AppMo sortiment

7/31/2019 AppMo sortiment

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Meets PED using the harmonising standard EN 10269

Meets requirements for high temperatures (+500 0C )

Meets, by a good margin, property cla

Meets ASME SA320/ASTM A320 Grade L7, Impact strength tested at -101 0C

Meets ASME SA193/ASTM A193 Gra

Certificate with full traceability and identification

Individual marking if necessary

Geometry in accordance with ISO 401

Dimensions M20 M90 for lengths up to 450 mm

Geometry in accordance with ISO 476

Dimensions M20 M56 for lengths up to 450 mm

Development and manufacture in Swe


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So says Peter Fjordman, CEO of Appro and expert on assemblies within industries with stringent safety require-

ments. He continues,

The shipbuilding and energy crises of the 1970s resulted in the manufacture of fasteners moving abroad. The

demands for low costs within industry today have created room for cheap, imported fasteners of varying quality.

AppMo is our response, in partnership with Momento, to the increased risk of accidents and total costs that have

resulted from this.

For some time now, Peter Fjordman along with Torbjrn Palmberg, CEO at Momento, a world leader in the manufac-

ture of impact sockets, have been discussing the difficulties facing Swedish companies when it comes to having

complete control over quality when production takes place abroad. This debate has now moved from words to action

with the launch of AppMo.

When production moved abroad, power over the selection of fasteners also shifted from engineers and technicians

to economists and buyers. This has resulted in low price taking precedence over technical performance. And great

distances in terms of geography, language and especially culture have also made it difficult to maintain consis-

tently high quality, says Fjordman. Unfortunately, even here in Europe, the focus has been on price rather than

quality and the best overall solution. Cheap is far too often costly when it comes to optimising the manufacturing

cost. The life of the product and also the safety aspect should also be weighed into the overall calculation. With this

approach, we want to show that companies that with the right impact socket and screws, assembly costs can bereduced significantly, explains Palmberg.

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The dem consequently a dilution of responsibility

in compl ed, while a holistic approach is frequently

missing. Tight lead-times have certainly not helped matters.

The assemblies are not just about fasteners and impact sockets, they include everything from the design of parts

to be assembled to expertise among installers. You have to have a holistic approach, emphasizes Fjordman.

The many accidents within wind power over the past decade clearly illustrate this. One of the worlds largest ma-

nufacturers of wind turbines, for example, has set aside more than two billion kronor in warranty provisions. This is

more than half of its operating profit and five percent of turnover.

That is why Momento and Appro have assumed the task of educating not just our customers, but others in our

industry as well. If the wind power producers had adopted the holistic approach we advocate, many accidents could

have been avoided and large sums of money need not have been set aside in warranty provisions.

Appro abides by Peter Fjordmans advice. The company has close relationships with other key suppliers, such as ma-

nufacturers of hydraulic tightening tools in addition to impact sockets and lubricants, in order to be able to deliver

secure solutions for demanding assembly tasks.

The fact that Momento manufactures AppMo here in Sweden using Swedish steel results not only in more jobs, itallows us and our customers to feel reassured in terms of quality. In our future vision, the term MADE IN SWEDEN

will once again be synonymous with first-class quality, concludes Peter Fjordman.

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How To Verify Quality And Reduce Your Risk.

[email protected]


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For starters, every bolt has documentation attesting to its quality. Unfortunately, the documentation often doesnt

come close to telling the whole story. Different stages of bolt manufacturing occur all over the world, from steel

production to heat treating, threading, coating, and various levels of testing all too often with the bolts changing

hands repeatedly throughout the process. Quality can be compromised at any step along the way, but once the bolt

arrives at its final destination, the documentation wont always disclose that.

And you wont know it!

[email protected]


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[email protected]

CONFIDENCE COMES FROM COMPLETE CONTROL.Your operation cant risk the consequences of a bolt failure.

You have to nowthat youre getting bolts that live up to your performance

requ rements.

And the only way to ga n th s level of confidence s to make sure for yourselfthat quality is maintained throughout the manufacturing process.

This guide provides insight into the issues involved.

MISSION CRITICAL STAGES IN THE MANUFACTURE OF BOLTS

1. Steel Production

2. Positive Material Identification (PMI)

3. Heat Treating

4. Roll Threading

5. Laboratory Analysis


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[email protected]

Positive Material Identification (PMI): Before the bolt making process begins, any diligent manufacturer willperform PMI testing to verify that the material received from the steel mill is appropriate for the intended use, and

that it is manufactured to specification. This step is not always performed, but it should be. Quality, or lack thereof,

begins at the source and carries through to the final product.

Heat Treating:This is the most important and technically sophisticated part of the manufacturing process. Im-proper heat treating causes poor microstructure, which can result in hard and soft spots, weakness, and general

inconsistency that could result in steel characteristics far short of ISO, DIN or ASTM standards.

Roll Threading: This stage requires extreme precision. Inferior process control can result in poor thread geometry,faulty dimensions, erroneous lead and pitch, defective surfaces, and improper crest and root profiles. Any of these

errors can lead to bad fit, weakness, and failure.

Laboratory Analysis: This consists of a series of tests to verify that rigorous heat treating and threading methods

have been followed to produce quality, on-spec bolts. Tests should validate tensile and yield strength, elongationand reduction of area, proper Charpy impact values for low temperature applications, and thread geometric integri-

ty. There is much variation in the standards followed for this stage. The alarming fact is that some importers simply

pass on documentation from mills thousands of miles away without verifying the validity of the information.

Obviously, the more control you can gain over what happens at each of these stages, the more confidence youll

have in the final product. For example, if steel originates abroad but is finished in the EU, the manufacturer will

often take the liberty of giving the bolt the Made in EU label, which is misleading. Thus some companies are adop-

ting a purchasing model stipulating that all bolts be completely domestic, from the original steel to finishing. Other

companies are conducting on-site audits of steel mills and bolt manufacturing facilities to verify quality control

firsthand. You can also require your suppliers to furnish Mill Test Reports that certify the origin and quality of thesource steel, and Laboratory Test Reports that verify the quality of the finished bolts.

EVERY STAGE IS MISSION CRITICAL.A bolt may seem like a pretty simple item. Yet there are many steps that go into manufacturing it, and every one of

them has the potential to compromise quality and court catastrophic failure.

Steel Production: Much of the steel used in bolts is made Far East. Today, China is one of the main sources ofsupply, where there is little transparency in the manufacturing source or process. You simply dont know whether va-

cuum degassing and controlled diameter reduction have been employed important steps that reduce flaws in the

steel and make it cleaner and stronger. Thus there is high potential for non-conformance with recognized quality

standards, such as ISO, DIN or ASME.


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[email protected]

THE AppMo WAY.AppMo gives customers the high level of knowledge and control needed for true quality assurance. We source only

Swedish steel and handle every step in the manufacturing process thereafter. PMI, heat treating, threading and

laboratory analysis are all done in-house at our Flen manufacturing facility. Every step is performed according to

strict process controls, and we provide certified testing reports from the original mill and our own lab. We believe

this to be the highest obtainable level of bolt QA.

Reduce your risk.

Call +46-303 243440 or visit www.appmo.se. For more information regarding geographical sourcing issues, re-ques ourCountry of Origin publication.


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