| Specifications | Structural Bonding: dinan |
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| Specifications | Structural Bonding: dinan |
| Business section |
| Specifications | Structural Bonding: dinan |
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| Content | Structural Bonding: The Hidden Costs of “Instant” Assembly By Tom Buckley, Market Application Engineer, Henkel Corporation, 2010 To manufacturers, time is money. Their ultimate goal is to make the manufacturing processes better, faster and more cost effective while preserving the integrity of the assembly process and the quality of the end product. For a range of structural assembly applications, traditional fastening methods like rivets, screws, welds and double sided tapes offer manufacturers and assemblers one major benefit – instant fixture. Some manufacturers actually avoid using liquid adhesives because of the time required for an adhesive to fixture before the assembly can be moved on to the next processing step. While liquid adhesives are available in a range of technologies with widely varying cure times from seconds to hours, they all require a cure process. This article will explain the costs associated with adhesive assembly and compare them to the overall costs of instant assembly techniques. Although unknown to many, instant assembly methods involve hidden costs - for example, skilled labor required for welding, labor and time needed to apply screws or rivets, and the surface preparation and scrap associated with double-sided tapes. Assembly Methods Four major assembly methods exist in today’s manufacturing environment: Thermal methods such as spot- or overlap-welding* Mechanical fasteners such as bolts, screws, or rivets* Double-sided tapes* Liquid adhesives * - Considered “Instant” assembly methods The first three assembly methods on the list above are considered “instant” assembly methods. All four of these methods are used with varying degrees of effectiveness depending on the final application, end use requirements, and environmental constraints such as weather, moisture, salt or chemicals. Figure 1 shows an overview of the shear strength performance over a one square inch fastening area for these assembly methods. Henkel Corporation www.henkelna.com/loctitestructurals Page 1 of 7 |
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