**7.6 How to identify application**

It is critically important to understand the exact requirements of each application in order to provide a right solution. There are 10 key questions to ask to clarify and identify the application situation and requirements.

Application: this is the first question to clarify what is the configuration of the application such as thread locking, thread sealing, etc.

Material: depending on the material, products to recommend can vary as it will affect cure speed and strength such as mild steel, stainless steel, etc.

Dimension (size): depending on the size of application, a different bonding technology can be selected.

Bond line gap: each technology and its products have different gap filling capabilities.

How to assemble parts: depending on the shape of application and production cycle, products to recommend may change.

Fixture time: this will give us a choice of selecting a right product and/or right primer or heat depending on the requirement.

Need to maintenance: this can help select a right product as there are repairable strength product and permanent strength product.

Load: depending on a different type of load and its direction, a proper product can be chosen.

Environment: depending on the different chemical requirements, a proper product can be selected such as temperature, chemicals, etc.

Dispenser: those fittings and feedlines that come in contact with adhesive should be compatible in order not to affect product negatively.

### **8. Pre-applied thread locking adhesive**

For some applications that they do not want a liquid chemical available in their workshop or their assembly line is automated with fasteners feeding so cannot use a dispensing but want to increase the reliability and reduce an assembly cost, preapplied thread locking adhesive is available in the market. It contains microcapsules within the dry-to-touch coating. When the parts are assembled, the microcapsules will crush and release the active ingredient, and the adhesive will cure like a liquid anaerobic having a similar break loose strength and resistance to various chemicals. This adhesive coating has a designated color for each product that provides a guideline on quality check even before and after assembly. As this is a water-based product, it is environment friendly and no need to install ventilation or no need to receive authority's regular solvent smell inspection. It also has a good lubrication during assembly. Coating machines and types are available in the market depending on the quantity to be coated, and it also provides a long storage shelf life after coating [2].

#### **9. Conclusions**

Liquid anaerobic thread locking adhesive can allow the mechanical assembly industry to solve various issues that have been present for a long time whether it was recognized by them or not. It can save the overall assembly cost and increase the reliability of their assembly making their product more competitive in the market place. For performance wise, it not only locks against vibration, shock, and thermal cycling but also seals against corrosion and galling. Medium strength adhesive can be easily disassembled by simple tool. It also provides better clamp load retention than all mechanical locking devices. For cost-saving wise, it provides threaded assemblies that can reduce a costly downtime. "One size fits all" can be universally applicable for a wide range of fastener sizes. Its ease of automation reduces assembly costs and increases throughput. It has lower cost per unit than most conventional thread locking fasteners.

**135**

**Author details**

Chulsoo Woo

provided the original work is properly cited.

Henkel (China) Investment Co., Ltd, Shanghai, China

\*Address all correspondence to: cs.woo@henkel.com

*Liquid Thread Locking Solution for Machinery Assembly Industry*

*DOI: http://dx.doi.org/10.5772/intechopen.85090*

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

*Liquid Thread Locking Solution for Machinery Assembly Industry DOI: http://dx.doi.org/10.5772/intechopen.85090*

*Adhesives and Adhesive Joints in Industry Applications*

cycle, products to recommend may change.

primer or heat depending on the requirement.

strength product and permanent strength product.

product can be selected such as temperature, chemicals, etc.

be compatible in order not to affect product negatively.

**8. Pre-applied thread locking adhesive**

technology can be selected.

capabilities.

can be chosen.

**9. Conclusions**

tional thread locking fasteners.

application such as thread locking, thread sealing, etc.

affect cure speed and strength such as mild steel, stainless steel, etc.

Application: this is the first question to clarify what is the configuration of the

Material: depending on the material, products to recommend can vary as it will

Dimension (size): depending on the size of application, a different bonding

How to assemble parts: depending on the shape of application and production

Fixture time: this will give us a choice of selecting a right product and/or right

Need to maintenance: this can help select a right product as there are repairable

Load: depending on a different type of load and its direction, a proper product

Dispenser: those fittings and feedlines that come in contact with adhesive should

For some applications that they do not want a liquid chemical available in their workshop or their assembly line is automated with fasteners feeding so cannot use a dispensing but want to increase the reliability and reduce an assembly cost, preapplied thread locking adhesive is available in the market. It contains microcapsules within the dry-to-touch coating. When the parts are assembled, the microcapsules will crush and release the active ingredient, and the adhesive will cure like a liquid anaerobic having a similar break loose strength and resistance to various chemicals. This adhesive coating has a designated color for each product that provides a guideline on quality check even before and after assembly. As this is a water-based product, it is environment friendly and no need to install ventilation or no need to receive authority's regular solvent smell inspection. It also has a good lubrication during assembly. Coating machines and types are available in the market depending on the quantity to be coated, and it also provides a long storage shelf life after coating [2].

Liquid anaerobic thread locking adhesive can allow the mechanical assembly industry to solve various issues that have been present for a long time whether it was recognized by them or not. It can save the overall assembly cost and increase the reliability of their assembly making their product more competitive in the market place. For performance wise, it not only locks against vibration, shock, and thermal cycling but also seals against corrosion and galling. Medium strength adhesive can be easily disassembled by simple tool. It also provides better clamp load retention than all mechanical locking devices. For cost-saving wise, it provides threaded assemblies that can reduce a costly downtime. "One size fits all" can be universally applicable for a wide range of fastener sizes. Its ease of automation reduces assembly costs and increases throughput. It has lower cost per unit than most conven-

Environment: depending on the different chemical requirements, a proper

Bond line gap: each technology and its products have different gap filling

**134**
