Struers Abramin Manuel utilisateur

Manual No.: 13947001

Date of Release 0..20

Abramin

Instruction Manual

Abramin

Instruction Manual

Always state Serial No and Voltage/frequency if you have technical questions or when ordering spare parts.

You will find the Serial No. and Voltage on the type plate of the machine itself. We may also need the Date

and Article No of the manual. This information is found on the front cover.

The following restrictions should be observed, as violation of the restrictions may cause cancellation of

Struers legal obligations:

Instruction Manuals: Struers Instruction Manual may only be used in connection with Struers equipment

covered by the Instruction Manual.

Service Manuals: Struers Service Manual may only be used by a trained technician authorised by Struers.

The Service Manual may only be used in connection with Struers equipment covered by the Service Manual.

Struers assumes no responsibility for errors in the manual text/illustrations. The information in this manual is

subject to changes without notice. The manual may mention accessories or parts not included in the present

version of the equipment.

The contents of this manual is the property of Struers. Reproduction of any part of this manual without the

written permission of Struers is not allowed.

Struers A/S

Pederstrupvej 84

DK-2750 Ballerup

Denmark

Telephone +45 44 600 800

Fax +45 44 600 801

Abramin

Instruction Manual

Abramin

Safety Precaution Sheet

To be read carefully

before use

1. The operator should be fully aware of the use of the machine according to

the Instruction Manual. The machine must be placed in an adequate

working position.

2. Be sure that the actual voltage corresponds to the voltage stated on the

back of the machine. The machine must be earthed.

3. Be sure that the water connections do not leak.

4. Keep clear of the rotational disc when operating. Be careful that you do not

hurt your fingers/knuckles (the cooling water will prevent you feeling any

pain while the injury is done!). Do not drop the sample while grinding.

5. Struers recommend that the mains water supply is shut off or disconnected

if the machine is to be left unattended.

6. If you observe malfunctions or hear unusual noises - stop the apparatus

and call technical service.

The equipment should only be used for its intended purpose and as detailed in the Instruction Manual.

The equipment is designed for use with consumables supplied by Struers. If subjected to misuse, improper

installation, alteration, neglect, accident or improper repair, Struers will accept no responsibility for

damage(s) to the user or the equipment.

Dismantling of any part of the equipment, during service or repair, should always be performed by a qualified

technician (electromechanical, electronic, mechanical, pneumatic, etc.).

Abramin

Instruction Manual

Disposal

Equipment marked with a WEEE symbol contain electrical and

electronic components and must not be disposed of as general

waste.

Please contact your local authorities for information on the correct

method of disposal in accordance with national legislation.

Abramin

Instruction Manual

1

User’s Guide

Table of Contents Page

1. Description ............................................................................... 3

2. Technical Data ........................................................................ 4

3. Accessories and Connected Equipment

Accessories ........................................................................................ 5

Grinding with Grinding Paper .................................................... 5

Polishing on Al-Discs ................................................................ 5

4. Preparation of Specimens

Preparation Methods .......................................................................... 7

PG Plane Grinding .................................................................... 7

FG Fine Grinding ...................................................................... 7

DP Diamond Polishing .............................................................. 7

OP Oxide Polishing ................................................................... 7

Struers Metalog GuideTM .................................................................... 8

5. Installation

Contents of Packing Box .................................................................... 9

Unpacking/ Removal of Transport Fittings ......................................... 9

Connection to Compressed-air .......................................................... 9

Connection to Mains ........................................................................ 10

Connection of Water ........................................................................ 10

Lubricator ......................................................................................... 10

6. Operation

Controls ............................................................................................ 11

Front Panel and Controls of Abramin ............................................... 12

Mounting the Grinding and Polishing Disc ....................................... 14

Inserting the Specimen Holder ......................................................... 14

Programming .................................................................................... 14

Preparation and Tips ........................................................................ 17

Manual Preparation .......................................................................... 18

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Instruction Manual

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7. Cleaning .................................................................................. 19

8. Service and Repair

Technical Information ....................................................................... 20

Mechanical Construction ......................................................... 20

Pneumatic System .................................................................. 21

Electric System ....................................................................... 22

Trouble Shooting .............................................................................. 23

Fault in the Power Circuit ........................................................ 23

Faults in the Operating Circuit ................................................ 23

Faults in the µP -circuit or Display .......................................... 24

Index for Components ............................................................. 25

Maintenance ..................................................................................... 26

Adjustment ....................................................................................... 27

Adjustment of Down-speed ..................................................... 27

Adjustment of Up-speed ......................................................... 27

Adjustment of Slide Friction .................................................... 27

Removal of the Quick-release Coupling ........................................... 27

Abramin

Instruction Manual

3

1. Description

Abramin is a microprocessor controlled machine for the grinding and

polishing of specimens fixed in a specimen holder disc. Grinding and

polishing are carried out on a horizontal rotating disc and the rotating

specimen holder with the specimen is pressed eccentrically against

it.

Amount of pressure, lubricant or cooling water can be manually

adjusted whereas the microprocessor controls time, disc speed and

choice between water and lubricant.

Abramin has 8 program steps into which the above-mentioned data

can be individually programmed. The disc and cooling water or

lubricant can also be started manually.

With normal use there is, therefore, only the need to select the

respective program step, adjust the pressure and start the process

with the two push-buttons marked "Start".

Abramin

Instruction Manual

4

2. Technical Data

Subject Specifications

Electrical Data Voltage/

frequency Max. Power

Consumption Cable

Specification Fuse size

Min. Max.

3 X 200V 50HZ 3.9 A 3x1,5mm² + PE 6 16

3 x 200V 60Hz 3.9 A 3xAWG12 + PE 6 15

3 X 220V 50HZ 3.8 A 3x1,5mm² + PE 6 16

3 X 220V 60HZ 3.8 A 3xAWG12 + PE 6 15

3 X 380V 50HZ 2.1 A 3x1,5mm² + PE 6 16

3 X 415V 50HZ 1.9 A 3x1,5mm² + PE 6 16

3 X 440V 60HZ 2.1 A 3xAWG12 + PE 6 15

3 x 480V 60Hz 2.1 A 3xAWG12 + PE 6 15

Residual Current Circuit Breaker type A, 30 mA (or higher) is recommended.

Compressed air supply 6 bar (6 kp/cm2)

Compressed air consumption Approx. 15 l/min.

Effect transferred to the disc 300 W at 150 rpm

550 W at 300 rpm

Effect, specimen holder motor 50 W

Speed of rotation, turntable 150/300 rpm

Speed of rotation, specimen

holder motor 150 rpm, 50 Hz

180 rpm, 60 Hz

Vertical specimen holder

pressure: 30-450 N

Polishing disc diameter Max. 320 mm

Max. height of specimen outside

the specimen holder disc 10 mm

Dimensions Height: 650 mm

Width: 530 mm

Depth: 780 mm

Weight 99 kg (gross 121 kg)

Safety Standard Please refer to the Declaration of Conformity

Noise level Approx. 56 dB at a distance of 1 m from the machine

Abramin

Instruction Manual

5

3. Accessories and Connected Equipment

All of the preparation steps necessary for the preparation of

specimens can be carried out on Abramin, e.g. plane grinding,

ordinary grinding, diamond disc grinding, polishing with diverse

polishing cloths and finally, fine polishing with OP-S. Plane grinding

can either be carried out with grinding paper or on the grindstone. In

order to be able to use the grindstone on Abramin, however, it is

necessary to mount a diamond truing device unit. If large specimens

or many specimens are to be prepared, it will be more advantageous

to carry out plane grinding on AbraPlan-20 as thereby much time and

many pieces of grinding paper can be saved. Abramin can be used

with specimen holder disc 160 mm dia. (see the Specimen Holders

User's Guide) and in order to get full benefit from the consumables it

is recommended that the various accessory discs are chosen in

accordance herewith.

Specimen holder 160 mm dia. can be combined with the following

preparation discs (Cat. No. in brackets):

Ø 305 mm disc (02426909) for non-adhesive grinding paper in

accordance with the Knuth-Rotor principle or Ø 230 mm disc

(02426908) for quick-adhesion of grinding paper with Double-

adhesive discs.

Ø 250 mm (02426907) or Ø 300 mm (02426906)

− Microstop for Abramin (03946901).

− Multidoser for 6 bottles. Automatic dosing, supplying constant

amounts of suspension and lubricant.

− Levelling apparatus Uniforce (04886102 / 04886101) which has

its own levelling disc (please ask for separate leaflet).

− Diamond truing device unit (04146903) for truing the grinding

wheel (40800007) for plane grinding.

− Metason 200-HT ultrasonic bath for cleaning the specimen

holder with specimens between the various steps.

− Drybox-2 drying apparatus for drying the specimen holder with

specimens.

Accessories

Grinding with Grinding Paper

Polishing on Al-Discs

Abramin

Instruction Manual

6

Specification

Code

Accessories

Wet Grinding Discs with Ring

250 mm dia., aluminium 02426915

305 mm dia., aluminium 02426909

Polishing Discs

250 mm dia., aluminium 02426907

300 mm dia., aluminium 02426906

Discs for Magnetic Fixation

MD-Disc, 250 mm dia. 02426919

MD-Disc, 300 mm dia. 02426918

Connected Equipment

Multidoser (6 Bottles)

for automatic dosing of 6 liquids (1-5 suspensions, 0-4

lubricants and 1 OP-Suspension)

04606204

Multidoser Connection kit for Abramin 04606907

Spare Parts

Swivel 2NF10130

Abramin

Instruction Manual

7

4. Preparation of Specimens

Plane Grinding (PG) may be carried out on PG-paper, SiC paper or,

for hard materials, on Diamond Pad.

SiC paper is used on a wet grinding disc, according to the Knuth-

Rotor principle. PG-paper or Diamond Pad is glued to a

grinding/polishing disc.

Fine Grinding (FG) is carried out on a cloth with low resilience such

as DP-Plan, DP-Pan or DP-Dur, or on Petrodisc-M. SiC-Paper may

also be used.

Diamond Polishing (DP) is carried out on a polishing cloth using

diamond abrasive and a lubricant. The correct choice of cloth

depends on the material.

Oxide Polishing (OP) is especially suited for soft and ductile material

as a final polishing step.

Preparation Methods

PG Plane Grinding

FG Fine Grinding

DP Diamond Polishing

OP Oxide Polishing

Abramin

Instruction Manual

8

Abramin is designed for both grinding and polishing. In Struers

Metalog GuideTM you will find a detailed description of

grinding/polishing for automated mechanical specimen preparation.

Struers Metalog GuideTM offers preparation methods for the most

common materials, based on a simple analysis of two key properties:

hardness and ductility. Finding the right method is easy, including

choice of consumables. Always consult Struers Metalog GuideTM for

the correct preparation method for the actual specimens.

Struers Metalog Guide TM contains 6 useful chapters:

Metalogram: a quick and safe guide to the right preparation method.

Metalog Methods: a complete catalogue of preparation methods,

based on Struers' vast store of materialographic experience, and

employing Struers' range of consumables.

Preparation Philosophy: the basics of modern specimen preparation,

seen from a professional point of view.

Metalog Process: the materialographic preparation process from

start to finish, logically explained.

Metalog Master: a combined trouble-shooting guide and supply of in-

depth information on the processes of mechanical preparation,

including an expert system for the solving of preparation problems.

Consumables specification

: quick access to the relevant

consumables for the chosen preparation methods.

Struers Metalog GuideTM

Struers Metalog Guide

A complete guide to materialographic specimen preparation.

Contact your local dealer for a free copy of Metalog Guide.

Abramin

Instruction Manual

9

5. Installation

1 Abramin

1 Set of Instruction Manuals

100 Process cards

1 Protection ring of PVC

1 Lid for protection ring of PVC

1 Lubricant bottles, 250 ml

1 Lubricant stopper

1 Outlet tube 1" x 1.5 m

1 Elbow pipe for outlet (PVC)

3 Hose clips, 30 mm

1 Reinforced tube for compressed air, ¼" x 3 m

1 Hose connection for compressed air

2 Hose clips, 12 mm

1 Hose connection

1 Union for hose connection

1 Gasket for hose connection

1 Hose clip, 13 mm

1 Allen key, 6 mm

1 Allen key, 2.5 mm

1 Grease gun for spindle

Abramin is secured by 4 bolts to a base frame in the packing case.

Abramin can be taken off the base frame, using the pipe wrench (13

mm), after which it can be placed where it will be used.

Connect the reinforced compressed-air tube to the branch at the

back of the apparatus (see fig. 3. in the Spare Parts manual), use

hose clamp (12 mm). Abramin is equipped with a water separator

with filter and, therefore, no extra air purification is necessary.

Feed supply pressure should be 6 bar and can be supplied either

from the central compressor, portable compressor with compressed

air reservoir or compressed-air bottle. A capacity of 15 l/min at

atmospheric pressure is sufficient.

Contents of Packing Box

Unpacking/ Removal

of Transport Fittings

Note:

The Figures referred to in this manual can be found

in the Spare Parts and Diagrams section.

Connection to Compressed-air

Abramin

Instruction Manual

10

Check that the serial plate which is placed above the wire (fig. 3.),

is marked with the correct voltage and frequency.

Connect the wires (fig. 3.) as follows:

Yellow/green: earth

Black: phase

Brown: phase

Check that the turntable rotates counter-clockwise when "Disc" is

activated. If it rotates clockwise, reverse the direction by changing

over two phases. The voltage must not deviate more than 10% from

that indicated on the serial plate, otherwise damage can be caused

to the electronics or the power can be reduced.

Connect the thin reinforced hose (fig. 3.) to the tap and use a

13 mm hose clip to secure it. The supplied hose connection with

union and gasket can also be mounted on the tap (½" pipe thread BS

2779:G ½).

Connect the outlet hose to the union on Abramin. The hose is led to

the outlet in a gradual slope. This prevents the water from

discharging too slowly as this may cause overflow or blocking of the

outlet. The elbow pipe must be suitably placed in order to prevent

elbows on the hose.

For the outlet hose use hose clip (30 mm). It must not be tightened

too much (plastic tubing).

If the built-in lubricator is to be used, the apparatus is ready for use

when the 250 ml bottle is full of lubricant, the special stopper is set in

and the bottle in position as shown on fig. 1 in the Spare Parts

manual.

If Multidoser is to be used, connect it to the multiple socket on the

right side of the apparatus.

Connection to Mains

Connection of Water

Lubricator

Abramin

Instruction Manual

11

6. Operation

Please refer to the Spare Parts manual for figures.

The main switch is located on the left side of the apparatus (fig.3.).

The switch is only used in connection with servicing and can be

locked when switched off during maintenance operations. The Stand-

by/On switch  on the front panel is used during normal operating

procedure.

The program step starts by pressing the two buttons simultaneously

until the specimen holder begins to rotate. If the display shows 00.00

the sample holder is lowered without the motors being started. By

activating the key Stop  the sample holder returns to its initial

position. This is used in connection with Microstop (accessory).

Interrupts all functions.

The specimen holder remains in lower position until the emergency

button is released by pulling the button. When the emergency stop is

activated the display shows intermittently E.S. or O.L., signifying

Emergency Stop or Overload. (If the Emergency Stop has not been

activated and the display nevertheless shows E.S or O.L., one of the

two motors in the apparatus is overloaded - see chapter 8, Service

and Repair).

Used to adjust the water flow.

The turning on/off of the water is effected by a built-in magnetic valve

which is controlled by the microprocessor.

For adjusting the flow of lubricant.

Opening and closing of the lubricant valve is controlled by the

microprocessor.

For connection of automatic dosing with Multidoser.

For quick connection and disconnection to the specimen holder.

Controls

Main Switch

Fig. 1.



Start Buttons



Emergency Stop



Water Valve

Needle Valve for Lubricant

Socket for Multidoser



Quick-coupling

Abramin

Instruction Manual

12

Front Panel and Controls of

Abramin

Instruction Manual

13

The machine cannot operate in Stand-by and all buttons are

blocked. Stand-by is indicated by a dot on the display.

8 keys for choice of preparation step. The 8 program steps can be

programmed individually in regard to time, disc speed and

water/lubricant.

Shows the set time in the relative step in minutes and seconds. It is

also used to indicate various warnings.

When a program step has been selected the time can be entered

with the two pointer keys to the left   and  . The two middle

keys are for the selection of either 150 or 300 rpm for the polishing

disc. The two keys Water  and Doser  are used for admission of

either water or lubricant (lubricant and diamond suspension if

Multidoser is connected).

The Stop key  interrupts the program step and the manual

functions. The Disc key in the middle (150 rpm/300 rpm) starts the

grinding or polishing disc and the Water key  opens the flow of

water. By re-pressing Water or Disc, or by pressing Stop, the

function is interrupted. If Doser has been selected in the program

step the water will be cut off.

Holder for fixing the process card, a key plan stating which program

step should be used, which grinding/polishing backing should be put

on the turntable and which pressure should be set (see examples of

programming at the back of this manual).

For reading the grinding and polishing pressure.

Adjusting knob for the setting of grinding or polishing pressure.

By using the handwheel (fig. 3.) the specimen holder can be

moved radially in relation to the centre of the polishing disc so that

the grinding paper and polishing cloths can be used to their full

extent.



Stand-by/On Switch





Program Step



Display



Data



Manual Keys



Process Card Holder



Pressure Gauge



Force (F)



Eccentricity Markings

Abramin

Instruction Manual

14

Place the grinding and polishing disc on the turntable by inserting the

three legs in the matching holes of the turntable. In order to prevent

the polishing disc from wobbling the contact face of the polishing disc

and the turntable should be clean.

Secure the specimen holder with the pre-levelled specimens (see

chapter 3.) in the quick-coupling (fig. 1.) in such a way that the stud

on the specimen holder engages in the quick-coupling and while the

specimen holder is being pressed up, press the quick-coupling's

plastic flange down with the thumbs. In this way, the specimen holder

moves further up in the coupling. While the specimen holder is still

being pressed up, release the plastic flange so that it jumps back into

place. The quick-coupling now grips the specimen holder stud and by

turning the specimen holder the driving pins on the quick-coupling

will engage the specimen holder so that it will rotate with it. (To

remove the specimen holder, press the quick-coupling's plastic

flange down with the thumbs while the other fingers are ready to

'catch' the specimen holder, which will fall down). Thereafter the

quick-coupling with the specimen holder can be adjusted sideways in

relation to the disc.

When grinding with grinding paper, adjustment shall be effected in

such a way that the grinding paper is used to its full extent.

When grinding, the specimens should move out over the edge. When

polishing, as much of the polishing cloth as possible should be used,

but in such a way that the specimens do not move out over the edge.

With use of matching diameters for the various discs (see chapter 3),

a fixed eccentricity can be used so that adjustment in between each

step is avoided.

Abramin is equipped with 8 program steps into which data such as

time, number of revolutions and cooling medium (water or lubricant)

can be entered. This presents the opportunity to build a specimen

preparation with up to 8 different steps, for example 4 grinding steps

and 4 polishing steps. Often the preparation data in the 4 grinding

steps will be the same and, therefore, the same program step can be

used for all 4 grinding steps.

Mounting the Grinding and

Polishing Disc

Inserting the Specimen Holder

Programming

Abramin

Instruction Manual

15

Explanation Key 1 Key 2 Key 3 Display: min/sec

Programming of grinding step (example)

1 Turn on main switch. 1 300 rpm 

2 Change from "Stand-by" to "On".

When grinding, operate with 300

rpm and cooling water. Only time

needs to be adjusted.

 00.00

3 Setting of time. Counts in steps

of 5 seconds. At constant

pressure change occurs quickly.

 00.50

4 Reduction of time. 00.45

Programming of polishing step (example)

1 Select the program step. 2 300 rpm  00.00

2 Change to 150 rpm 150 rpm 00.00

3 Turn off cooling water and

change to Doser.  00.00

4 Set time (1 min 30 sec)  01.30

Abramin

Instruction Manual

16

When the selected preparation step is programmed the various data

can be entered on an empty process card (100 cards supplied with

Abramin).

The left half of the card is for all necessary information needed when

grinding or polishing, such as: which program step to select, which

polishing disc or which cloth should be used, which grain size, paper

or diamond type should be added and the grinding or polishing

pressure to be set.

On the right half enter the data which is programmed in the steps.

For example: time, speed and if water or lubricant is to be used.

The cards can be used as a file covering the different materials

prepared in the laboratory. Fix the card in the holder on the front

plate of Abramin so that the various steps in the preparation can be

followed throughout the entire process. To make place for this, fold

the card along the thick vertical line.

For grinding, use 300 rpm to get a quick grinding and to make sure

that the grinding paper is held as firmly as possible when a grinding

disc in accordance with the Knuth-Rotor principle (ROTAL) is used.

For polishing, 150 rpm - which is the same number of revolutions at

which the specimen holder rotates - is generally used. This gives a

perfect and uniform polishing all over the specimens without

directional preferences which reduces the pull-out of inclusions. In

the case of routine specimens, polishing can be carried out at 300

rpm to minimise the time. Grinding and polishing speeds are also

dependent on the eccentricity between the axis of the turntable and

the specimen holder. Large eccentricity gives relatively high speed

and thereby a high rate of abrasion. By shifting the quick-coupling

with the handwheel (fig. 3.) the relative speed can be varied from 0

(when the turntable rotates at 150 rpm and by placing centre over

centre) to max.

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