WELDED BLOCK PLATE HEAT EXCHANGERSProcess heating · Cooling · Condensation · Heat recovery
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PANSTAR welding equipment and close-up of the welding operation
PANSTAR CORE TECHNOLOGY

Laser Welding Technology

Automatic laser welding forms the HEXCBLOC welded plate pack. Controlled weld penetration creates the joints that keep hot and cold flow channels separate.

  • Concentrated heat input
  • Narrow heat-affected zone
  • Controlled penetration
CONSTRUCTION

HEXCBLOC construction

Exploded HEXCBLOC construction with six numbered component groups
  1. 1

    Plate pack

  2. 2

    Upper & lower headers

  3. 3

    Removable side panels

  4. 4

    Panel seals

  5. 5

    Columns

  6. 6

    Support feet

WORKING PRINCIPLE · INTERACTIVE 3D

Open the block.
Follow the flow.

Rotate the assembly, open the casing or switch to Flow principle to follow the two separate circuits.

PLATE TECHNOLOGY

Laser Welding Technology

TIG welding · Argon arc

TIG weld cross-section supplied by PANSTAR

Broader fusion profile in the illustrated sample.

VS

PANSTAR · Laser Welding

Laser weld cross-section supplied by PANSTAR

Concentrated fusion profile in the illustrated sample.

Concentrated heat input

A focused laser can produce a deep, narrow weld with less heat spreading into the surrounding plate.

Narrower heat-affected zone

Localized heating helps limit distortion and thermal changes beside the weld.

Controlled penetration

Joint fit-up and welding parameters are selected to achieve the required fusion through the joint.

Tensile testing of a welded plate specimen
Welded specimen under tensile testing
PENETRATION & JOINT STRENGTH

Deep fusion. Joint strength testing.

Weld penetration cross-section with the fusion zone marked

2 mm penetration in the shown sample

PANSTAR’s supplied material reports 2 mm weld penetration and specimen weld strength above the parent material. The photographs illustrate the sample and test setup; a numerical strength result is not provided.

Penetration alone does not establish strength. Production acceptance depends on material, joint geometry, welding procedure and inspection results.

Images and sample claims: PANSTAR supplied technical material. Laser welding principles · TWI

PLATE WELDING · ANIMATED PRINCIPLE

How the welded channels are formed.

Alternate plate edges are welded to form separate hot and cold channels. The animation shows the weld sequence and open flow passages.

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