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FAQ

Frequently asked questions of lead free reflow oven.
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How to choose the proper reflow oven for my application ?

Cause:

Here are two easy ways for reflow oven choose:

Method 1: According what P&P machine you are using and consider whether your products need N2. If for low speed P&P line, E4 and E6 will be best solution, small footprint. If for middle speed P&P line, M6 and M8 will be enough. If for high speed P&P line, consider to use SF-8,10,or 12. Then if need N2, you will need to choose N2 option.

Method 2: Estimated production of board. Remember a typical lead-free reflow oven profile is around 5 minutes, use the oven’s tunnel to divide 5 minutes, you will get the briefly conveyor speed. And check with this conveyor speed whether it can meet your production. For example board length 250mm, need to produce 120 pcs per hour. Estimated 50mm clearance between each board during conveyor, to finish 1 pc board in 0.5 minutes we will need to meet (250mm + 50mm)/0.5minutes speed, that’s 600mm/min . Typical reflow oven profile is about 5 minutes, so the minimum tunnel need to meet 5 x 600mm/min = 3000mm. So use this tunnel length to see which oven can meet, also consider the width of conveyor.

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When do we need center board support for PCB ?

Cause:

If your board is thin and deform during heating, to avoid it drop from chain conveyor, then you need center board support.

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When do we need dual rail conveyor lane option for conveyor ?

Cause:

When most of your board are narrow size and quite higher production. Dual rail conveyor will double the production in reflow process. Remember you will need to use shuttle conveyor before and after reflow oven. This will save energy consumption, image you use one machine to double reflow production. But it’s only for narrow boards.

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How to set up a good profile for my reflow oven ?

Cause:

1.Get the profile from your solder paste supplier. This is very important reference for us to set up the reflow oven.

2.Better to use the same PCB which is planning to go through reflow oven, to make the test with profiler www.1clicksmt.com/product/bluetooth-8-channels-reflow-profiler.html

3.Tune each zone’s temperature and conveyor speed to make profile meet required by solder paste. This is briefly explanation, for more details we can send engineer to do this and train your engineer.

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What’s the difference for 6 zones oven and 8 zones oven ?

Cause:

1.Most probably the heating tunnel length is different.

2.For profile’s point of view, for 6 zones oven means there are 6 points which an control the shape of profile, for 8 zones oven there are 8 points which can control the shape of profile. Obviously more points will be easier to get proper profile and more smooth profile.

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How to judge whether it’s a good reflow oven ?

Cause:

Very basically, it’s a thermal machine, so it need to meet below points as basic:

1.control temperature precision

2.Delta T under control, need to be uniform temperature to apply to front, middle, rear side of PCB surface.

3.Temperature stability. Not big temperature drop after PCB pass (especially thick board) If it can meet above 3 points, basically you can say it’s a not bad machine with good thermal character. If you are looking for a higher level, you may consider below:

1.Good cooling performance

2.Flux management make oven tunnel clean

3.N2 concentration and consumption

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What’s the advantageous of your curing oven ?

Cause:

We use IR panel, not IR tube.

1.It’s not fragile.

2.IR panel will provide more uniform temperature to whole board’s surface.

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What curing oven should I choose for my glue curing ?

Cause:

First to choose heating method, there are 3 different popular heating method, IR, UV, Hot air. Read the glue’s MSDS careful and it will always have a recommendation for curing method.

Second to choose tunnel length. Calculate production yield per hour with product’s size, choose the oven which can meet the tunnel length requirement. Or we can customize it.

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Can you make customized oven according our requirement ?

Cause:

Yes, we made many customized oven. According different temperature requirement, different products’ size and weight, we design different length, heating method, conveyor type oven.

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What’s controlling system for these machines ?

Cause:

For SF and HF machine, it’s PC control as standard.

For M series, E series machine, it’s touchscreen control as standard.

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Where has this machine been installed ?

Cause:

USA, Germany, Hungary, Finland, Spain, Russia, Brazil, India, Thailand, Malaysia,Vietnam, Philippine etc.

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Can you show machine to us at our region ?

Cause:

Contact with us for more detail and we will check who use this machine close you, then we can date with customer.

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How many machines has been installed ?

Cause:

More than 500sets world-widely by 1CLICKSMT till end of 2018.

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What kind of warranty for these machines ?

Cause:

Generally, all machine is for one year warranty.

For M series oven, E series oven, we provide lifetime warranty for heater.

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How machine was packed during shipping ?

Cause:

Vacuum package with crate.

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Power supply of machine ?

Cause:

3phase 380v as standard, option for 3phase 220v, 3phase 440v etc.

Certification.

CE certificated.

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