SPRAY NOZZLES FOR INDUSTRIAL APPLICATIONS STEEL WORK NOZZLES Part 2

PRODUCT IDENTIFICATION PNR CODING SYSTEM Every industrial product needs to be identified with a code to avoid mistakes. PNR product coding system was conceived to meet the following requirements: • codes are easily listed by a computer in alphabetical order. • codes fully describe the product, with no need of further information. • codes immediately provide the main characteristics of each product so to find it in the catalogue easily. Code Defintion is as follows: Y Y: Variant X: Construction B31: Nozzle material (see below) 1490: CAPACITY: 1 = capacity class (see below) 490 = identifies the...

GENERAL INFORMATION LIST OF Abbreviations - LEGENDA AI Pipe length Spray jet deflection angle Maximum operating pressure Nozzle orifice conventional diameter Maximum capacity Minimum internal passage diameter Maximum operating temperature Supply passage diameter Flange size Quick coupling connection Outer diameter Flange nominal size Cylindrical female thread BSP Outlet orifice diameter Conic male thread BSPT Nipple inside diameter Flange outer diameter Flange holes centre to centre diameter Product Warranty PNR products will be replaced or repaired at the option of PNR and free of charges if...

ELECTRIC FURNACE CONTINUOUS CASTING COOLING CONTINUOUS CASTING SLAB / blOOMS DESCALING NOZZLES

DUST SUPPRESSION ON RAW MATERIALS PARK E coke COOLING BLAST FURNACE BASIC OXIGEN CONVERTER COLD LAMINATION COLD LAMINATION

INDEX - part 1 Page ISO 9001:2000 Certification PRODUCT IDENTIFICATION GENERAL information Descaling Principles - Descaling nozzles feature - Impact measurement Model “GW” - Dove tail nozzle tips Model “HW/AH” - Short nozzles - Standard size Assembly parts HW/AH Model “HW/AA” - Nozzle tips, mini-sized Assembly parts HW/AA Model “HW/AK” - High impact nozzle tips, standard-sized Assembly parts HW/AK Model “HW/AB” - High impact nozzle tips, mini-sized Assembly parts HW/AB Model “HV/AH” - High impact nozzle tips, special-sized Assembly parts HV/AH Model “HW/AM” - High impact nozzle tips, micro-sized...

INDEX - part 2 Page COLD ROLLING / PICKLING - Model “J (H - USA MARKET)” - Flat fan jet nozzle ROLLS COOLING - Model “KYA” - Rolls cooling nozzle Model “UEA D020” - Air knife cooling systems round jet Model “UEA L022” - Air knife cooling systems flat fan jet Model “UEB” - Air knife cooling systems bar blowers We regret not being able to update our customers on the continuous improvements to our product range, so please consider the information and product specifications supplied in this catalogue as indicative and not binding for our company. For each application that requires one or more characteristics...

DESCALING DESCALING PRINCIPLES The descaling process is crucial in steel industry to obtain higher quality products. Descaling nozzles are used for an efficient scale removal in hot rolling. The best method is the hydro-mechanical descaling process using high pressure water jets formed by special descaling nozzles. Working pressure range is from 50 to 400 bar (725 to 5.800 psi ), for GW type from 30 to 200 bar ( 435 to 2.900 psi). The impact of the water jet on the steel hot surface produces an impact force that, combined with the thermal action due to the temperature difference between jets...

DESCALING GW Type Dovetail nozzles HW / AH Type Short Nozzles - Standard size HW / AA Type Short Nozzles - Mini Size HW / AK Type High Impact - Standard Size HW / AB Type High Impact - Mini Size HV / AH Type High Impact - Special Size HW / AM Type High Impact - Micro Size

DESCALING DOVE-TAIL NOZZLES GW series nozzles have been the worldwide standard for many years in hot descaling mills. They have undergone many improvements, specifically to the inner orifice profile, resulting in a very even distribution of the water jet impact onto the steel surface. Their typical design with a dove-tail coupling between nipple and nozzle tip assures for correct alignment of the nozzle onto the spray manifold. Several nipples length value and a specific locknut allow for a wide choice of different assembly dimensions. SPRAY PATTERN SPRAY ANGLE CODES GwC Gwe Gwf Gwl 22° Stainless...

ASSEMBLY PARTS / DOVE - TAIL NOZZLES ZBC ZB NIPPLES ZB series welding nipples have been designed for the assembling of GW descaling tips onto main manifolds. The accurately machined dove-tail profile assures for precise alignment of the nozzle tip with respect to the axis of the spray manifold. The contact area with the nozzle tip shows a surface machined to an accurate finish to prevent leakage between nipple and nozzle tip.ZB nipples are available in three length values to match different dimensional requirements. Stainless steel AISI 316L The VAA 1001 B1B cap is designed for the proper assembly...

DESCALING SHORT NOZZLES - STANDARD SIZE The modern design of these nozzle offers the convenience of a more rational alignment system, with a copper seal used between nipple and nozzle tip. The nozzle efficiency is enhaced by means of a carefully designed flow stabilizer, which minimizes turbulence due to sharp direction change at the inlet from the main manifold. Provision is also made for a filter to be mounted at the nozzle inlet, minimizing nozzle clogging and abrasion. SPRAY PATTERN SPRAY ANGLE CODES Stainless steel AISI 303 Stainless steel AISI 420 hardened Stainless steel AISI 303 Tungsten...

ASSEMBLY PARTS / SHORT NOZZLES - STANDARD SIZE A = Complete B = Welding C = Flow Descaling unit Length (mm) Nipple Length (mm) Straightener Protrusion (mm) WELDING NIPPLE HW nozzles can be assembled on a variety of different nipples, with the same inlet, but with different lengths. The precision machined nipple inlet port assures precise positioning of the nozzle flat fan jet to the specified offset angle value of 15° with regard to manifold center line. This makes it possible to obtain uniform impact distribution yielding better decaling results. Stainless steel AISI 316L RG Flow stabilizer...