Ultime Novità

Resta aggiornato con le novità di Linqi Ultrasonic, le tendenze del settore e gli approfondimenti tecnici

100 articles

2026-09-10

Locating Accuracy and Repeatability Are Not the Same Thing

A location that is off but off by the same amount every time can be compensated. One that is off differently each time is the yield killer, and that is what ultrasonic welding suffers from.

Quick-Change Tooling: Changeover Costs More Than Welding

Technical

2026-09-10

Quick-Change Tooling: Changeover Costs More Than Welding

A weld takes seconds and a changeover takes half an hour. On a high-mix line what eats capacity is changeover, not cycle time.

How Far From the Weld Should an Insert Sit

Technical

2026-09-10

How Far From the Weld Should an Insert Sit

A metal insert is a step change in stiffness and a heat sink. Too close to the joint, it diverts energy, concentrates stress, and can be shaken loose during welding.

Snap Fits Plus Welding: Which One Carries the Load

Technical

2026-09-10

Snap Fits Plus Welding: Which One Carries the Load

Using both is usually not redundancy but interference. Snap fits that close first hold the weld faces apart, and the collapse during welding then pulls the snaps past their intended position.

Fixture Material: Steel, Aluminium or Polyurethane

Technical

2026-09-10

Fixture Material: Steel, Aluminium or Polyurethane

A fixture has to support the part, avoid marking it and avoid absorbing the energy. Each of the three common materials covers two of the three, so the choice is a trade-off.

Holding Consistency Across a Multi-Cavity Tool

Technical

2026-09-10

Holding Consistency Across a Multi-Cavity Tool

If cavity-to-cavity variation is the same order as the interference, the joint dimension on the drawing does not exist in production. Measure the spread first, then fix the joint.

Designing the Joint on a Part With Uneven Walls

Technical

2026-09-10

Designing the Joint on a Part With Uneven Walls

Director height follows wall thickness, so where the wall varies along the joint a single height cannot run all the way round. Leaving it produces flash in one section and no fusion in another.

Shrinkage and Warp: Half the Result Is Decided Before Welding

Technical

2026-09-10

Shrinkage and Warp: Half the Result Is Decided Before Welding

The gap between two halves cannot be identical all round. The joint has to absorb that variation and the fixture has to bring the part to shape before welding; beyond those two it is a moulding problem.

What Happens When a Rib Lands on the Weld Line

Technical

2026-09-10

What Happens When a Rib Lands on the Weld Line

A rib provides stiffness and also a bypass for the energy. A rib landing behind the weld line diverts the vibration, spreads the force, and leaves a sink mark and stress at its root.

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