Metallographic pre - treatment concept、Process
I . Basic metallographic production process
1.Cutting : Used to intercept the formation of a sample of the
sample cut off the surface of the more flat, the smaller the
deformation, the follow-up of the grinding, the shorter the
polishing time, the use of less supplies.
2.Mounting: The sample is buried in the resin so that the
subsequent treatment is convenient and the preparation
results are improved；Divided into cold buried, vacuum,
thermal buried three
*Cold Mounting : The sample into the mold, and then the
resin and hardener mixture into the mold, at room
temperature, under pressure hardening for the economy,
convenient mode of buried mold.
*Vaccum Impregnation : Specifically for the embedding
of the porous material (Porous Sample) in the way; in the
vacuum under the cold embedded, making the resin easy
to penetrate the porosity (porosity) to enhance the structure
of the sample, to avoid the process of grinding particles
(adrasive) fill Sample caused by miscarriage of justice.
*Hot Mounting: With hot-buried machine, in the
high temperature, high pressure state completely
hot-buried action,fast, good effect, but need to invest
in thermal machine and does not apply to heat
sensitive samples.
3.Grinding : The sharp adrasive, which is fixed on the
substrate, is worn away from the surface
of the sample.
Many small pieces of debris, but also the resulting
deformation of the debris, the higher the removal rate,
The abrasive material used was Si-Paper, which was
divided into Plan Grinding and Fine Grinding.
4.Polishing : Sprinkle a fine diamond liquid or alumina suspension
on a soft polishing cloth to remove the Deformation and
Scratches caused by the grinding step to obtain a scratch-free
mirror and to obtain a non-scratching mirror Under the
observation of the microstructure of the sample.
II .True Structure of the elements
1. No deformation : 2.No scratches :
3 . No pull- out 4.No introduction of foreign
5 . No smearing element
6.No relief or round edges
7 . NO thermal damage : No thermal damage:
no bumps or marginalization
三 . The variable that affects the result (Preparation parameters)
1 . SurfaceDisk material: sandpaper diamond
plate or polishing cloth
2.Abrasve Grinding grain: Hardness type
3 . Grit/Grain: The size of the abrasive particles
4.Lubricant Lubricant: used for cooling and lubrication
5 . Rotationl Speed: Rotating speed
6.Force: The power applied to the sample
7 . Time: The length of time
Cutting Machine -ACM-200A
Specialty:
1. Two-seat screw fast fixture, clamping objects do not
shake when cutting
(Contains irregular objects)
2. Precision spindle high speed operation. Low noise
3. Precision and smooth level of feed, cutting surface
high precision
4. Over-phase overload protection device, effective
protection of the main motor
5. Circulating four flow water, providing good cooling effect
6. Large window, bright lighting, suitable for monitoring
when cutting operation
* Cut off capacity: diameter 30mm(max)/ Cube (12x60mm)
* Cut off the way: Manual level feed / automatic type
* Cut the spindle speed:2800rpm
* Fixture holding: Opening 70 x high 30, the fixture can
move around 10mm
* Main motor:1HP Three phases
* Cooling device:1/8 HPThree phases
* Cutting power:1 HP(Three phases)
* Applicable wheel:205x1.2x25.4 mm
* Cooling water tank:20 gal
* Machine type: Site type
* Machine size:720x540x1170mm(WxDxH)
* power supply:AC220V/60Hz(Can choose 380V/440V)
* weight:175 Kg
* Standard accessories: Y-type wrench; cooling oil (2L);
hexagonal wrench; L-shaped wrench
Mounting Machine -MP-32H
Specialty:
1. Strong electric heating fast, forming time only 8-12 minutes
2. Manual mining single hydraulic pump, so that hydraulic
cylinder lift smoothly
3. Single-cylinder molding machine (mold)
4. Maximum mechanical force:250kg/cm2
Maximum use pressure :150kg/cm2
Forming pressure:50-100kg/cm2
5. 0~399℃Digital touch thermometer
specification:
* Buried size:32mm(diameter)
* Drive mode: Hand pressure type
* Number of buried: 1 / time
* Pressure system:250kg/cm2(max)
* Temperature control system:0~399℃Digital display
* heating time:15 Minute
* electro-thermal:1200W
* Machine type: desktop type
* Machine size:370x340x440mm(WxDxH)
* Cooling system: water circulation cooling
* power supply:AC 220V(Simplex)
* Standard accessories: Resin (2kg); Clip; funnel;
Stripping oil (1 cans); Spoon
Grinding/Polish Machine- PM2-200SA
Specialty:
1. FRP body, beautiful rust-resistant
2. When the grinding disc is rotated, the balance is
stable and the grinding surface is flat and not tilted
3. Replacement of PVC grinding disc, more hug fast and easy
4. Double-disc and double-replacement design, coarse
grinding. Refined to polished quickly completed.
5. Double drop pipe design, to prevent grinding residue residue
specification:
* Grinding number: PVC double disc can be replaced
* Grinding disc:203 mm
* Grinding speed:250~500rpm
* Main motor:300W DC Motor
* power supply:AC 110V/60Hz/ Simplex
* Cooling device: 2 pieces
* Machine type: desktop type
* Machine size:700x590x320mm(WxDxH)
* Standard accessories: Alumina powder (100g);
abrasive cloth (2pcs) water sandpaper(3pcs);
drip bottle (2pcs)
