use of hardened stainless steel ensure that our products are suitable for this type of application while simultaneously providing maximum availability. Depending on the clients requirements we can also offer all these chain types in lube-free versions.

Please call us. We will gladly help you to produce subassemblies, bodies or complete vehicles in the automobile industry.

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Because of the optimisation of the overhead clearance, the cable
drive mechanisms have been replaced with stainless steel chains.
As a result of the reduced pitch circle of the drive and return pinions in relation to the winding drums the height could be reduced by approx. 1.5 m. Based high annual number of operations of the sluice, the chain was designed with moveable pin supports, i.e. self-lubricated bushes are installed at both, the inner and the outer link plates.

IIn Wieblingen, a stainless steel lifting/folding chain with self-lubricated bushings was employed. The lifting chain is 
attached to the roller. The other end is attached to the 
gate as a simplex chain. Therefore, fine adjustment of both, 
the overpour gate as well as the roller movements for large flow rates, may be controlled with a drive pinion.

The chains for the weir of the Lengfurt openings M and R 
were refurbished partially, because this equipment is only intended 
to be used for a maximum of 20 years. In this case, a standard steel chain with shrunk-fit collar rings. The link plates 
are provided with corrosion protection. Joints are lubricated at 
regular intervals that depend on the number of flexures.

The drives of the upper and lower gates of the large sluice gate 
in Meppen were restored. The lower gate is driven by a jointed rack
with counterweights that are attached to the gate by means of ropes. The jointed rack is made completely from stainless steel with self-lubricating bronze bushes.

The sprockets used to convey bulk material are subject to extremely high loads. For this reason, the sprockets that are used often have bolted separated rims. This design permits quick and simple replacement of the segments. The segments are produced from a particularly wear-resistant type of steel. The tooth gaps are casehardened in a special process.