ACR Journal

  • Home
  • UK
  • International
  • Features
    • Blogs
  • What's New?
    • Subscribe
  • Advertise
  • Heat Pumps
  • Home
  • UK
  • International
  • Features
    • Blogs
  • What's New?
    • Subscribe
  • Advertise
  • Heat Pumps

News

Tools Talk: Cutting Edge

31/7/2018

 
javac edge tube expander acr tools pipework
The JAVAC EDGE expander is precision machined and used with the EDGE tube cutter, below, can create the perfect joint
javac edge tube cutter acr tools pipework
The JAVAC EDGE tube cutter
Dave Kingston, Group Training Officer at Aspen Pumps, says choosing the right tools can help achieve the perfect joint.

Traditionally, the method of joining two pieces of copper tube together is by using a standard tube expander and brazing the joint. When expanding a tube, ensuring that the result creates a straight clean expansion, means less chance of a sloppy fit and the joint falling apart during assembly. By expanding one end and sliding the other tube into it, there is only one join to braze; this results in less chance of a refrigerant leak. 
A problem with expanding copper tube is that it often results in the copper splitting. Often this is blamed on the quality of the tubing or the tools. This is understandable given the random pressures and adjustments required to operate the tools and the skill and experience of the engineer determines to outcome.

With standard tube cutters, spinning the cutter round the tube and turning the handle periodically tends to crush the cutting wheel into the copper and this is the only way to increase the cutting depth. However in the process of this that crushing affect tends to deform the edge and tapers in towards the centre, creating an internal burr. This is perfect lead in for a cut tube to slide into an expanded piece. Sliding an expander straight into the end of a cut tube is impossible due the deformation and burr. An internal reamer will cut out the burr and most expanders have a step that can be used initially to expand the burr and restore the diameter; both allow the expander to slide in properly. 

Precision
Whichever processes is used it cannot rectify the crushing effect of a standard cutter and it’s this that causes the rim edge to work harden. Immediately any tube expander is brought into play that small amount of hardening is all that’s required to start the edge cracking; resulting in a full split down the length as the tube is expanded.   

The JAVAC EDGE tube cutting range eliminates the requirement for tube reaming or any pre-expansion to remove a burr, simply because of the unique way it cuts the copper tube. The patented adjustable tension setting eliminates the tube edge from being crushed by automatically increasing the adjustment in a controlled way. This maintains the internal tube diameter and in turn protects the cutting wheel from excess pressure and keeping it sharp for much longer than a conventional wheel cutter.

By combining the use of the EDGE tube cutter, set at the correct tension, and an EDGE tube expander, a perfect joint can be created every time; something the refrigeration industry has not been able to consistently achieve previously. 

This makes the whole process easier, faster and eliminates possible breakdowns due to poor joins. It also makes assembling pieces of tube prior to brazing much easier, due to a perfectly tight joint every time.

The JAVAC EDGE expander is precision machined from high grade materials so its accuracy and repeatability is guaranteed. Simply compressing the handles until they stop is enough to create a perfect expanded joint.

www.javac.co.uk
Picture

Comments are closed.

    News

    Picture
    Subscribe to the ACR Journal

    RSS Feed

    Topics

    All
    360
    A2l
    A410a
    Acoustics
    Acr
    ACU
    Advice
    Ahu
    Air Conditioning
    Air Cooled
    Air Curtain
    Air Filtration
    Air Handling
    Air Handling Unit
    Air Intake
    Air Management
    Air Movement
    Air Source
    Ammoinia
    Ammonia
    Ancillary Products
    Appointment
    Appointments
    Apprentice
    Apprentices
    Australia
    Awards
    BIM
    Birmingham
    Blast Freezer
    Bms
    BRA
    Branch
    Brexit
    Building Controls
    Building Information Modelling
    Building Regulations
    Building Services
    Cabinet
    Cabinets
    Cambodia
    Careers
    Cassettes
    Catering
    Cfd
    Changing Faces
    Charity
    Chilled Beams
    Chilled Counter
    Chilled Water
    Chillers
    Chillventa
    Chilly Chatter
    China
    Cleaning
    Co2
    Cold Room
    Cold Storage
    Cold Store
    College
    Comfort Cooling
    Commercial
    Community
    Compact
    Companies
    Competition
    Compliance
    Component
    Compressor
    Compressor Pack
    Compressors
    Condensate
    Condensate Pump
    Condensers
    Condensing Unit
    Conference
    Construction
    Consultant
    Contract
    Contractor
    Contractors
    Controls
    Cooler
    Cooling
    Cooling Towers
    Copper
    Course
    CPD
    Cryogenics
    Curtains
    Customers
    Cylinder
    Darts
    Data
    Data Centre Cooling
    Dehumidifier
    Design
    Dinner
    Display
    Distribution
    District Heating
    Diversity
    Drives
    Dubai
    Ductwork
    DX
    Education
    Electrical
    EMS
    Energy Efficiency
    Engineeering
    Engineer
    Engineering
    Engineers
    Environment
    Equipment
    ETL
    Europe
    Evaporators
    Events
    Export
    Extract Fan
    Fan Coil
    Fans
    Feta
    F Gas
    F-gas
    Filter
    Fire Detection
    Fittings
    Flame Free
    Flexi
    Food
    Food Processing
    Frame
    France
    Free Cooling
    Freezer
    Fresh Produce
    Gantry
    Gas
    Germany
    Ghp
    Glasgow
    Golf
    Government
    Green Energy
    Grenfell
    Ground Source
    Guides
    GWP
    Hampshire
    Health
    Heat Exchangers
    Heating
    Heat Networks
    Heat Pumps
    Heat Recovery
    Heat Transfer
    Hfc
    HFO
    Holland
    Hot Water
    HRS
    Humidification
    Humidity Control
    Hvac
    Hybrid
    IAQ
    Ice Rink
    Impeller
    India
    Indoor Air Quality
    Indoor Unit
    Industrial
    Infection
    Install
    Installation
    Installations
    Installer
    Installers
    Instrument
    Insulation
    International
    Inverter
    IOR
    Ireland
    Italy
    Joints
    Kitchen
    Late Payment
    Leak
    Leak Detection
    Legionella
    Legislation
    Liquid Chillers
    Logistics
    Low Carbon
    Low Gwp
    Maintenance
    Manifold
    Manufacturer
    Manufacturing
    Marine
    Marketing
    Mechanical
    MEES
    Membrane Pump
    Middle East
    Midlands
    Monitoring
    MVRH
    Natural Refrigerants
    Newcastle
    Norfolk
    Obituary
    Office
    Oil Drain Vessel
    Oil Free
    Ordering
    Packaged Unit
    Parts
    Passive House
    Payment
    Pharmaceutical
    Pipes
    Pipework
    Plant
    Platform
    Plumbing
    Pollution
    Power Generation
    Power Quality
    Ppm
    Press Fit
    Process Cooling
    Product
    Project
    Public Relations
    Pumps
    Quad
    Qualifications
    R22
    R32
    R410a
    Rachp
    Reciprocating Compressor
    Reclamation
    Recovery
    Recruitment
    Refrigerant Recovery
    Refrigerants
    Refrigeration
    Refurbishment
    Regulations
    Renewables
    Rental
    Research
    Residential
    Retail
    Retentions
    Retirement
    Retrofit
    Rewards
    Roof
    Rooftop
    Russia
    Safety
    Sales
    Sales Engineer
    Samsung
    Scales
    Scotland
    Screw
    Screw Compressor
    Scroll
    Sdi
    Sealant
    Seer
    Selfbuild
    Separator
    Service
    Service Engineer
    Shopping
    Show
    Skills
    Smart
    Smart Buildings
    Smart Controls
    Social Housing
    Software
    Specifiers
    Spiral Freezer
    Splits
    Split System
    Sponsorship
    Stratification
    Supermarket
    Supplier
    Supply Chain
    Support
    Sustainability
    Technical
    Temperature Control
    Temperature Contrrol
    Testing
    Thermal Energy
    Tools
    Tools Talk
    Trade Counter
    Trainee
    Training
    Tran
    Transport Refrigeration
    Triple
    Tube
    Twin
    UK
    Vacuum
    Valves
    Ventilation
    Vietnam
    Vrf
    Vrv
    Vsd
    Wall
    Wall Mounted
    Warranty
    Waste Water
    Water Cooled
    Water Treatment
    Wellbeing
    Wholesale
    Wind Free
    Wireless
    Women In ACR
    Women In RACHP

Follow

Subscribe
Heat Pumps Today
Follow us on social media
Tweets by @ACRJournal

Support

​Cookies
Privacy
Terms of Use
Contact
Advertise

Company

About
The Company
Warners Group Publications
© COPYRIGHT 2016
ALL RIGHTS RESERVED.