GB/T 15825.6-2008Sheet metal formability and test methods - Part 6: Conical cup test (English PDF)

1 Scope

GB/T 15825 provisions of this part of the sheet metal cone cup to a composite value index formability test method "Drawing + bulging."

This section applies to a thickness of 0.50mm ~ 1.60mm of sheet metal, the relevant parties, may be appropriate to expand the applicable thickness range.

2 Normative references

The following documents contain provisions which, through reference GB/T 15825 in this section constitute provisions of this section. For dated reference documents

Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section

Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 308 Rolling Ball (GB/T 308-2002, ISO 3290.1998, Rolingbearings-Bal-Dimen- sionsandtolerances, NEQ)

GB/T 15825.2-2008 sheet metal formability and test methods - Part 2. General test procedures

3 symbols, names and units

Symbols, names and units used in this section are shown in Table 1.

Table 1 symbol, name and unit

Symbol Name Unit

Dmax cone cups the bottom of the side walls rupture, the mouth portion of the maximum outer diameter mm

Dmin cone cup at the bottom of the side walls rupture, the mouth portion of the minimum outer diameter mm

CCV value mm cone cup

eta cone cup relative value

Fp punch force N

Dp ball diameter mm

D0 specimen diameter mm

Dd die hole diameter mm straight end

gamma die hole cone angle (°)

D cone cup diameter mm

Qin Dmax cone cup Average maximum outer diameter mm […]