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FAQ

Quality control measures for steel coils include conducting visual inspections to check for surface defects, such as scratches, dents, or discoloration. Measurements are taken to ensure the proper dimensions and thickness of the steel coil. Mechanical properties, such as tensile strength and yield strength, are also tested to ensure they meet the required standards. Additionally, tests may be performed to check for coatings, such as zinc or paint, to ensure they are applied correctly and adhere properly to the steel surface.

Different methods exist for slitting steel coils, each with unique advantages and limitations. Several common methods include: 1. Rotary Shear Slitting: By employing rotating knives, this method cuts steel coils into narrower strips. It is versatile and efficient, enabling high-speed production and precise slitting. Rotary shear slitting is commonly utilized for thinner gauge materials. 2. Looping Pit Slitting: Steel coils pass through a looping pit in this method, where they are guided and tensioned before being slit. It is suitable for thicker gauge materials and ensures good edge quality. Looping pit slitting accommodates higher coil speeds and heavier coils. 3. Drag Slitting: In this method, the steel coil is dragged over a stationary blade or set of blades to perform the slitting. It is particularly beneficial for difficult-to-slit materials like high-strength steels. Drag slitting yields excellent edge quality and is often utilized for precision slitting applications. 4. Crush Slitting: Pressure is applied to the steel coil in crush slitting to crush and separate it into narrower strips. This cost-effective method is suitable for lower gauge materials but may result in slightly rougher edge quality compared to other methods. 5. Laser Slitting: Laser slitting employs a focused laser beam to cut through the steel coil. It is a highly precise method that offers excellent edge quality and minimal distortion. Laser slitting is commonly employed for high-value and specialty materials. Each method possesses distinct advantages and is suitable for specific applications and material types. The choice of slitting method depends on factors such as material thickness, desired edge quality, production speed requirements, and budget considerations.

Me and my cousin have been arguing about this. I said that superman is made out of steel, but he says that people just call him the man of steel because he's hard like steel. Does he have steel in his body?

Hes made of steel yes!!1

I want a good quality, big, strong, steel knife but I want it to be a good price, say around $30 or less, $60 at the most. please add links.

Sorry, probably aint gonna happen in that $ range. How big of a blade will effect the steel selection. For instance I have one I forged from 52100, a most excellent steel better suited for 5-6 blades. For larger blades either 5160 or L-6 can make an indestructable blade. For 5 and under D-2 is about as fine a steel as you can get. No blade made from these will come cheap, L-6 is only available from custom makers. Save up your money, expect to pay 100 - 200 for a well made blade. You pay cheap prices you get cheap workmanship.

I was wondering if steel cases can be loaded to the same pressure as brass cases. Are the cartridges that commonly feature steel cases like the Russian 5.45x39, 7.62x39 and 7.62x54R loaded to a lower pressure than their C.I.P. MAPs (380 MPa, 355 MPa, 390 MPa --gt; 51,488 psi to 56,564 psi)? There must be a reason why most NATO armies use brass cases...

Steel cases are harder to manufacture, but cheaper in material. Loaded? Yes. Those cases are a very mild steel, and will 'flow' well enough to seal at the pressures involved. The question might come up with low pressure loads though. RE-loaded?? - I wouldn't try it, even if they weren't berdan primed.

what is the chemical process that makes steel harder when it is heated and cooled rapidly?what does the heating of it do to the atoms?what does the cooling of it do to the atoms?what makes tempered steel so strong compared to untempered steel?

You can't temper all steels. Generally the material must be a high-carbon or tool steel. Different alloys temper differently, and tempering is usually done to get a specific set of characteristics, so you must know what you are working with and use the right methods and temperature. If you do it wrong, the material may be hard but too brittle for the purpose or have other issues. It can be simple, such as heating to a dull red, carbonizing the surface (use an acetylene rich flame until it blackens the surface) and oil quenching. Do that to a piece of tool steel (like a screwdriver) and it will case (surface) harden it to the point you can't scratch it with a file. Tempering changes the way the molecular structure in the metal is linked and oriented.

Two different shaving razors I'm looking to buy have different specs. in terms of the metals used for the blade; one being 1045 surgical stainless steel, the other 440 stainless (not sure if its A B or C, but probably 440A or 440B because it's not specified). So which one is better for the intended use as a shaving razor?

Type 440 combines such a high grade of cutlery steel, toughness and economy that it is actually known as razor blade steel. Browsing around (a lot) more, it seems that 1045 Surgical Steel is popular in straight razors used by barbers. These razors are honed by stropping with leather and last practically forever. From the above, I would guess that it might be easier to lose the edge on 1045, but also easier to re-sharpen it, that it won't easily knick because probably not so hard as 440. I'm not sure if it would be more expensive, unless it has a superior handle etc. So, I would expect to spend a little more effort over the lifetime of the 1045, maybe pay a little more for it, but have a longer lifetime. hth.

Will any modified choke or improved Cylinder choke be safe to use with steel shot? If these are safe, which is better for duck or goose hunting?

Lead shot can be fired through any choke. Steel shot requires a choke tube that is made for it.