Technical Articles

Types of Threadlockers

by Andy on February 18, 2013

Liquid Threadlocker

This is your normal threadlocker, used for general purposes. There are a wide variety of liquid threadlockers in low, medium, and high strengths. This allows for a great versatility, whether you need to just prevent movement from vibration or a permanently affix a bolt to a hole.

Gel Threadlocker

Gels are used when you need to close a larger gap between the screw and the threads. This is especially helpful for larger screws, as it provides an even stronger bond than normal liquid threadlockers. It also helps prevent the dripping and mess associated with liquid threadlockers.

Stick Threadlocker

If you have a bolt that cannot have any liquid dripping off of it then a stick threadlocker may be best suited for your need. The stick threadlocker has the consistency of a wax-like semi-solid that is packaged like a traditional glue stick.

Tape Threadlocker

Tape threadlockers are another non-liquid alternative, and they provide a great bond in an easy to use substance. One extra benefit to tape threadlockers is that they only cure when confined between close fitting metal surfaces in the absence of air. This means you can apply them to your screws days before they are assembled, to streamline your assembly process.

Have any more questions on threadlockers? Leave a comment below or visit our website at www.All-Spec.com!

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How To Set Up Your Hakko FX-888D Parameters

by Andy on February 11, 2013

Hakko FX-888D Digital Soldering StationHakko has put out a new digital unit to replace the FX-888, and with it comes some great features such as preset temperatures. However, there are a few steps that you need to go through to be able to get the most out of your system. In this article we will look at how you can set your parameters with the Hakko FX-888D to get your system up and running to your exact specifications.

To enter the parameter selection mode you must start with the FX-888D turned off. Then hold the up button while turning on your machine. This will start the FX-888D in the parameter entering mode, and you will know that you are in the correct place when the display shows “01”. While entering parameters, pressing the up button will change the value, and pressing the enter button will select the setting and move on to the next parameter.

The first parameter to set is Celsius or Fahrenheit, with Fahrenheit being the set default. Once you select this you move onto the low temperature error setting. This can be set between 54-270°F (30-150°C), and will cause an error message to be displayed if the unit falls below this temperature during use. 270°F is the default for this setting.

Next is the setting mode selection. This allows you to choose either 0 for normal or 1 for preset temperatures. When in normal mode you can switch the temperature to any custom level. In preset mode you can quickly swap between up to five preset temperatures. If you select the preset mode then you select how many presets you want, from two to five.

Lastly is the password setting, which can be set to be 0 for open, 1 for partial, and 2 for restricted. The open mode lets anyone use the system without a password, and restricted means that you need a password to change any setting. If you select partial, then you can select if you need a password on temperature setting mode, preset mode, and adjust mode. Lastly, if you select the partial or restricted modes then you can put in the password, a three letter combination of the letters A through F.

Those are all the settings that you can change in the parameter set up. By going through these settings you can ensure that your Hakko FX-888D is working how you intend. Also, this will make your station work as fluidly as possible. Have any more questions about your FX-888D? Call Customer Service at (800) 537-0351, or leave a comment below!

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How to Calculate Torque

by Andy on January 28, 2013

64-094 Click Type Adjustable Torque Wrench with Ratcheting HeadWhen looking for torque tools, you may notice that a big consideration is the torque range. Torque range is important, as it shows the minimum and maximum power that the tool can put out. Most of the time, selecting the torque is as simple as matching a number on your product and your torque driver, but you may wonder where that number comes from. Also, the units for torque seem rather odd by most standards, as they combine a length (typically feet, inch, or meter) with force (pounds or newtons). Luckily, the answer to how to calculate torque can also help you understand why torque uses foot pounds or newton meters as their units!

Torque is force on an object that is created by twisting or turning it, so it is easiest to think of as a wrench turning a bolt. To calculate torque you take the amount of pressure and multiply it by how far away from the application point. For the purposes of our calculation, the amount of pressure is how hard you push the wrench and the distance from the application point is how far your hand is from the bolt.

If you applied 10lbs of force at 1 foot away then you would get:

10lbs X 1ft = 10ft.lbs

Now, you can see that your overall torque will change if you apply the pressure closer to or further away from the screw:

10lbs x 0.5ft = 5ft.lbs

10lbs x 2ft = 20ft.lbs

The further the force is from the point of application, the stronger the torque becomes. Alternately, you can say that it takes less pressure further away from the point of application to apply the same overall torque.

This is why we use wrenches to turn bolts, as it allows you to use much less pressure to turn a screw than just using your hand. If you needed 1ft.lbs to turn a screw, and your point of application was 1 inch away then it would take you 12lbs of pressure, as opposed to the 1lb of pressure from 1 foot away.

Also, this shows why you use units like ft.lbs, as you are saying how many pounds of pressure you need to use to turn the object at a point 1 foot away from the point of application. If you are dealing with smaller units of torque then you may use in.lbs. (inch pounds) or in.ozs (inch ounces), and when using the metric system you typically use Nm (newton meters) or Ncm (newton centimeters).

Do you have any other questions on torque? Leave a comment below! Thank you for reading, and be sure to check out our site at www.All-Spec.com for more information on specific products.

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Loctite 7649 PrimerWhen you decide which adhesive to use you may first look between various sealants, instant, or pressure sensitive adhesives, but there can be much more to the equation. Many times you need primers, activators, or accelerators to help affix difficult materials. Each of these help set up your material or adhesive to ensure the best bond possible between even the most difficult surfaces.

Before you use any primers, activators, or accelerators, make sure to check all directions from the manufacturer. Each product is formulated differently and can be used with different types of adhesives. For best results only use these products with the materials and adhesives specified by the manufacturer.

Primers

Primers are put on the material before you use the adhesive and help treat the materials that you are bonding. This allows for greater adhesion, even on tough materials. Primers can also assist in speeding up anaerobic adhesives, giving a way to ensure fast bonding even when you can’t get to fixture point after application.

Activators

Activators are applied either before or during adhesion to start or speed up the bonding process. This is used primarily on anaerobic adhesives, but can also work with some miscellaneous adhesives. Activators also help adhesives work when there are larger bond gaps.

Accelerators

Accelerators do exactly what you would think that they would: speed up cure times for specific adhesives. What sets accelerators apart is when you apply them. Typically accelerators are applied after the adhesive, increasing the cure speed during the bonding process.

That wraps up our series on types of adhesives! Have any questions or comments? Leave a message below!

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Loctite 49550 Instant AdhesiveToday’s article is the second in our Types of Adhesives series, now focusing on instant and pressure sensitive adhesives.

Instant adhesives are pretty straight forward and act as you would think from their name. These adhesives are used when you need short cure times to quickly bond two materials. To get a full cure you may need to wait up to 24 hours, but the fixture cure time can range from 90 seconds all the way down to 2 seconds depending on the material and adhesive. This allows you to affix two objects or materials quickly so that you can let them sit for a longer period by themselves for the full cure.

Pressure sensitive adhesives work in a very different way from instant adhesives. When using pressure sensitive adhesives you have to first apply it to one of the two surfaces that you want to join. Then you let the adhesive sit and it will start to become tacky and thicken. Once the adhesive dries and becomes tacky then you can press the second surface against the first, creating the bond. This makes pressure sensitive adhesives perfect for when you need to set up your adhesive to be assembled at a later point. Pressure sensitive adhesives also work on a wide variety of surfaces, giving you a wide range of use.

Join us again next week for our final segment on adhesives! Interested in learning about sealants? Check out last week’s blog post here for more information. Be sure to leave a comment below if you have any questions!

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