Intermittent motion, Mechanical Engineering

Intermittent motion

Most seam welding machine requirements are met by the use of continuous drive. However, in cases where heavy work parts are to be welded or more than a single weld pulse is required (for example, where it is necessary to apply preheat and quench and temper times or long weld times) intermittent motion must be used in order to retain electrode force over the weld nugget while the weld is being completed. Continuous motion would result in premature release of electrode force and therefore cause cracking, porosity and unacceptable welds. The work travels between the electrodes the distance required for each succeeding weld increment. The work stops during the quench and temper time where it is not required to move the job. The portable welding head is moved by motor driven wheels and air cylinder mechanism provides the electrode force. Standard seam welding machines are classified by throat depth.

Posted Date: 9/17/2012 5:46:12 AM | Location : United States







Related Discussions:- Intermittent motion, Assignment Help, Ask Question on Intermittent motion, Get Answer, Expert's Help, Intermittent motion Discussions

Write discussion on Intermittent motion
Your posts are moderated
Related Questions
A load of 2MN is applied on a short concrete column 500 mm x 500 mm. The column is reinforced with four steel bars of 10 mm diameter, one in each corner. Evaluate the stresses in t

discuss the main components of computer aided manufacturing

AEROSPACE APPLICATIONS   The need for EBW as a critical fabrication process in realising elements and assemblies for spacecraft and launch vehicle programmes due to the foll

I am studying in Final Year of Engineering(Mechanical) and I would like some help for the project. It will be helpful if you suggest some project related to Automation.

(a) Draw neatly and accurately the Merchant force circle diagram. Mention clearly the forces involved, the constructional steps and the assumptions made [do not derive the forces]

Stitch welding Here, a series of overlapping spot welds are made with the spot welding machine using the conventional electrode tip. Both water tight and gas tight joints can b

Calculate the amount of cement, sand, aggregate, and water needed to create a concrete mix with a 28-day compressive strength of 34 MPa for a 10 m x 10 m x 0.25 m structure given t

Use s of Carnot Cycle: 1. It helping us to appreciate what factors is desirable in the design of practical cycle; namely a maximum possible temperature range. 1 maximum p

Two insulated and identical tanks are filled with nitrogen.  One tank is at 1 bar, 250 o C and the other is at 5 bar, 25 o C.  If the two tanks are connected with a pipe and the v

Q. Soil conditions for plant layout? Soil conditions affect the foundation requirements, drainage, type of substructure used and may limit the size and shape of the facility. T