Plate N Sheet 4.10.02 Keygenl

I bought Smooth PEI sheet two months ago and it cracked both side while print ABS. I know it is two months old. Did that happen to you? Should I complete remove surface both side (If I could remove) and put PEI sticker on? Please give me advice.

I've got 2 of the PEI sticker sheets and haven't had any issues like that. I did manage to peel up and damage one side using high-temp PETG that stuck too well. That bed looks like it's been worked over with a metal tool. Have you waited for the sheet to cool completely before removal?

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You could contact support via online chat to see if they'll help you out. If not, I think you'll find that by the time you order replacement PEI and do all the work to remove the PEI, ordering a replacement sheet with the PEI pre-applied is worth it.

For next time, have a search around here on dish soap for cleaning the bed, it works far better than isopropanol at removing accidental fingerprints. I washed my sheet a few days ago and have done a number of prints since then. If you are careful not to touch the bed, you can go quite a while between prints without cleaning the bed... and it's a lot less stinky than IPA or acetone, which are only needed in cases of severe contamination by something the dish soap won't remove.

Been printing since October on both the smooth sheet and the Powder coated sheet and I have yet to open the can of acetone I bought and the 99% ISO alcohol I have used perhaps 2 OZ total in that time....

I wash them with warm water and dawn dish soap (in the UK use Fairy liquid) by using a wad of clean kitchen paper towel, dampen it with warm water and put a dollop of Dawn on the pad and scrub (i do it twice at 90 deg to each other holding the plate by the edge as if it is a phonograph record, rinse under running water and dry with clean paper towel keep touching only by the edge... I do this every other day of printing with both kinds of plate. as I found the instruction to wipe with ISO alcohol to not be effective for me as it perhaps lengthened the time between washings from 3 full days of printing to 4. I decided then to just wash the plates properly every 2 or 3 days and that seems to work for the filaments I use (mostly PETG with some PLA and a bit of ABS (and a small amount of NinjaFlex that is relegated to one side of the smooth plate that gets rubbed on my nose and forehead (if i can't find the talcum powder)). I have plans to make a plate with a Garolite surface for Nylon printing but I have yet to have a need for nylon parts.

Hi Karen, You can reheat fried eggs in the microwave or in the oven. To reheat them in the microwave, place on a plate and cover it, then cook it in 15 second intervals (carefully flipping it before continuing to cook it) until it reaches your desired temperature (it needs a minimum internal temperature of 165 F, but they can quickly get much hotter than that in the microwave). To reheat it in the oven, grease a baking sheet, place the egg on it, and cover it with aluminum foil. Bake it at 300 F for about 20 minutes or at 350 F for about 10 minutes (be sure to check it halfway through the cooking time and cook it to an internal temperature of 165 F). Hope that helps! -Alexa

Answer: The hardness of steel can significantly impact its ability to bend without breaking. Steel with a high hardness rating, such as hardened or tempered material, will be more brittle and less ductile than softer steel, making it more difficult to bend without cracking or breaking. And yes, any time you laser- or plasma-cut sheet metal or plate, the material hardens in the heat-affected zone (HAZ) at the point of the cut (see Figure 2). Depending on the thickness and type of metal, that zone can spread deep into the material (see Figure 3).

The thickness of the sheet also can play a role in its ability to bend. Thicker steel will require more force to bend, increasing the likelihood of the material cracking or breaking, especially if it is already hardened or tempered.

Small cracks within metallic welds can damage the integrity of the sheet and cause greater damage. A variety of factors can affect the sensitivity of an ECT probe, such as probe design, material, and surface finish. Using ECT equipment with simple, straightforward calibration features allows analysts to commence inspections without lengthy setup times or adjustments.

In addition, the shape of the probe itself should match the design of the sheet weld. For this reason, surface array ECT tends to be among the most effective techniques for capturing additional defects.

In terms of metallic welds, ECA is ideal for detecting surface-breaking cracks that can compromise the integrity of the sheet itself. Instruments with a high signal-to-noise ratio (SNR) are key to ensuring a truly comprehensive inspection, as they minimize the amount of noise that can obscure flaw detection. In short, an enhanced SNR increases the probability of detection.

Surface array technology is capable of detecting even the slightest loss of material or indentations within a welding sheet. ECA efficacy also extends to other unconventional shapes that are harder to test.

If talking about circumferential cracking, for example, it can be hard to detect if using the wrong probe type. Bobbin probes, in particular, are highly sensitive to ferromagnetic signals that stem from tube sheets or support plates from heat exchangers. These signals can block signals pointing to cracking indications, making it hard to distinguish between small-volume cracking and complex signals deriving from geometry shifts. Furthermore, the coils from a bobbin probe cannot read circumferential cracking since eddy currents from the probe run parallel to the cracking.

Zetec is an experienced NDT provider that is proud to offer the latest in eddy current testing solutions. Our ECT and ECA equipment feature enhanced flaw detection in metal sheets and tubing and incomparable inspection efficiency. Contact us today for more information.

Especially in the automotive sector, high-strength sheet materials are processed in the manufacturing industry. These steels often show a pronounced sensitivity to edge cracks. Because of this, many edge crack testing methods for a wide variety of stress conditions have been developed to describe the edge crack sensitivity of a material. Only the hole expansion test according to ISO 16630 has been standardized. However, the standardization has some gaps in the process description, which has resulted in test modifications. Another disadvantage is the dependence of the results on the machine operator. In the past, the influence of the shear cutting parameters die clearance, cutting edge geometry, and type of cutting line on the edge crack sensitivity was only calculated for undeformed sheet materials. Not only are shear cutting operations carried out on undeformed sheet blanks in the context of the manufacturing of sheet metal components, but more and more pre-formed sheets are mechanically separated and subsequently further formed. Therefore, it is essential to consider the influence of the type and amount of pre-forming introduced on the sensitivity of a material to edge cracks. The discrete types of pre-forming, uniaxial tension, plane strain, and equi-biaxial stretch forming were introduced to sheet metal blanks using dual-phase steel. The Edge-Fracture-Tensile-Test was used to identify the residual formability of the undeformed and pre-formed specimens. The Edge-Crack-Sensitivity-Factor \({K}_{\mathrm{ec}}\), which can be used to predict edge cracks in a finite element forming simulation, was determined from the recorded major strains for selected parameter configurations.

The effect of numerous shear cutting process parameters on the residual formability of metallic materials has already been discussed in many publications. The influence of the die clearance on the edge crack sensitivity was studied by [12] and [13]. [14] and [15] investigated the geometries impact, of the cutting edge, on the residual forming capacity. [16] and [17] examined the influence of shear rake angle. Since the material separation during component production does not only occur on the undeformed base material, the influence of the shear cutting process on the edge cracks sensitivity when using pre-formed sheets that are subsequently further formed needs to be discussed. The process analysis is especially relevant for dual-phase steels.

The sheet material used is a hot-dip galvanized dual-phase steel CR440Y780T-DP [23] with a sheet thickness of 1.2 mm. Dual-phase steels have a microstructure of ferritic matrix with included martensitic or bainitic phases. The cold-rolled material is often used for complex structural parts such as longitudinal and transverse beams due to its excellent deep-drawing properties. In addition, dual-phase steels have excellent hardening properties.

The initial structure of the steel is visualized in Fig. 3. The etching was done with Nital. Sampling and preparation were carried out following DIN 50,602 [24] and the steel-iron test sheet SEP 1520 [3].

Attention was paid to ensure that the EFTT specimen are taken from a homogeneously pre-formed area. For this purpose, a point pattern (point diameter 1 mm, point spacing 2 mm) was applied to the blank before the pre-forming. The point pattern was printed on foil and transferred to the sheet metal to ensure that the sheet surface was not affected through etching. After the pre-forming process, the major and minor strains were determined by comparing the deformed pattern with the initial pattern using an optical forming analysis system GOM Argus (see Fig. 6).

In addition to the change of the major and minor strain, the sheet metal pre-forming also results in a reduction in sheet thickness. Since the shear cutting of the EFTT specimens for both the undeformed and the pre-formed specimens is carried out with the same set of active elements with an absolute die clearance of 0.128 mm, this decrease in sheet thickness also results in a change of the relative die clearance \(u\). Table 4 gives an overview of the sheet thickness and the associated relative die clearance depending on the pre-forming applied. be457b7860