If a FSW heat sink larger than the maximum size or using a different fin pattern is required, please contact our sales.
Friction Stir Welding is a method of joining materials by heating the surrounding material to a high temperature through friction with a rotating tool. This causes the material to soften and flow, joining the materials. Compared to other joining methods, it has the advantage of high energy efficiency and a stable joint quality.
At right is a photo of a cross-section, cut perpendicular to the weld line/joint. There are no visible voids or cavities.
FSW heat sinks will have a conical hole remaining along the edge (right photo). This feature is a FSW process requirement and should not be significant thermally or mechanically.
The following are results of a performance test, comparing a standard 100x100x30mm heat sink (UB100-30B) with a heat sink created by joining two smaller units by FSW to the same size. Thermal performance is virtually identical.
Sample name | m/sec | 0.5 | 0.8 | 1 | 1.2 | 1.5 | 2 | 2.5 | 3 | 4 | |
---|---|---|---|---|---|---|---|---|---|---|---|
UB100-30B | (℃/W) | 0.586 | 0.430 | 0.373 | 0.340 | 0.306 | 0.275 | 0.257 | 0.245 | 0.227 | |
UB100-30 FSW JOINT | 0.588 | 0.431 | 0.375 | 0.342 | 0.308 | 0.276 | 0.258 | 0.246 | 0.228 |
Quantity | 1 | 3 | 5 | 10 | 30 | 50 | 100 |
---|---|---|---|---|---|---|---|
2x Joint | US$215.14 | US$94.46 | US$69.36 | US$47.91 | US$33.60 | US$30.74 | US$28.60 |
4x Joint | US$238.76 | US$119.97 | US$95.81 | US$74.36 | US$60.66 | US$57.20 | US$55.05 |
Quantity | 1 | 3 | 5 | 10 | 30 | 50 | 100 |
---|---|---|---|---|---|---|---|
2x Joint | US$249.75 | US$106.40 | US$76.46 | US$54.04 | US$39.07 | US$36.09 | US$30.52 |
4x Joint | US$280.83 | US$137.47 | US$107.53 | US$85.11 | US$70.14 | US$67.16 | US$58.49 |
W ≤ 100 | 100 < W < Wmax | |
---|---|---|
L ≤ 100 | ||
100 < L ≤ Lmax |
For details, please check each FSW heat sink series page.
FSW Series Name | Base Heat Sink | Lmax | Wmax | H |
---|---|---|---|---|
JLP2B | LPD100 | 179.4 | 191.9 | 12 - 40 |
JLP4R | LPD70130 | 240.6 | 132.3 | 12 - 40 |
JLPB6 | LPD13070 | 119.8 | 253.3 | 12 - 40 |
JMD1N | MD100 | 179.4 | 193.0 | 12 - 40 |
JUL0A | ULP100 | 179.2 | 193.8 | 12 - 25 |
JL-02 | L100 | 177.3 | 192.6 | 12 - 40 |
JLT0P | LT70130 | 235.2 | 133.7 | 12 - 40 |
JLT0H | LT13070 | 116.5 | 255.0 | 12 - 40 |
JUB1P | UB100 | 177.3 | 195.2 | 12 - 25 |
JUB2Z | UB13070 | 116.3 | 256.6 | 12 - 25 |
JN-02 | N100 | 188.8 | 188.8 | 12 - 40 |
JN-14 | N13070 | 129.3 | 249.4 | 12 - 40 |
JS-18 | S20100 | 187.3 | 191.2 | 12 - 40 |
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