How can weld distortion be controlled?
Clamps, jigs, and fixtures that lock parts into a desired position and hold them until welding is finished are probably the most widely used means for controlling distortion in small assemblies or components.
What is distortion control lens data?
When distortion control is applied to an image either in-camera or through software it corrects barrel or pin cushion distortion that occurs in images due to the characteristics of specific lenses. The Distortion Control data in camera can be updated to include data for the latest lenses from the Download Centre .
What is presetting in welding?
Pre-bending, or pre-springing the parts before welding is a technique used to pre-stress the assembly to counteract shrinkage during welding. As shown in Fig 2, pre-bending by means of strongbacks and wedges can be used to pre-set a seam before welding to compensate for angular distortion.
How do welders prevent heat distortion?
Heating the part evenly in an oven or through alternative means can help reduce distortion. Strong work holding solutions that hold parts firmly in place can also assist with distortion. Increasing the amount of a material that the heat can flow into around a weld can also dramatically help reduce distortion.
What causes warpage distortion?
Inherent Stresses Within Steel The most commonly distorted members of assemblies is that of sheet or plate which is ¼ in thickness or less the lighter the gauge of the steel, the greater the risk of warpage/distortion. Flatten sheet/plate using a jig or by weighing the product down on a flat surface during cool-down.
What does auto distortion control mean?
Explanation: „Distortion“ means that a lens will project a straight line into a slightly bended one on your picture – how much is dependent on your lens and in case of zoom lenses also of the focal length. The auto distortion control enables a correction.
What is Optical VR?
Glossary. Vibration Reduction (VR) is an image stabilization technology that minimizes blur caused by camera shake. Using a VR NIKKOR lens can result in sharp images in low light, under windy conditions or when using a physically large NIKKOR lens, at up to four stops slower with a VR lens than a non-VR lens.
What are the main causes of distortion?
The principal factors affecting the type and degree of distortion, are:
- Parent material properties.
- Amount of restraint.
- Joint design.
- Part fit-up.
- Welding procedure.
How do you reduce distortion?
The following design principles can control distortion:
- eliminate welding by forming the plate and using rolled or extruded sections.
- minimise the amount of weld metal.
- do not over weld.
- use intermittent welding in preference to a continuous weld pass.
- place welds about the neutral axis.
Why does step back welding reduce distortion?
However, as the heat moves out, expansion along the edges brings the plates back together. Successive beads cause the plates to expand less and less throughout the process because of the restraint that the prior welds cause. This technique minimizes distortion as the welding process goes on.
How do you overcome distortion in communication?
Avoid Using Abstract Words, Jargon and/or Slang: The more concrete your word choices; the less likely your meaning can be misconstrued or miscommunicated. Get Feedback & Monitor the Links in the Communication Chain: Solicit feedback along the communication chain to ensure that your message was understood.
How can I update distortion control on my camera?
The Distortion Control data in camera can be updated to include data for the latest lenses from the Download Centre . Please ensure the cameras firmware is updated first to support the latest version of Distortion Control Data. A list of compatible lenses is available from the download pages.
How to save the distortion control lens data?
Save the file to the folder created in Step 3–1. 3 Open the f older created in Step 3–1 and double-click the downloaded file (“F-DCDATA-20##W.exe”, where “##” is the distortion control data version) to extract the firmware to a sub-folder in the new folder. : F-DCDATA-20##W.exe The resulting file and folder hierarchy is shown below:
When is distortion control applied to an image?
What is Distortion Control? When distortion control is applied to an image either in-camera or through software it corrects barrel or pin cushion distortion that occurs in images due to the characteristics of specific lenses.
How are fabrication techniques used to prevent distortion?
The following fabrication techniques are used to control distortion: 1 using tack welds to set up and maintain the joint gap 2 identical components welded back to back so welding can be balanced about the neutral axis 3 attachment of longitudinal stiffeners to prevent longitudinal bowing in butt welds of thin plate structures
