Determination of the properties of deep-drawn sheets

Product catalog summary

Overview: This document provides information on special testing machines designed for evaluating the properties of deep-drawn sheets, specifically through strip tensile tests, friction tests, and draw-bead tests. These sheets are commonly used in automotive manufacturing for parts like engine hoods and doors.

Types of Tests:

Tensile Tests: Conducted on strips using jaws with pyramid toothing, which can be easily exchanged.
Friction Tests: Performed by replacing the draw-bead test clamping device with plain clamping jaws, focusing on high contact pressure and maximum pull-through speed to test surface coating durability.
Draw-Bead Tests: Used to control material flow during forming, ensuring optimal friction conditions with lubricants or coatings. The coefficient of friction is measured to select appropriate lubricants or coatings.

General Features:

Regulation of tensile load and test speed.
Recording of holding force.
Temperature regulation in grips and optional pre-temperature regulation below grips.

Testing Software: The LabMaster testing software allows for setting all relevant parameters, including temperature and clamping force regulation.

Machine Models:

Model 41-006-001: Hydraulic clamping, max test stroke of 400 mm, test speed from 1.5 mm/s to 150 mm/s, and specimen dimensions of 55 x 4 x 500 mm.
Model 41-006-003: Electromechanical clamping, max test stroke of 630 mm, test speed from 0.5 mm/s to 250 mm/s, and specimen dimensions of 60 x 5 x 920 mm.

Additional Features: High-precision thermocouples in clamping jaws for temperature monitoring, special ball-bearing stops to prevent deformation, and options for specimen pre-tempering.

Catalog excerpts

Determination of the properties of deep-drawn sheets-1

Application flyer Determination of the properties of deep drawn sheets Special testing machines for strip tensile tests, friction tests and draw-bead tests Hegewald & Peschke, Meß- und Prüftechnik GmbH Am Gründchen 1, 01683 Nossen, Germany Telephone: +49 35242 445-0 E-Mail: [email protected] http://www.Hegewald-Peschke.com

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Determination of the properties of deep-drawn sheets-2

Application: Possible types of tests:  Tensile tests on the strip  Friction tests  Tribological tests  Draw-bead tests These special testing machines can be used to determine the abrasion and friction properties of deep-drawn sheets. Such sheets are used, for example, for engine hoods, fenders, doors or pillars. Automobile manufacturers produce body parts like these by automated deep drawing. General features:  Regulation of the tensile load and test speed  Regulation and recording of the holding force  Control of specimen temperature regulation in the grips and optionally separate specimen...

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Determination of the properties of deep-drawn sheets-3

Models of the special testing machines for draw-bead tests and friction tests Item number 41-006-001 41-006-003 Clamping method Test stroke Test speed Clamping jaws yes, separately controllable via jacketed heating Single sided hydraulic grip (Clamping force: 80 kN) Motorized screw type wedge action grip (Clamping force: 32 kN) Draw-bead device with hydraulic servo control Draw-bead device with electric servo control Dimensions & Weight Machine Control container Specimen pretempering Clamping tools Video about tensile test on strips

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