초록 ▼

A system for pickling hot rolled carbon steel strip with hydrochloric acid completely and uniformly in optimum time. The system consists of a series of cells made up of a number of section modules, each having a straight narrow passageway with monolithic top and bottom walls through which the strip

A system for pickling hot rolled carbon steel strip with hydrochloric acid completely and uniformly in optimum time. The system consists of a series of cells made up of a number of section modules, each having a straight narrow passageway with monolithic top and bottom walls through which the strip and pickling liquor travels and a pair of cooperative conduits in the top and bottom walls for introducing the fluid into the passageway. A wringer roll assembly with motor driven wringer rolls push the strip through each cell and consists of a housing having walls closely spaced to the rolls and a sealing element in the walls for the concentration of acid in each individual cell. The rate of pickling on the strip is increased due to the turbulence of the circulating pickling liquor within each cell, the higher temperatures, and the high concentration in each cell; the latter two of which are due to the design of the section modules.

대표청구항 ▼

An arrangement for treating a generally flat, moving product with top and bottom surfaces, such as a slab, plate, or strip with a treatment fluid, having a relatively higher temperature and higher concentration than otherwise possible comprising: cell means having a longitudinal relatively straight

An arrangement for treating a generally flat, moving product with top and bottom surfaces, such as a slab, plate, or strip with a treatment fluid, having a relatively higher temperature and higher concentration than otherwise possible comprising: cell means having a longitudinal relatively straight passageway for forming a passline for said product traveling through said arrangement in a substantially flat disposition, sealing means arranged at the entry and exit ends of said cell means, said sealing means at least at said exit end adapted to retain a substantial amount of said treatment fluid within said cell means, said passageway of said cell means having a generally rectangular cross-section with top and bottom wall areas having significant solid continuous surfaces spaced a relatively short distance from each other to define a narrow, fluid restricting chamber running the length of and parallel to said passline, and said cell means further comprising fluid inlet conduit means mounted in said top and bottom wall areas and having an exit opening in said solid surfaces and located a relatively short distance from each other and said passline for delivering said treatment fluid into said passageway of said cell means to totally immerse said top and bottom surfaces of said product in said fluid whereby said fluid impinges upon a substantially central portion of said top and bottom surfaces of said product in a manner said fluid is forced toward said surfaces of said product and caused to flow parallel to and on said surfaces at a high turbulent velocity rate relative to the speed of said product, said fluid conduit means being a plurality of spaced apart conduit means adapted to increase the speed of said fluid near said surfaces of said product as said portion of said top and bottom surfaces of said moving product progressively pass by each of said inlet conduit means in said cell means to obtain an increasing treatment rate of said moving product upon its travel in said cell means.