There is no need at all for any of the fluxes that are usual - and often cause problems - in conventional
brazing processes. The arc burning at the (positive-poled) wire electrode activates the surface.
Pure argon is the shielding gas most often used in MIG brazing. Mixed gases with an active
component of up to 1 % CO2 or oxygen, for example, are advantageous for a large number of
applications.
The low process temperature in MIG brazing has a positive effect on the application. Because zinc
vaporises at a relatively low temperature (907 °C), very poor results are obtained when attempting to
join galvanised sheets by welding.
In MAG welding, a great deal of porosity and spattering results. The vaporisation of the zinc makes the
arc very unstable and causes heavy fume generation.
In MIG brazing, on the other hand, the base metal is not fused, and so much less zinc vaporises. Also,
there is much less heat input, which means that far less distortion occurs.
The brazing seam is much less prone to corrosion, as the zinc layer is left undamaged even in the
seam zone itself. A further advantage results from the good gap bridgeability of the process.
MIG brazing is used for all the types of joint known from GMA welding (butt, fillet, flanged and lapped
joints). Electrode melt-off normally takes place in the pulsed arc, with one single droplet detaching
itself from the wire electrode per pulse.
The material is transferred into the weld pool without any short circuiting. As a result, the arc is almost
entirely free of spattering.
For a stable, reproducible process, a high-grade power source is indispensable. Inverter power
sources with pre-programmed parameters for copper-based welding wires make the welder’s job
much easier and deliver outstanding brazing results.
The amperage range in MIG brazing typically extends from 40 A to 130 A, with brazing speeds that
are usually between 70 and 100 cm/min. These values relate to the mean amperage of the pulsed arc.
It follows from this that the region being used here lies towards the bottom of the power source’s
operating range. The background current is often 20 A or less.
An inverter power source with a high switching frequency of 100 kHz delivers an extremely smooth
welding current - which is a fundamental prerequisite for a stable plasma column.
There is no need at all for any of the fluxes that are usual - and often cause problems - in conventional
brazing processes. The arc burning at the (positive-poled) wire electrode activates the surface.
Pure argon is the shielding gas most often used in MIG brazing. Mixed gases with an active
component of up to 1 % CO2 or oxygen, for example, are advantageous for a large number of
applications.
The low process temperature in MIG brazing has a positive effect on the application. Because zinc
vaporises at a relatively low temperature (907 °C), very poor results are obtained when attempting to
join galvanised sheets by welding.
In MAG welding, a great deal of porosity and spattering results. The vaporisation of the zinc makes the
arc very unstable and causes heavy fume generation.
In MIG brazing, on the other hand, the base metal is not fused, and so much less zinc vaporises. Also,
there is much less heat input, which means that far less distortion occurs.
The brazing seam is much less prone to corrosion, as the zinc layer is left undamaged even in the
seam zone itself. A further advantage results from the good gap bridgeability of the process.
MIG brazing is used for all the types of joint known from GMA welding (butt, fillet, flanged and lapped
joints). Electrode melt-off normally takes place in the pulsed arc, with one single droplet detaching
itself from the wire electrode per pulse.
The material is transferred into the weld pool without any short circuiting. As a result, the arc is almost
entirely free of spattering.
For a stable, reproducible process, a high-grade power source is indispensable. Inverter power
sources with pre-programmed parameters for copper-based welding wires make the welder’s job
much easier and deliver outstanding brazing results.
The amperage range in MIG brazing typically extends from 40 A to 130 A, with brazing speeds that
are usually between 70 and 100 cm/min. These values relate to the mean amperage of the pulsed arc.
It follows from this that the region being used here lies towards the bottom of the power source’s
operating range. The background current is often 20 A or less.
An inverter power source with a high switching frequency of 100 kHz delivers an extremely smooth
welding current - which is a fundamental prerequisite for a stable plasma column.
การแปล กรุณารอสักครู่..
There is no need at all for any of the fluxes that are usual - and often cause problems - in conventional
brazing processes. The arc burning at the (positive-poled) wire electrode activates the surface.
Pure argon is the shielding gas most often used in MIG brazing. Mixed gases with an active
component of up to 1 % CO2 or oxygen, for example, are advantageous for a large number of
applications.
The low process temperature in MIG brazing has a positive effect on the application. Because zinc
vaporises at a relatively low temperature (907 °C), very poor results are obtained when attempting to
join galvanised sheets by welding.
In MAG welding, a great deal of porosity and spattering results. The vaporisation of the zinc makes the
arc very unstable and causes heavy fume generation.
In MIG brazing, on the other hand, the base metal is not fused, and so much less zinc vaporises. Also,
there is much less heat input, which means that far less distortion occurs.
The brazing seam is much less prone to corrosion, as the zinc layer is left undamaged even in the
seam zone itself. A further advantage results from the good gap bridgeability of the process.
MIG brazing is used for all the types of joint known from GMA welding (butt, fillet, flanged and lapped
joints). Electrode melt-off normally takes place in the pulsed arc, with one single droplet detaching
itself from the wire electrode per pulse.
The material is transferred into the weld pool without any short circuiting. As a result, the arc is almost
entirely free of spattering.
For a stable,กระบวนการซึ่งเป็นแหล่งพลังงานคุณภาพสูง ซึ่งได้แก่ อินเวอร์เตอร์แหล่งพลังงาน
สอนโปรแกรมพารามิเตอร์สำหรับทองแดงจากสายเชื่อมของเครื่องเชื่อมทำให้งานง่ายขึ้นมาก และส่ง
เด่นประสานผล ช่วง MIG แอมแปร์ประสานมักจะขยายจาก 40 เป็น 130 , ประสานกับความเร็วที่
มักจะอยู่ระหว่าง 70 และ 100 ซม. / นาที These values relate to the mean amperage of the pulsed arc.
It follows from this that the region being used here lies towards the bottom of the power source’s
operating range. The background current is often 20 A or less.
An inverter power source with a high switching frequency of 100 kHz delivers an extremely smooth
welding current - which is a fundamental prerequisite for a stable plasma column.
การแปล กรุณารอสักครู่..