Tip Assemblies

[ 01 ]

Right price lifetime combination.

Maxi Melt uses the right material combination which enables a long lifetime. The waer protection is focussed on the right components.

[ 02 ]

Redesign geometry tip assemblies.

We are able to design the correct screw tip assembly set for the right polymer.

[ 03 ]

Special anti friction coatings available.

One of the main problems with plastification of sensitive polymers is the friction in the tip assembly, which can destroy and overheat the melt. In our philosophy, both the screw and tip assembly should work together and create an optimal melt condition.

[ 04 ]

Body

Tip assemblies from a diameter of 30 mm up, the body is made from 34CrAlNi7 material (1,8550). The flights are Plasma-welded with eutalloy borotec 10009 to have a wear-resistant layer between the body and the check ring.

Tip assemblies smaller than 30 mm the body is made from through hardened material X155CrMoV12, (1,2379) The thread is tempered to avoid breaking.

Reinforcement for body

Type Solvent

Base Element

Alloy Elements

Hardness [HRC]

(a) Hardness of matrix, tungsten carbides have a hardness of 89 HRC.

Abrasion resistance

(x good) to (xxxxx excellent)

Corrosion resistance

(x good) to (xxxxx excellent)
Eutalloy borotec 10009

Ni

Cr, C, Fe, B, Si

54 - 59 HRC

+++

+

Eutalloy borotec 10009

Type Solvent

Eutalloy borotec 10009
Base Element

Ni
Alloy Elements

Cr, C, Fe, B, Si
Hardness (HRC)

54 - 59 HRC
Abrasion resistance

+
+
+
Corrosion resistance

+

Check ring + seat

For the checkring and seat, we recommend, based on our experience, the use of hardened material with a hardness of 58 to 62 HRC. We can offer standard materials like X155CrMoV12, (1,2379) but also special powder metallurgical (KPM1 or KPM2) for wear and or corrosion improvements with or without coatings.

Materials for tip assemblies

MM Code

Base Material

Treatment

Abrasive Wear Resistance

Corrosive Wear Resistance
MM121

Cold work to Steel

Hardening

+++

++
KPM1

Powder Metallurgy Steel

Hardening

+++++

+++
KPM2

Powder Metallurgy Steel

Hardening

++++

+++++

MM121

MM Code

MM121
Base Material

Cold work to Steel
Treatment

Hardening
Abrasive Wear Resistance

+
+
+
Corrosive Wear Resistance

+
+

KPM1

MM Code

KPM1
Base Material

Powder Metallurgy Steel
Treatment

Hardening
Abrasive Wear Resistance

+
+
+
+
+
Corrosive Wear Resistance

+
+
+

KPM2

MM Code

KPM2
Base Material

Powder Metallurgy Steel
Treatment

Hardening
Abrasive Wear Resistance

+
+
+
+
Corrosive Wear Resistance

+
+
+
+
+

Coatings for tip assemblies

MM Code

Surface coating

Technology

Hardness µm

Thickness

Color

Friction Coefficient Ra
MMFC

FLASH CHROMIUM

PLATING

58/60 HRC

0,02/0,03 MM

HIGH POLISHING

0,17
MMTC

THICKNESS CHROMIUM

PLATING

58/60 HRC

0,10/0,15MM

HIGH POLISHING

0,17
MMCRN

ALCRN

PVD

2800-3200 HV

2-8 µm

VIOLET

0,35
MMZRN

ZRN

PVD

2800-3100 HV

2-4 µm

CLEAR YELLOW

0,45
MMTIN

TIN

PVD

2000-2500 HV

2-4 µm

GOLD YELLOW

0,45
MMNOX

CRNOX

PVD

2000-2500 HV

2-4 µm

IRIDESCENT RAINBOW

0,25
MMHDLC

HDLC

PVD

5000 HV

1-3 µm

BLACK RAINBOW

0,05/0,15
MMEXT

HDLC

ARCO

2500 HV

2-6 µm

GREY

0,3/0,4