CN109382593A - A kind of cutting method of special alloy cast iron - Google Patents
A kind of cutting method of special alloy cast iron Download PDFInfo
- Publication number
- CN109382593A CN109382593A CN201710669422.1A CN201710669422A CN109382593A CN 109382593 A CN109382593 A CN 109382593A CN 201710669422 A CN201710669422 A CN 201710669422A CN 109382593 A CN109382593 A CN 109382593A
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- CN
- China
- Prior art keywords
- meat
- cast iron
- special alloy
- alloy cast
- cut
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
Abstract
The present invention relates to cutting technique fields, especially a kind of cutting method of special alloy cast iron, include the following steps: first by hand arc welding the inner surface of special alloy cast iron part position weld width to be cut be 15-20mm mild steel weld meat, meat is welded to it with oxygen-acetylene and carries out gas flame cuttiug with the special alloy cast iron part that meat is connected and fusion penetration is 3-5mm is welded, on the special alloy cast iron part surface that cut place is exposed, the mild steel that electric arc welding width is 15-20mm by hand again welds meat, meat is welded to it with oxygen-acetylene and carries out gas flame cuttiug with the special alloy cast iron part that meat is connected and fusion penetration is 3-5mm is welded, in cycles, until reaching required cut lengths, of the invention is a little: saving fund, meet the demand of particular job state.
Description
Technical field
The present invention relates to cutting technique field, especially a kind of cutting method of special alloy cast iron.
Background technique
Welding: also referred to as welding, Rong connect, be it is a kind of connect in a manner of heating, high temperature or high pressure special alloy category or its
The manufacturing process and technology of his thermoplastic material such as plastics.The purpose of engagement is reached in welding by following three approach: molten
Weldering --- the workpiece that heating is intended to engage is allowed to be partially melting to form molten bath, just engages after the cooled and solidified of molten bath, can be added when necessary
Molten to fill out object auxiliary, it is the welding processing for being suitble to various metals and special alloy, is not required to pressure；Pressure welding --- welding process is necessary
Butt-welding fitting applies pressure, belongs to the processing of various metal materials and part metals material；Soldering --- using lower than base material fusing point
Metal material do solder, using liquid solder soak base material, fill play movement, and with base material diffuse into one another realization link weldering
Part is suitable for the welding processing of a variety of materials, is also suitable for the welding processing of different metal or foreign peoples's material.
There are many kinds of the energy sources of modern times welding, including gas flame, electric arc, laser, electron beam, friction and ultrasonic wave
Deng other than use in the factory, welding can also carry out in a variety of contexts, such as field, underwater and space.No matter at what
Place, welding all may bring danger to operator, so must take safeguard procedures appropriate when being welded.It welds to people
The injury that body may cause includes burn, electric shock, inpairment of vision, sucking toxic gas, ultraviolet light overexposure etc..
The crusher of prior art production finds that its upper frame assembly cantilever crane special alloy is cast in long-term production process
Ironware is severely deformed, it is necessary to replace, if upper frame assembly cantilever crane integral replacing involved great expense, cost is too high, so only
Upper frame assembly cantilever crane special alloy cast iron part is replaced, but since the material of this special alloy cast iron part is special alloy cast iron,
By its characteristic, does not form slag stream in cutting process under high temperature action, do not flow, and the use of special alloy cast iron part
It is interference fit, is embedded in upper frame assembly cantilever crane, therefore successively using several schemes all without takes out special alloy cast iron
Part.The scheme for such as utilizing mechanical force to be ejected with two hydraulic jacks, fails through great efforts；It is cut open using air-arc cutting interior
The method taken out after set, fails through field practice；Manual electric arc welding cutting and oxygen-autogenous cutting is selected also not to prove effective；With dry
Ice quickly cooling makes cantilever crane inner sleeve shrinkage, and the scheme that mechanical force pressurization is taken out in addition has no resolution after freezing in 12 hours.
Summary of the invention
The metal member that the object of the present invention is to provide a kind of by being added to good fluidity on special alloy cast iron part surface
Element changes its metallurgical structure and lattice, to reach the cutting method of the special alloy cast iron of cutting purpose.
The specific technical solution that the present invention uses is as follows:
A kind of cutting method of special alloy cast iron, includes the following steps:
(1) first by hand arc welding special alloy cast iron part position weld width to be cut be 15-20mm it is low
Carbon steel welds meat,
(2) with oxygen-acetylene to the weldering meat welded and with this weldering meat be connected and fusion penetration be 3-5mm special alloy cast iron part
Gas flame cuttiug is carried out,
(3) on the special alloy cast iron part surface of the cut place exposing, electric arc welding width is 15-20mm by hand again
Mild steel weld meat,
(4) with oxygen-acetylene to the weldering meat welded and with this weldering meat be connected and fusion penetration be 3-5mm special alloy cast iron part
Gas flame cuttiug is carried out, in cycles, until reaching required cut lengths.
Further improvement of the present invention, mild steel are the mild steel that phosphorus content is 0.1-0.3%.
Further improvement of the present invention, when the special alloy cast iron part is the neck bush of crusher, using as follows
Step:
(1) first by hand arc welding neck bush inner surface position weld width to be cut be 15-20mm it is low
Carbon steel welds meat,
(2) flame is carried out with oxygen-acetylene to the weldering meat welded and with this neck bush that weldering meat is connected and fusion penetration is 3-5mm
Cutting,
(3) the neck bush surface mild steel that electric arc welding width is 15-20mm by hand again exposed in the cut place
Meat is welded,
(4) flame is carried out with oxygen-acetylene to the weldering meat welded and with this neck bush that weldering meat is connected and fusion penetration is 3-5mm
Cutting, in cycles, until the thickness of neck bush reaches 1.8-2.5mm,
(5) it is cut with symmetrical place of the above-mentioned same method to the inner surface of neck bush cutting part,
(6) the neck bush ejection after having been cut using jack or mechanical force.
Beneficial effects of the present invention: due to using above-mentioned technique, good fluidity is added in special alloy cast iron part
Metallic element changes base material metallurgical structure and lattice, to achieve the purpose that cutting；Meet particular job shape
The demand of state saves fund, has replenished the blank that Metal Cutting technical field cuts special alloy cast iron.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be described in further detail, the reality
It applies example for explaining only the invention, protection scope of the present invention is not constituted and limited.
Embodiment: a kind of cutting method of special alloy cast iron includes the following steps:
(1) first by hand arc welding special alloy cast iron part position weld width to be cut be 15-20mm low-carbon
Steel welds meat,
(2) with oxygen-acetylene to the weldering meat welded and with this weldering meat be connected and fusion penetration be 3-5mm special alloy cast iron
Part carries out gas flame cuttiug,
(3) on the special alloy cast iron part surface of the cut place exposing, electric arc welding width is 15-20mm by hand again
Mild steel weld meat,
(4) with oxygen-acetylene to the weldering meat welded and with this weldering meat be connected and fusion penetration be 3-5mm special alloy cast iron part
Gas flame cuttiug is carried out, in cycles, until reaching required cut lengths.
In the present embodiment, mild steel is the mild steel that phosphorus content is 0.1-0.3%.
In the present embodiment, when special alloy cast iron part is the neck bush of crusher, using following steps:
(1) low-carbon that arc welding is 15-20mm in the inner surface position weld width to be cut of neck bush by hand first
Steel welds meat,
(2) flame is carried out with oxygen-acetylene to the weldering meat welded and with this neck bush that weldering meat is connected and fusion penetration is 3-5mm
Cutting,
(3) the neck bush surface mild steel that electric arc welding width is 15-20mm by hand again exposed in the cut place
Meat is welded,
(4) flame is carried out with oxygen-acetylene to the weldering meat welded and with this neck bush that weldering meat is connected and fusion penetration is 3-5mm
Cutting, in cycles, until the thickness of neck bush reaches 1.8-2.5mm；
(5) it is cut with symmetrical place of the above-mentioned same method to the inner surface of neck bush cutting part,
(6) the neck bush ejection after having been cut using jack or mechanical force.
The present embodiment be primarily adapted for use in by cutting member can operating space it is narrow, it is difficult to using other technological means special type
Special alloy cast iron part, the chemical component of this special alloy cast iron part material, which is determined, cannot use other cutting techniques to it,
The metallic element of good fluidity can only be added, i.e. phosphorus content is the mild steel of 0.1-0.3% or the metal member of other good fluidities
Element changes the metallographic structure of the special alloy cast iron part of special alloy cast iron and lattice, can be only achieved the purpose of cutting.
When the thickness for cutting to special alloy cast iron part reaches 1.8-2.5mm, stop cutting, in order to not hurt upper frame
Assembly cantilever crane, to meet the technical requirements for installing special alloy cast iron part again.
Basic principles and main features and advantage of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (3)
1. a kind of cutting method of special alloy cast iron, which comprises the steps of:
(1) first by hand arc welding special alloy cast iron part position weld width to be cut be 15-20mm it is low
Carbon steel welds meat,
(2) with oxygen-acetylene to the weldering meat welded and with this weldering meat be connected and fusion penetration be 3-5mm special alloy cast iron part
Gas flame cuttiug is carried out,
(3) on the special alloy cast iron part surface of the cut place exposing, electric arc welding width is 15-20mm by hand again
Mild steel weld meat,
(4) with oxygen-acetylene to the weldering meat welded and with this weldering meat be connected and fusion penetration be 3-5mm special alloy cast iron part
Gas flame cuttiug is carried out, in cycles, until reaching required cut lengths.
2. the cutting method of special alloy cast iron according to claim 1, which is characterized in that the mild steel is phosphorus content
For the mild steel of 0.1-0.3%.
3. the cutting method of special alloy cast iron according to claim 1, which is characterized in that when the special alloy is cast
When ironware is the neck bush of crusher, using following steps:
(1) first by hand arc welding neck bush inner surface position weld width to be cut be 15-20mm it is low
Carbon steel welds meat,
(2) flame is carried out with oxygen-acetylene to the weldering meat welded and with this neck bush that weldering meat is connected and fusion penetration is 3-5mm
Cutting,
(3) the neck bush surface mild steel that electric arc welding width is 15-20mm by hand again exposed in the cut place
Meat is welded,
(4) flame is carried out with oxygen-acetylene to the weldering meat welded and with this neck bush that weldering meat is connected and fusion penetration is 3-5mm
Cutting, in cycles, until the thickness of neck bush reaches 1.8-2.5mm,
(5) it is cut with symmetrical place of the above-mentioned same method to the inner surface of neck bush cutting part,
(6) the neck bush ejection after having been cut using jack or mechanical force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669422.1A CN109382593A (en) | 2017-08-08 | 2017-08-08 | A kind of cutting method of special alloy cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669422.1A CN109382593A (en) | 2017-08-08 | 2017-08-08 | A kind of cutting method of special alloy cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109382593A true CN109382593A (en) | 2019-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710669422.1A Pending CN109382593A (en) | 2017-08-08 | 2017-08-08 | A kind of cutting method of special alloy cast iron |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091067A (en) * | 2022-08-02 | 2022-09-23 | 哈尔滨工业大学（威海） | Underwater local dry laser-ultrasonic hybrid welding and cladding welding torch |
-
2017
- 2017-08-08 CN CN201710669422.1A patent/CN109382593A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091067A (en) * | 2022-08-02 | 2022-09-23 | 哈尔滨工业大学（威海） | Underwater local dry laser-ultrasonic hybrid welding and cladding welding torch |
| CN115091067B (en) * | 2022-08-02 | 2023-10-10 | 哈尔滨工业大学（威海） | Underwater local dry method laser-ultrasonic composite welding and cladding welding torch |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190226 |
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| WD01 | Invention patent application deemed withdrawn after publication |