Transcript Heating Zones

PYRAMAX™
Reflow System to Electronics Assembly
BTU Corporate
•Technology leadership in thermal processing
•Founded in 1950
•Publicly listed since 1989 NASDAQ (BTUI)
•Headquarter in Massachusetts, USA
•Operations in USA and China
BTU Product Portfolio
PYRAMAX™ - Reflow Oven
•Best choice for SPG and SMT customers
•Industry leading thermal performance
•Good quality
•Low cost of ownership
•High uptime
•Max throughput
•Flexible production and processing
•Premium warranty service
PYRAMAX™ Model Line-up
Model
Zones
Heating Cooling Atmosphere
150Nz12
12 top/bottom
150”
46”
Air/N2
150Az12
12 top/bottom
150”
48”
Air
125N
10 top/bottom
125”
46”
Air / N2
125A
10 top/bottom
125”
48”
Air
100N
8 top/bottom
100”
28”
Air / N2
100A
8 top/bottom
100”
24”
Air
75A
6 top / 3bottom
75”
24”
Air
PYRAMAX™ 75A Layout
Lip Vent
Exhaust
Heated Zones
6 Top / 3 Bottom
Optional Bottom Zones
2, 3, 4
Lip Vent
Exhaust
Cooling Section
PYRAMAX™ 100A Layout
Lip Vent
Exhaust
Onload
Area
Heated Zones
8 Top / 8
Bottom
Lip Vent
Exhaust
Cooling
Section
Offload
Area
PYRAMAX™ 100N Layout
Lip vent
exhaust
Lip vent
exhaust
Heating zones
8 top / 8 bottom
Cooling
Section
Low Nitrogen Package
Flux Management
PYRAMAX™ 125A Layout
Lip Vent
Exhaust
Heated Section
10 Zones
Lip Vent
Exhaust
Cooling Section
2 zones
PYRAMAX™ 125N Layout
Lip vent
exhaust
Heating zones
10 top / 10 bottom
Lip vent
exhaust
Cooling zones
2 top/2 bottom(optional)
Flux Management
Low Nitrogen Package
PYRAMAX™ 150Az12 Layout
Lip Vent
Exhaust
Heated Section
12 Zones
Lip Vent
Exhaust
Cooling
Section
PYRAMAX™ 150Nz12 Layout
Lip Vent
Exhaust
Heated Section
12 Zones
Low Nitrogen Package
Lip Vent
Exhaust
Cooling
Section
Flux Management
Process Chamber
• 350ºC Temp Rating
• Lead Free Ready
• Stainless steel
construction
• Easy access to blower
module
• 24 in. processing
capability
Heating Zones
Heating Element
Blower Outlet (Scroll)
Orifice Plate
Overtemp T/C
Control T/C
Heated Zone
3 phase Blower Motor
Nitrogen Inlet
Low Pressure (vacuum)
High Pressure
Heaters
Blower Wheel
Product Coming Towards You!
Static Pressure
What is Static Pressure?
Static pressure is developed within the blower
plenum to produce true forced convection

Why is Static Pressure important?
Static pressure directly relates to the amount of
heat transfer an oven can deliver
Greater the static pressure, greater the heat
transferred to the product
Static pressure ensures uniform convection
from the plenum to the product

BTU Closed Loop Convection
•Highest level of process control
•Ensures repeatable heating and cooling, oven
to oven, line to line, site to site
•Transfer recipes line to line, plant to plant
•Heating and cooling convection remains
constant
•Independent of temperature, voltage and altitude variations
•Programmable range of 0.5-1.5 IWC
Closed Loop Convection Control
•Ideal for Lead Free applications
•Stay within lead free process window
•Controlled heating and cooling
convection rates
Furnace
Control Unit
0-10 VDC Out
Speed
Controller
Frequency
Adjust RPM
Pressure
Transducer
Thermal Effects of Convection Rate
Peak Temp
Convection Rate Measured in In/H2O
Low
High
Tantalum Cap
Large QFP
Chip Resistor
SOIC
TC Mean
TC SD
Delta T
0.5 IWC
209.1
199.2
209.9
209.7
207
5.2
10.7
40 HZ
0.8 IWC
212.1
203.5
213.6
212.6
210.5
4.7
10.1
50 HZ
1.2 IWC
213.6
206.7
215.2
214.8
212.6
4
8.4
60HZ
1.5 IWC
215.7
209
216.8
216.2
214.4
3.6
7.8
70HZ
Effects of Low Convection Rate Effects of Increasing Convection Rate
Lower Peak Temp
Greater Peak Temp
Larger Peak Delta T
Smaller Peak Delta T
Thermal Uniformity DeterioratesThermal Uniformity Improves
Air Cooling System
• 24 inch forced
impingement air cooling
• Lowest exit temperatures
• Best uniformity throughout the
profile
• Open / Closed Loop
Control
• Ensures repeatability
• Controlled cooling rates
• Clamshell design
– Easy access for maintenance
Water Cooling System
•Flexibility - 2 or 4 zone
configurations
•Programmable cooling
rates
•Closed loop control
•Easy Access
•Clamshell design
•Remote sliding heat exchangers
•Self contained on-board
water supply
Flux Management
Filters
Heat Exchangers
Heat Exchangers
Removable Drip Tray
Gas Inlet
Filters
Gas Outlet
Motor
Drain Plug
•Patented technology
•Multiple extraction
points
•Easy access to filters
and heat exchangers
•“On the fly”
maintenance
•Self cleaning cycle
Conveyor System
•Belt or rail
•2 – 18 inch width standard
•2 – 24” optional
•Brush-less drive motor
•Eliminates maintenance of
changing motor brushes
•Automatic chain lubrication
•Minimizes downtime associated
with chain lubrication
•Flat flex or fine mesh belt
Advanced Conveyor Solutions
•Precision Center Support
•Eliminates board warping
•3 and 4 rail dual lane
•Increased throughput
•Up to 10.5inch capability
•Dual speed
•Flexible manufacturing and
processing
•Chain pin lengths to 0.120”
•Minimizes underside product
clearance
Existing Design
Dual Lane Dual Speed System
Dual Lane Dual Speed Application
Company Confidential
Dual Lane Dual Speed Specifications
5mm/0.20"
Max
260.35mm/10.25"
Min
121.85mm/4.8"
Max
260.35mm/10.25"
PCB
Fixed rail
Movable rail
Frame
WINCON Software
• Wincon 4.0
•
•
•
•
WindowsTM / XP
Supports Multiple Languages
Barcode Reader Compatible
Extensive security and data
collection features
• Flexible time and recipe
scheduling
• Help section
• Intellimax
• Faster sampling rates
• Increased I/O with expansion
capability
• Software upgrades via
web/email
• Diagnostic capability
www.btu.com