Counterboredrawing

What is the magnetic permeability of materials? It refers to their ability to be attracted by a permanent magnet or to be influenced by a magnetic field. What are ‘magnetic’ steels? Which steels are classified …

Counterboredepth

Stainless steel in space missions – Today we are talking about space! And how stainless steel is making its way among the materials used to assemble spaceships for space exploration. But why the decision to …

Counterborehole dimensions

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Counterborehole callout

In the previous post, we saw what are the criteria for choosing between an AISI 304 stainless steel and an AISI 316 for aqueducts design. As promised, today we will find out which stainless steel …

So for a correct coupling between the screw and mechanical component it is appropriate that the flaring is 90. Obtainable easily with the appropriate countersink.

The difference of flaring from the spot having a largement of the tapered bore and not cylindrical. The recess is used to create receipts (or premises) of the screw heads. Why? In order to don’t make them protrude from the surfaces of machined parts once inserted. The “countersinking” can have variable inlet angles. (from 60 ° to 180 °) At 180 ° for the right fixation flat heads of different types. In addition the angle is determined by taking the opposite edges of the opening part.

Counterborescrew

One of our readers asked an interesting question. About a month and a half after installing a pool ladder made of stainless steel, the area where the welds are located and submerged in water developed …

Counterboresymbol in drawing

VAT n. IT 03155230406 - C.F. 02980000232 - R.I. 02980000232 - cap.soc. 26.000,00 i.v. - Socio Unico - R.E.A n. 277754

The “counterboring” is a mechanical process which consists in a cylindrical hole with a flat bottom which wides in turn another coaxial hole. This mechanical process is made by a “counterbore” a special tool. But when do you use a counterbore? Usually it is used when the head of a fixing element should not coming out from the surface of the piece you’re working on. In addition it is used to create on a boarder not perpendicular to the hole, a perpendicular seat for a cylinder head screw.

Specifically, the measures of the countersunk of three cutting edges (DIN 335) are indicated for the fixation of screws according to DIN 74-1.

Nitriding is a thermochemical surface hardening treatment consisting of a nitrogen enrichment on the surface of a mechanical steel component. But what is the purpose of this treatment? The creation of a hardened surface layer …

We continue our series of posts about corrosion. Today we will analyze in detail some key aspects about corrosion phenomena of stainless steel welded components. What kind of corrosion can be triggered? The choice of …