Wire Rod Pickling

What is wire rod pickling?

The following process is used for rod, bar and wire mill products in coil form

This process is used to remove surface scale and rust on coils of wire/rod. Unlike the
coil pickling continuous process, this is a batch process .i.e. It uses a number of tanks which the material is passed to in turn via an overhead crane system.

The material is picked up by a large overhead hook. It is then moved to one of seven stand alone hydrochloric acid tanks where it is submerged. The acid reacts with the surface of the coil and dissolves all of the scale and rust, the coil is picked up and gently turned during the process to ensure that the laps of steel separate to leave no touching areas. When pickled the coil is lifted into a high pressure jet wash where all traces of the acid are removed, it is dipped into a final neutralizing tank and then placed into any one of a number of coating tanks. Coatings such as lime, phosphate or a soap based lubricant are used, one or a combination of more than one being nominated prior to processing by the customer. The coatings both protect prior, and lubricate the product when it goes to its next process. Customers may carry out drawing of the rod to a closer gauge tolerance size or perhaps cold heading of forging might take place.

As with Coil Pickling a significant amount of work goes into the environmental and effluent control of the process.

Steel in	Steel out

Capabilities

To see the capabilities of our wire rod pickling machine please go to our Toll Processing section.

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