METHODS AND APPARATUS TO DETERMINE AND DISPLAY HEAT INPUT TO A WELD

    公开(公告)号:US20200254555A1

    公开(公告)日:2020-08-13

    申请号:US16860588

    申请日:2020-04-28

    Abstract: Methods and apparatus to determine heat input to a weld are disclosed. An example welding-type power supply includes a power converter to convert input power to output welding-type power, and a controller configured to: during a welding-type operation, calculate average instantaneous power values of the welding-type operation for discrete, non-overlapping time periods by multiplying voltage measurements and corresponding current measurements; identify an end of the welding-type operation; determine a duration of the welding-type operation; calculate a total average instantaneous power of the welding-type operation based on the average instantaneous power values for the time periods and the duration of the welding-type operation; and determine whether an acceptable range of the welding-type operation is exceeded based on the total average instantaneous power and the duration of the welding-type operation.

    Systems, methods, and apparatus to preheat welding wire

    公开(公告)号:US10675699B2

    公开(公告)日:2020-06-09

    申请号:US15343992

    申请日:2016-11-04

    Abstract: A contact tip assembly with a preheating tip comprises a welding power source configured to provide welding current to a welding circuit, the welding circuit comprising a welding electrode and a first contact tip of a welding torch. The assembly also includes an electrode preheating circuit configured to provide preheating current through a portion of the welding electrode via a second contact tip of the welding torch, and a voltage sense circuit to monitor a voltage drop across the two contact tips, and the electrode preheating circuit adjusts at least one of the first current or the preheating current based on the voltage drop.

    Systems, methods, and apparatus to preheat welding wire

    公开(公告)号:US10464157B2

    公开(公告)日:2019-11-05

    申请号:US15343992

    申请日:2016-11-04

    Abstract: A contact tip assembly with a preheating tip comprises a welding power source configured to provide welding current to a welding circuit, the welding circuit comprising a welding electrode and a first contact tip of a welding torch. The assembly also includes an electrode preheating circuit configured to provide preheating current through a portion of the welding electrode via a second contact tip of the welding torch, and a voltage sense circuit to monitor a voltage drop across the two contact tips, and the electrode preheating circuit adjusts at least one of the first current or the preheating current based on the voltage drop.

    Systems, methods, and apparatus to provide preheat voltage feedback loss protection

    公开(公告)号:US11911859B2

    公开(公告)日:2024-02-27

    申请号:US17014348

    申请日:2020-09-08

    CPC classification number: B23K9/1093 B23K9/0953

    Abstract: Systems, methods, and apparatus to provide preheat voltage feedback loss protection are disclosed. An example welding-type system includes a welding-type power source configured to provide welding-type power to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch; an electrode preheating circuit configured to provide preheating power through a first portion of the welding-type electrode via a second contact tip of the welding torch; a preheat feedback circuit configured to measure a preheat voltage; and an electrode preheat control circuit configured to: control the preheating power based on the preheating voltage; and control the electrode preheating circuit to reduce the preheating power in response to detecting an invalid preheat voltage measured by the preheat feedback circuit.

    System and method for inductance compensation in a welding-type system

    公开(公告)号:US11642737B2

    公开(公告)日:2023-05-09

    申请号:US15658727

    申请日:2017-07-25

    Inventor: Jake Zwayer

    Abstract: Systems and methods for inductance compensation in a welding-type system include a reel configured to wind a welding-type cable to reduce a first portion of the welding-type cable extending from the reel, and to unwind to increase the first portion of the welding-type cable extending from the reel, wherein a second portion of the welding-type cable is at least partially wound around the reel when stored. A controller determines a first length of the first portion of the welding-type cable, calculates a first inductance of the first portion of welding-type cable extending from the reel based on the first length, determines a second length of the second portion of the welding-type cable, calculates a second inductance of the second portion of welding-type cable wound around the reel based on the second length, and calculates a cable inductance of the welding-type cable based on the first inductance and the second inductance.

    Systems, methods, and apparatus to control welding electrode preheating

    公开(公告)号:US11344964B2

    公开(公告)日:2022-05-31

    申请号:US15618926

    申请日:2017-06-09

    Abstract: Systems, methods, and apparatus to control welding electrode preheating are disclosed. An example consumable electrode-fed welding-type system includes a welding-type current source configured to provide welding-type current to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch; an electrode preheating circuit configured to provide preheating current through a first portion of the welding-type electrode via a second contact tip of the welding torch; an electrode preheating control circuit configured to adjust at least one of the preheating current or an electrode feed speed based on the change in the contact-tip-to-work-distance; and a current interpreter configured to determine a change in a contact-tip-to-work-distance of the welding torch based on at least one of the welding-type current or the preheating current.

    Systems, Methods, and Apparatus to Preheat Welding Wire

    公开(公告)号:US20210245289A1

    公开(公告)日:2021-08-12

    申请号:US17132712

    申请日:2020-12-23

    Abstract: A contact tip assembly with a preheating tip comprises a welding-type power source configured to provide welding-type current to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch; an electrode preheating circuit configured to provide preheating current through a first portion of the electrode via a second contact tip of the welding torch; and a preheat controller to: monitor a voltage drop across a second portion of the electrode; adjust at least one of the welding-type current or the preheating current based on the voltage drop, the second portion of the electrode comprising at least part of the first portion of the electrode; and control the preheating current based on a hydrogen reduction goal and based on stored parameters associated with a type of the electrode, a chemistry of the electrode, or a wire size.

    Systems, methods, and apparatus to reduce cast in a welding wire

    公开(公告)号:US11020813B2

    公开(公告)日:2021-06-01

    申请号:US15703008

    申请日:2017-09-13

    Abstract: Systems, methods, and apparatus to reduce cast in a welding wire are disclosed. Example systems to reduce cast in a welding wire include a wire advancement roller configured to advance welding wire from a welding wire supply toward a welding torch; and a wire straightener configured to reduce cast in the welding wire by applying heat to the welding wire between the welding wire supply and the welding torch.

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