nozzles-cutting-74.html
CW Product Cat UK
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75
cutting
nozzles
a cutting nozzle has two main functions: → to guide the heating flame → to guide the cutting oxygen jet the cutting nozzle's design and adaptation to various fuel gases as re- gards the gas ducts' size, exact geometry, tolerances and surface finish, are of decisive importance when it comes to achieving a quality cut. the heating flame's task is to: → heat a point on the workpiece to its ignition temperature → retain the ignition temperature at the surface during the cutting process → clean the surface of impurities in order to facilitate the cutting oxygen jet's contact → protect and support the cutting oxygen jet the cutting oxygen jet's task is: → to strike the cut surface with high levels of gas purity and precision → to burn iron to produce iron oxide → to blow the iron oxide and other slag products out of the cut important! maintenance and choice of cutting nozzles in order to achieve the best cutting results, it is extremely important for the cutting nozzle to be cleaned and maintained regularly. the cleaning methods used are: → mechanical with cleaning needles, see pages 120 - 121 → chemical agents, kr 21 see page 111 → ultrasound the method you choose is dependent on the nozzle type. mechanical cleaning with cleaning needles for both cutting ducts and heating ducts may only be used on nozzles with cylindrical cutting ducts. select the correct cleaning needle diameter in accordance with the table on pages 120 - 121. cutting nozzles with expansion duct/conical, cylindrical with recess and the laval principle/high speed must be cleaned using chemi- cal methods or ultrasound. the choice of cutting nozzle is primarily dependent on: → type of fuel gas, normally acetylene or propane → type of cutting torch, normally for flat-sealed or 3-cone sealed nozzles → type of cutting; scrap cutting or quality cut with the highest possible cutting speed after that, select nozzle size according to the material thickness to be cut. there are various cutting nozzles for special tasks such as gouging and rivet cutting. cutting torch / application acetylene page propane page small injector torches (i) x 11 ha 411 45 hp 433 46 other injector torches (i) manual injector torches: x 21 safety injector *ma 133 d 83 mp 133 87 and older models type x 311 and x 501. ha 121 82 mechanised cutting bir as-d, a-hd 10 85 p-sd, py-hd 10 86 torches (1): jetstream ® , bm 31 cf and *jetex ® 84 *mp 133 87 corresponding older models *propex ® 88 gouging jetgroover ® 96 pressure torches (ii) manual cutting torches: coolex
® a 311 77 x 21 and corresponding ha 311 59 coolex ® p 331 60 older models as well as *tritex ® 90 mp 339 93 x 11 pressure torch *ma 319 92 mechanised cutting x 541 and corresponding *coolex ® a 311 77 torches: older models scrap cutting coolex ® a 317 78 coolex ® p 337 80 rivet cutting coolex ® a 341 bl 79 gouging coolex ® a 361 97 coolex ® a 351 b 98 coolex ® a 353 bl 99 powder cutting coolex ® a 337 powder 69 coolex ® p 337 powder 69 * recommended for mechanised cutting conical expanding cylindrical laval principle (gives super- sonic flow) high speed cylindrical with recess design of cutting ducts premium cutting nozzles. function and maintenance.
cutting-nozzles-cooling-76.html
