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turko
03-02-2010, 05:54 PM
Dear Brothers,

Those were the days guns made as forged and machine cut, buffer polished and slow rust blued...

Today's guns are being made with minimum of waste material and human workmanship...But still
shining and robust...

One can say, "as compared to past, today's guns are inferior on workmanship but superior on material"...
Which considered true on a very large percentage...

Today's most preferred manufacturing methods are; CNC machining, Investment Casting, Metal Injection
Moulding, Plastic Injection Moulding, Die Cutting for shape, electrical or chemical polishing or grid blasting before finish and two component mixture painting, nitriding, parkerising, plasma diffusing for final finish...
However, technologie has been going so fast that one will not able to recognize the old and new in very
near future.

Dies are necessary for first stage, forming the gun ,except on CNC Machining...Investment Casting which
applied rather heavy parts of gun like slides, frames...Etc., needs precise wax moulds injected in precise
dies for metal alloy replacings , and MIM or Metal Injection Moulds which applicable for small parts like
trigger, hammer, trigger bar, ejector...Etc., needs also very precise dies for metal dusts with bonding material.
This process, on final stage, gives nearly one fourth or third shrinked products as compared to injected form
and really needs very high degree of care on both planning and process...

CNC Machining needs no dies, but works very speedy on cutting within a sole unit and can be considered as
an alternative for die compulsory methods like investment casting...Some manufacturers have been thinking
to decide between the two for their future products via the calculated amounts.

Grid Blasting are being applied for starting stage before finish and if a dark effect is required, the works remain
on this application for final finish, if polish is needed, electro or chemical polishing. are in order...

Simplest finish of today is two component painting, protecting the gun from outside effects in a very close order
like polymers...Parkerising has been going to fade nowadays, and most popular one, nitriding, with trade names
as "Tennifer", makes the surface nearly as rustproof as stainless steel, and as hard as Correndum whitin a very
thin layer... Plasma Difussion like Titanium Nidride is somewhat more expensive which giving close results as
nitriding...

Plastic injection for non stressed parts like frames, triggers, or,even metal inserted hammer or strikers is also used
very largely on today's guns and in fact, there is little between the polymer injected parts and polymer injected
cover using guns in department of robustness and usability since heat or solvents are also enemy of plastic grip
plates closing vital gun parts on steel framed guns...

Dear Pakguns Brothers, please know and admire your valuables like Local Makers working with their hands...

Best regards.

A.Abbas
03-02-2010, 06:54 PM
Dear Brothers,

Those were the days guns made as forged and machine cut, buffer polished and slow rust blued...

Today's guns are being made with minimum of waste material and human workmanship...But still
shining and robust...

One can say, "as compared to past, today's guns are inferior on workmanship but superior on material"...
Which considered true on a very large percentage...

Today's most preferred manufacturing methods are; CNC machining, Investment Casting, Metal Injection
Moulding, Plastic Injection Moulding, Die Cutting for shape, electrical or chemical polishing or grid blasting before finish and two component mixture painting, nitriding, parkerising, plasma diffusing for final finish...
However, technologie has been going so fast that one will not able to recognize the old and new in very
near future.

Dies are necessary for first stage, forming the gun ,except on CNC Machining...Investment Casting which
applied rather heavy parts of gun like slides, frames...Etc., needs precise wax moulds injected in precise
dies for metal alloy replacings , and MIM or Metal Injection Moulds which applicable for small parts like
trigger, hammer, trigger bar, ejector...Etc., needs also very precise dies for metal dusts with bonding material.
This process, on final stage, gives nearly one fourth or third shrinked products as compared to injected form
and really needs very high degree of care on both planning and process...

CNC Machining needs no dies, but works very speedy on cutting within a sole unit and can be considered as
an alternative for die compulsory methods like investment casting...Some manufacturers have been thinking
to decide between the two for their future products via the calculated amounts.

Grid Blasting are being applied for starting stage before finish and if a dark effect is required, the works remain
on this application for final finish, if polish is needed, electro or chemical polishing. are in order...

Simplest finish of today is two component painting, protecting the gun from outside effects in a very close order
like polymers...Parkerising has been going to fade nowadays, and most popular one, nitriding, with trade names
as "Tennifer", makes the surface nearly as rustproof as stainless steel, and as hard as Correndum whitin a very
thin layer... Plasma Difussion like Titanium Nidride is somewhat more expensive which giving close results as
nitriding...

Plastic injection for non stressed parts like frames, triggers, or,even metal inserted hammer or strikers is also used
very largely on today's guns and in fact, there is little between the polymer injected parts and polymer injected
cover using guns in department of robustness and usability since heat or solvents are also enemy of plastic grip
plates closing vital gun parts on steel framed guns...

Dear Pakguns Brothers, please know and admire your valuables like Local Makers working with their hands...

Best regards.

Good article,

To my knowledge (correct me if I am wrong), Nitriding is a surface harding technique wear resistance "Not Surface Coating for color", for the surface coat/color, improved phosphating is currently in use for steel parts, mainly Manganese Phosphate in Firearms.

Tennifer is proprietary/trade name of Glock for salt-bath nitriding.

Slayerjatt
03-02-2010, 09:00 PM
nice article sir. thanks for sharing. and i second a.abbas sb's opinion.

turko
04-02-2010, 11:42 AM
Tenifer process is a surface finish and enough for guns to get protected from outside effects ...It is
not a plating and its natural color is matt grey but can be darkened by application of suitable
coloring methods... What important for after coloring process is to stay away from applications with
strong surface cleaning methods as normal parkerizing which is made by acid... Surface can be soft
grid blasted and painted thereafter... Even sand blasting can easily spoil very thin surface layer...

This process is belonged "Degussa" of Germany...Glock , as many other companies, gets use of it,
but , got it to a well known name than the times before it used... On contrary of common belief, there
is no special surface process and polymer kind with Glock...Herrn. Gaston is a plastics user being aware
of processes and materials on very high degree before starting handgun business.