SU856703A1 - Method of fire trimming of metal - Google Patents
Method of fire trimming of metal Download PDFInfo
- Publication number
- SU856703A1 SU856703A1 SU782640932A SU2640932A SU856703A1 SU 856703 A1 SU856703 A1 SU 856703A1 SU 782640932 A SU782640932 A SU 782640932A SU 2640932 A SU2640932 A SU 2640932A SU 856703 A1 SU856703 A1 SU 856703A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- oxygen
- metal
- fire
- gas
- trimming
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000002184 metal Substances 0.000 title claims description 6
- 238000009966 trimming Methods 0.000 title 1
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- QRSFFHRCBYCWBS-UHFFFAOYSA-N [O].[O] Chemical compound [O].[O] QRSFFHRCBYCWBS-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
(54) СПОСОБ ОГНЕВОЙ ЗАЧИСТКИ МЕТАЛЛА(54) METHOD OF FIRE DECAYING METAL
II
Изобретение относитс к металлургии, а точнее к зачистке поверхностных дефектов заготовок, и может быть использовано в литейном и прокатном производствах.The invention relates to metallurgy, and more specifically to the stripping of surface defects in billets, and can be used in the foundry and rolling industries.
Известны способы огневой зачистки металла , согласно которым струю режущего кислорода подают в струю газокислородной подогревающей смеси 1.Known methods of fire stripping metal, according to which a jet of cutting oxygen is fed into the jet of gas-oxygen heating mixture 1.
Известен также способ зачистки, при осуществлении которого производ т подогрев поверхности потоком газокислородной смеси, подаваемым под острым углом к обрабатываемой поверхности, и последующую зачистку потоком кислорода тем же подаваемым под острым углом к поверхности 2.A stripping method is also known, in which the surface is heated by a stream of an oxygen-oxygen mixture supplied at an acute angle to the surface to be treated, and the subsequent cleaning with oxygen flow is also carried out at an acute angle to the surface 2.
Однако при осуществлении известных способов не обеспечиваетс достаточно высока производительность, особенно из-за больщого времени разогрева металма до температуры воспламенени .However, the performance of the known methods does not provide a sufficiently high performance, especially because of the long heating time of the metal to the ignition temperature.
Цель изобретени - повыщение производительности зачистки за счет хорошего смешени горючей смеси и уменьщени п тна активного нагрева.The purpose of the invention is to increase the stripping performance by mixing the combustible mixture well and reducing the active heat spot.
Поставленна цель достигаетс тем, что поток газокислородной смеси закручиваютThe goal is achieved by twisting the flow of the gas-oxygen mixture
и подают к поверхности по конуса с углом при верщине 24-28°.and served on the surface of a cone with an angle with the angle of 24-28 °.
Вращательное истечение газокислородной смеси по конусу обеспечиваетс подачей подогревающего кислорода тангенциально в кольцевую полость, выходом его через кольцевую щель, имеющую профиль расщир ющег .ос сопла, ось которого наклонена к центральной оси головки резака на угол 12-14°, эжектированием струей кислорода газа из кольцевой полости, их смещением иThe rotational outflow of the gas-oxygen mixture along the cone is ensured by supplying heated oxygen tangentially into the annular cavity, its exit through the annular gap having a profile that expands the nozzle, the axis of which is inclined to the center axis of the torch head at an angle of 12-14 °, ejected by a stream of oxygen gas from the annular cavities, their displacement and
JO сохранением формы струи кислорода. Благодар подаче газокислородной подогревающей смеси по конусу факел имеет концентрированное дро, вследствии чего происходит концентраци тепла подогревающего пламени на небольщой площади п тна актив5 ного нагрева, что в результате ведет к сокращению времени разогрева металла.JO preserving the shape of the jet of oxygen. Due to the supply of the gas-oxygen heating mixture over the cone, the torch has a concentrated core, as a result of which the heat of the heating flame is concentrated on a small spot of active heating, which results in a reduction in the metal heating time.
Кроме того, така форма струи и ее вращательное движение обеспечивают хорощее смещение горючей смеси и интенсивное (турбулентное) горение.In addition, this form of the jet and its rotational movement provide a good displacement of the combustible mixture and intensive (turbulent) combustion.
На фиг. 1 изображено устройство дл реализации предлагаемого способа и схема образовани газокислородной подогреваюFIG. 1 shows a device for implementing the proposed method and the scheme for the formation of a gas-oxygen preheater.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782640932A SU856703A1 (en) | 1978-07-07 | 1978-07-07 | Method of fire trimming of metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782640932A SU856703A1 (en) | 1978-07-07 | 1978-07-07 | Method of fire trimming of metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU856703A1 true SU856703A1 (en) | 1981-08-23 |
Family
ID=20775444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782640932A SU856703A1 (en) | 1978-07-07 | 1978-07-07 | Method of fire trimming of metal |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU856703A1 (en) |
-
1978
- 1978-07-07 SU SU782640932A patent/SU856703A1/en active
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