NVH percep/on “The noise, vibra/on and harshness (NVH) reduc/on bring to the customer not only the percep/on of quality but durability, solidity and higher general sa/sfac/on” Source: J.D. Powers 2006 New Car Buyer Survey
NVH applica/on Resonance occurs within the car sec/ons: pillars, cowl bars, wheel wells & side panels. Many automo/ve manufacturers use acous/cal foam to minimize noise coming from /res, wind, exhaust and engine.
NVH foam cavity ﬁlling Baﬄes Injected foam Two-‐component polyurethane foams. Close cell formula/on 1 to 5 pcf density range. Designed to block noise, water & wind, forming a high performance acous/cal seal and preven/ng the noise from resona/ng.
Acous/c baﬄes Speciﬁc tooling for each part Low-‐up front capital Unreliable expansion Simple approach Sealing performance Licle in-‐plant space constraints Speciﬁc baﬄe per vehicle, many part numbers, high inventory & slow /me to market
Acous/c baﬄes Baﬄes are costly to design, manufacture & install and oeen result in a less than op/mal solu/on
Injected foam 3D, robust seal and improved NVH Flexible: used on mul/ple High up-‐front capital vehicle lines and carry costs over to future lines Poten/al facili/es space Low material cost and constraints reduced or eliminated tooling costs Cost of ownership Can adjust foam volume and shot loca/ons as required
NVH equipment challenges High up-‐front capital costs Custom-‐designed polyurethane processing equipment for NVH foam is expensive Poten1al facili1es space constraints These sizeable polyurethane processing machines take up a large amount of space Cost of ownership Custom repair parts are expensive. Specialized technicians usually travel to conduct on-‐site maintenance and repairs
NVH Solu/ons – Betacell Specialized custom design Long lead /mes, specialized service parts Costly repairs Complicated for plant personnel Longer trouble shoo/ng for repairs More down /me Controls are customized by cell, longer training Specialized maintenance Diﬃcult to service in ﬁeld Foot print must be considered Variable ra/o: rotary/linear pumps Automa/cally adjusts for wear Risk of dispensing out of ra/o tolerance Diﬀerent pump types – more repair parts
HFR The Graco HFR metering system is a standard modular design with precision dispensing capabili/es. Advanced & reliable: High quality meter, mix and dispense system that oﬀers more technology and func/onality. Aﬀordable: a low ini/al investment allows you to use acous/cal foam applica/ons where it may not have been possible before. Lower price than tradi/onal custom systems. Global distribu1on
Installa/on size BetaCell Machine: 141”W x 40”D x 103”H Control Panel: 95”W x 20”D x 56”H HFR Machine: 48"W x 34"D x 59"H Tanks Stands 26"W x 35"D x 70"H Mix-‐head Power Pack 26"W x 20"D x 57“H
Reducing maintenance costs ROTARY TECHNOLOGY PISTON TECHNOLOGY Rotary rebuilds are expensive HFR oﬀers Z series pumps and require circula/ng mix Rebuild at the facility heads to mantain pressure. Elimina/on rebuilds 8.000 – 12.000 € investment. No need of back-‐up pumps Annual rebuild: 2.500 € Addi/onal mix head to maintain produc/on while mix head is rebuilt: 8.000 €
Durability, accuracy, reliability • Standardized and Modular System – Closed loop metering system – +/-‐ 1% accuracy – 1:1 – 24:1 ra/o – Up to 50 lb/min @ 3000psi • Graco Control Architecture – Standard USB Logs – Op/onal Gateway • Discrete I/O • Ethernet IP • DeviceNet • Proﬁbus • ProﬁNet
Conclusions Customer percep/on: SILENCE = QUALITY NVH solu/ons are a trend in automo/ve industry New HFR: easy to use & mantain, aﬀordable, smaller, ﬂexible and accurate. Becer ROI (injec/on vs baﬄes)