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SOLDERING, cracks, BROKEN part, BENT part, heat MARKS or shrinkage pits.

Soldering, cracks, broken part, bent part, heat marks or shrinkage pits.

Lack of fill, COLD SHUT, severe CHILL, chill, flow LINES

Lack of fill, cold shut, severe chill, chill, flow lines

• COLD DEFECTS 
• HOT defects
• MISCELLANEOUS defects

• HOT CHAMBER PROCESS
• COLD chamber process

PRESSURE die casting is the process in which the MOLTEN metal is forced under high pressure into a cavity in a metal disc with in fraction of a SECOND and ALLOWED to solidify.

Pressure die casting is the process in which the molten metal is forced under high pressure into a cavity in a metal disc with in fraction of a second and allowed to solidify.

• POT TRANSFER MOLD
• PLUNGER transfer mold

PERFORMS are small pellets or TABLETS of molding material that are formed to shape in a special performs mold at ROOM temperature. Curing won't TAKES place only DENSIFICATION.

Performs are small pellets or tablets of molding material that are formed to shape in a special performs mold at room temperature. Curing won't takes place only densification.

• FLASH MOLD
• FULLY positive mold
• Semi positive mold
• Landed positive mold

Bulk FACTOR is defined as the ratio of the VOLUME of the LOOSE POWDER to the volume of the molded PART.

Bulk factor is defined as the ratio of the volume of the loose powder to the volume of the molded part.

War PAGE is the deviation of the MOLD part from its REQUIRED SHAPE.

War page is the deviation of the mold part from its required shape.

It is the PROMINENT in-homogeneous SNAKE like strands on the surface of MOLDING.

It is the prominent in-homogeneous snake like strands on the surface of molding.

It is the WITNESS MARKS of two or more melt flow FRONTS at their joining ZONE.

It is the witness marks of two or more melt flow fronts at their joining zone.

HOLLOWS CREATED on or in the MOLDED PART.

Hollows created on or in the molded part.

SINK marks are the LOCALIZED contractions or the DEPRESSIONS on the SURFACE of the MOLDINGS.

Sink marks are the localized contractions or the depressions on the surface of the moldings.

Sink mark, STREAKS, Blisters/Bubbles, Weld line, Ejector MARKS, Cold weld, Jetting, War PAGE

Sink mark, Streaks, Blisters/Bubbles, Weld line, Ejector marks, Cold weld, Jetting, War page

An UNDERFEEDING MOLD is the one in which the FEED system is arranged to feed into the underside of the COMPONENT.

An underfeeding mold is the one in which the feed system is arranged to feed into the underside of the component.

A STRIPPER plate mold CONSISTS of a fixed plate, a MOVING mold plate and a stripper plate. There are two DAY light when opened. This is called double daylight stripper plate mold.

A stripper plate mold consists of a fixed plate, a moving mold plate and a stripper plate. There are two day light when opened. This is called double daylight stripper plate mold.

When a basic mold is OPENED, there is only one SPACE or “DAYLIGHT “ between the TWO mold halves. This is called a single daylight mold.

When a basic mold is opened, there is only one space or “daylight “ between the two mold halves. This is called a single daylight mold.

For the components which has INTERNAL undercut on one SIDE of the WALL.

For the components which has internal undercut on one side of the wall.

A side CORE is a local core which is normally MOUNTED at right angled to the MOLD axis for forming a hole or recess in the side face of a molding. The side cavity performs a SIMILAR function to the side core, in that it permits the molding of components which are not in line of draw. This element allows the components with a projection or projections on one or more of their side FACES.

A side core is a local core which is normally mounted at right angled to the mold axis for forming a hole or recess in the side face of a molding. The side cavity performs a similar function to the side core, in that it permits the molding of components which are not in line of draw. This element allows the components with a projection or projections on one or more of their side faces.

FINGER cam length =(M/SIN Q) +(2C) L Sin 2Q

Where 

 M= split movement

 Q=angle of finger cam 

 L=working length 

 C =clearance

Finger cam length =(M/Sin Q) +(2c) l Sin 2Q

Where 

 M= split movement

 Q=angle of finger cam 

 L=working length 

 C =clearance

• FINGER CAM actuation
• Dog leg cam actuation 
• Cam TRACK actuation
• Spring actuation
• Hydraulic actuation

Any recess or PROJECTION on the outside SURFACE of the COMPONENT which prevents its removal from cavity is termed an EXTERNAL undercut

Any recess or projection on the outside surface of the component which prevents its removal from cavity is termed an external undercut

A MOLDING which has a RECESS or PROJECTION is TERMED as an UNDERCUT molding

A molding which has a recess or projection is termed as an undercut molding

• Low MELT and MOLD temperature
• High INJECTION pressure 
• Long injection TIME
• PRESENCE of filler materials and its content

• Increase of MATERIAL temperature.
• Increase of MOLD temperature.
• Increase in WALL thickness.
• LOW injection pressure.

When a HOT plastic cools inside a MOLD, it contracts by an amount DEPENDING on the MATERIAL being processed and the final product is smaller than the mold size is CALLED shrinkage.

When a hot plastic cools inside a mold, it contracts by an amount depending on the material being processed and the final product is smaller than the mold size is called shrinkage.

1. TIE ROD ACTUATION
2. Length bolt actuation
3. Chain actuation
4. DIRECT actuation

This INJECTION TECHNIQUE is used mainly for the injection of CIRCULAR box type moldings and for moldings with thin wall SECTIONS.

This injection technique is used mainly for the injection of circular box type moldings and for moldings with thin wall sections.

The STRIPPER ring is a local stripper plate and it is used on molds with ONE or two IMPRESSION only. The stripper ring is MADE to seat in the mold plate.

The stripper ring is a local stripper plate and it is used on molds with one or two impression only. The stripper ring is made to seat in the mold plate.

This is the simplest to INSTALL. It is EASY to connect to the fixed or MOVING half. The medium of actuation is compressed AIR.

This is the simplest to install. It is easy to connect to the fixed or moving half. The medium of actuation is compressed air.

A valve ejector is basically a LARGE diameter ejector pin. It is USED for the INJECTION of large components.

A valve ejector is basically a large diameter ejector pin. It is used for the injection of large components.

The main PURPOSE of blade ejector is for the INJECTION of very slender parts such as ribs and other projections which cannot be SATISFACTORILY ejected by the standard type of ejector PIN.

The main purpose of blade ejector is for the injection of very slender parts such as ribs and other projections which cannot be satisfactorily ejected by the standard type of ejector pin.

This method of injection is SUITABLE for THIN WALL box TYPE moldings because of the effective injection AREA obtainable are greater.

This method of injection is suitable for thin wall box type moldings because of the effective injection area obtainable are greater.

In this method, the MOLDING is ejected by MEANS of a HALLOW ejector pin which is called SLEEVE.

In this method, the molding is ejected by means of a hallow ejector pin which is called sleeve.

This is the most common and SIMPLE type of INJECTION. The molding is EJECTED by the APPLICATION of a force by ejector pins.

This is the most common and simple type of injection. The molding is ejected by the application of a force by ejector pins.

1. Pin INJECTION 
2. Sleeve injection
3. Stripper BAR injection
4. Blade injection
5. Valve injection
6. Air injection
7. Stripper ring injection
8. Stripper PLATE injection

This is a CURVED variation of the SUBSURFACE gate and for that REASON it is sometimes CALLED a “curved subsurface gate” or “curved TUNNEL gate”.

This is a curved variation of the subsurface gate and for that reason it is sometimes called a “curved subsurface gate” or “curved tunnel gate”.

AUTOMATIC degating with less mark ALSO CALLED as sub SURFACE gate or submarine gate.

Automatic degating with less mark also called as sub surface gate or submarine gate.

This gate is FORMED by machining a MATCHING semi circular channel in both MOLD plates between the runner and impression.

This gate is formed by machining a matching semi circular channel in both mold plates between the runner and impression.

USED for 3 plate MOLD and under FEED mold. SMALL degating MARK will be there.

Used for 3 plate mold and under feed mold. Small degating mark will be there.

This is a long rectangular type edge gate and it is used for large thin WALLED COMPONENTS to ASSIST in the production of war page FREE products.

This is a long rectangular type edge gate and it is used for large thin walled components to assist in the production of war page free products.

The function of this gate is IDENTICAL to that of a DIAPHRAGM gate. This type of gate is used for tabular type moldings when more than one impression is required in a SIMPLE TWO MOLD.

The function of this gate is identical to that of a diaphragm gate. This type of gate is used for tabular type moldings when more than one impression is required in a simple two mold.

This GATE is used for SINGLE impression TUBULAR shaped moldings on two PLATE molds.

This gate is used for single impression tubular shaped moldings on two plate molds.

It can be considered as a VARIATION of basic rectangular edge gate and is used to feed CERTAIN type of molding. In this type of gate we have a better CONTROL over the flow rate. Main disadvantage is that it LEAVES big REMNANT mark after degiating.

It can be considered as a variation of basic rectangular edge gate and is used to feed certain type of molding. In this type of gate we have a better control over the flow rate. Main disadvantage is that it leaves big remnant mark after degiating.

This is PARTICULAR gating technique for feeding solid block TYPES moldings. This is mainly used to avoid undesirable jetting on the MOLDED part.

This is particular gating technique for feeding solid block types moldings. This is mainly used to avoid undesirable jetting on the molded part.

Fan gate can be considered as the other TYPE of edge gate but it does not have a constant width and DEPTH. The fan shape spreads the FLOW of the melt as it enters the impression and a more UNIFORM FILLING is obtained with less flow marks and surface finish.

Fan gate can be considered as the other type of edge gate but it does not have a constant width and depth. The fan shape spreads the flow of the melt as it enters the impression and a more uniform filling is obtained with less flow marks and surface finish.

This is the general purpose GATE and it is a rectangular CHANNEL MACHINED in on mold plate to CONNECT the runner to the IMPRESSION.

This is the general purpose gate and it is a rectangular channel machined in on mold plate to connect the runner to the impression.

When the molding is DIRECTLY FED from a sprue or SECONDARY sprue, the feed section is term as sprue GATE.The main disadvantage with this type of gate is that it leaves a large gate mark on the molding. This sprue gate is used only for single impression molds.

When the molding is directly fed from a sprue or secondary sprue, the feed section is term as sprue gate.The main disadvantage with this type of gate is that it leaves a large gate mark on the molding. This sprue gate is used only for single impression molds.

• FULLY ROUNDED
• Rectangular
• HEXAGONAL
• TRAPEZOIDAL
• Modified trapezoidal