For plastic injection mold design, one of the most important factors is how and where the gate should be located. As the mold opening, the gate is where the molten plastic flows into the final part. It serves as the boundary between the part and the scrap, so its location, size, and shape play an important role in how everything should be constructed, from structural integrity to exterior appearance of the finished product.Below is gate type we often choose:
Direct Gate(Sprue gate):
Pros:
1. Little pressure loss;
2. Easy preparation.
Cons:
1. High stress around the gate;
2. Gate (runner) needs to be trimmed manually;
3. Obvious gate scars will be left on the surface.
Application:
1. Suitable for production of large and deep barrel-shaped plastic parts. However, warping can easily occur due to contractibility and stress when applied on shallow and flat plastic parts.
2,For plastic parts that do not allow gate marks on the exterior, the gate can be designed on the inner surface of the parts.
Download Gate Virtual Calculator for PC free at BrowserCam. Built Gate Virtual Calculator application suitable for Android mobile in addition to iOS but you can even install Gate Virtual Calculator on PC or laptop. Ever thought how can one download Gate Virtual Calculator PC? Download Noise Gate. A user-friendly noise reduction tool that edits audio to remove unwanted distortion and background sound. Purchased Video Lectures. The plot line of the game involves the regions around the cities of Baldur's Gate and Amn. These cities are involved in a plot to destabilize the entire Sword Coast and precipitate a war. Chaos threatens to overwhelm the Sword Coast. The state of Amn is under siege to the south, the High Moor is being overrun in the.
Side Gate:
Noise Gate For Pc
Pros:
1. Simple structure, easy processing;
2. Easier to remove the gate.
Cons:
1. Automatic separation of the part and the gate is not allowed;
2. Gate marks are easily left on the plastic part.
Parameters:
1. Gate width W = (1.5~5.0)mm. Usually W = 2H, which may be appropriately increased for large and transparent plastic parts.
2. Height H = (0.5~1.5)mm. Specifically speaking, usually H = (0.4~0.6)d for commonly seen ABS and HIPS. Among them, d refers to the basic wall thickness of the plastic part; H = (0.6~0.8)d for materials with poor fluidity, like PC and PMMA; the suggested gate height for POM and PA is H = (0.6~0.8)d, so as to help avoid shrink marks and wrinkles by guaranteeing sufficient pressure holding, because though these materials possess good fluidity, they become solid very fast with larger contractibility; for materials like PE and PP, gate height H = (0.4~ 0.5)d, because the small-sized gate is helpful for molten plastic shear thinning, thus reducing stickiness.
Application:
1. Suitable for production of plastic parts of various shapes, but it is will not be selected for slender barrel-shaped parts.
Tab Gate:
Pros:
1. It is a form evolved form the side gate, so it shares the various advantages of the side gate;
2. It is a typical impingement gate that can effectively prevent molten plastic jetting.
Cons:
1. Automatic separation of the part and the gate is not allowed;
2. Obvious gate scars are easily left on the surface.
Parameters:
Refer to the side gate parameters for application.
Application:
Suitable for flat plastic parts that impose requirements on surface finish.
Fan Gate:
Gate Calculator For Pc
Pros:
1. The horizontal distribution of the molten plastic is more uniform when passing through the gate, helpful for reduction of plastic part stress;
2. Lower the possibility of air getting into the cavity, to avoid the occurrence of defects, like silver lines and bubbles, etc.
Cons:
1. Automatic separation of the part and the gate is not allowed;
2. Long gate marks are left on the edge of the plastic part, which need to be flattened by a tool.
Parameters:
1. The commonly used height H = (0.25~1.60) mm;
2. Width W = 8.00 mm to ¼ of the cavity width at the gate end.
3. The section area of the gate should be larger than that of the sub-runner.
Application:
Usually used for production of wide but thin plastic parts, as well as transparent plastic parts and those with poor fluidity, like PC and PMMA, etc.
SubmarineGate:
Pros:
1. Flexible choices of gate location;
Automatic separation of the part and the gate is allowed;
3. Smaller gate marks;
4. Applicable for both 2-plate and 3-plate molds.
Cons:
1. Plastic powder is easily dragged at the gate position;
2. Stress mark is easily created at water entry;
3. Plastic films need to be sheared manually;
4. Great pressure loss from the gate to the cavity.
Parameters:
1. Gate diameter d = 0.8~1.5mm;
2. The plastic flow direction and the vertical direction form an angle a between 30°and 60°;
3. The taper b is between 15° and 25°;
4. Distance to the cavity A = (1.5~3.0)mm.
Application:
Suitable for plastic parts that do not allow exposed gate marks on the exterior. For a multi cavity mold, the resistances from the gate to each cavity should be kept as close as possible, so as to avoid viscous flow and obtain better flow balance.
Banana Gate:
Pros:
1. Automatic separation of the part and the gate is allowed;
2. The gate area does not need additional processing;
3. No gate marks will be left on the exterior of the plastic parts.
Cons:
1. Stress marks may show on the surface;
2. Complicated processing;
3. Easily broken and thus blocking the gate if not appropriately designed.
Parameters:
1. Gate diameter at water entry end d = (Φ0.8~Φ1.2) mm, length = (1.0~1.2) mm;
2. A = approx. 2.5D;
3. Φ2.5min* refers to the gradual transition from the large end 0.8D to the small end Φ2.5.
Application:
Normally used for ABS and HIPS, suitable for neither crystalline materials like POM and PBT, nor high-rigidity materials like PC and PMMA, so as to avoid the curvy runner from being broken and thus blocking the gate.
Point Gate:
Pros:
1. Flexible choices of gate location;
2. Automatic separation of the part and the gate is allowed;
3. Smaller gate marks;
4. Low stress around the gate.
Cons:
1. High injection pressure;
2. Complicated structure, usually employing the 3-plate structure.
Parameters:
1. Usually the gate diameter d = (0.8~1.5) mm;
3.The gate length L = (0.8~1.2) mm;
4. To help pull the gate broken from the root, a taper should be set for the gate, a = approx. 15°~20°;
the gate and the runner are joined by arc R1 to ensure that the plastic part is not damaged when pulling the point gate broken; R2 = (1.5~2.0) mm; R3 = (2.5~3.0) mm; height h = (0.6~0.8) mm.
Application:
Usually used for the production of large plates and bottom cases. The proper distribution of gate can help reduce the flow distance of molten plastic and thus guarantee satisfactory distribution of melting marks; also able to be used for production of long barrel-shaped plastic parts to improve ventilation.
All copyright reserved by injection molding manufacturer Sositar Mould
Learn how use GATE Virtual Calculator 2022 Online. Practice solving equations online and get free PC app download link for GATE Virtual Calculator.
GATE 2022 is going to be conducted by IIT Kharagpur. So it's going to come with a lot of difficulties. One of them is using a GATE virtual calculator. So what is it about the GATE virtual calculator that makes candidates want to learn it properly? Well, for one, scientific calculators are not allowed in the GATE exam. And for two, GATE virtual calculators monitor the candidate during their exam to assess how long they use the calculator, something physical scientific calculators cannot do. But what you must understand is that the GATE virtual calculator is just a virtual version of a GATE scientific calculator, so there is no functional difference between them. So, if you already know how to use a scientific calculator, then using a GATE virtual calculator will not be an issue for you.
This article will guide you into using the GATE virtual calculator, its features, whether there is a GATE calculator app for you to practice, whether you can get it offline for PC, and so on. So keep reading and find out!
Contents
GATE Virtual Calculator Download for PC
We want to rest some queries related to obtaining a virtual calculator for your device to practice with your GATE preparations. Firstly, there is no dedicated calculator online just for the GATE exam. There is also no official GATE calculator app. However, Android users may find scientific calculator apps from unofficial, third-party sources. One such source is found here, and it is a highly rated app in the Play Store. In addition, some phones come with an in-built calculator that can be switched to a scientific calculator.
However, for desktop and laptop users, the TCS iON website does provide a scientific calculator in virtual mode. So, you can use this online calculator for your GATE practice.
If you're worried that you have to use your internet connection to use it, downloading it as an offline virtual calculator is possible. Currently, you can download the scientific calculator for PC and Mac (desktop and laptop) only. Follow the steps below:
- Go to the TCS iON weblink.
- Make sure you are connected to the internet before doing this, otherwise the page won't load.
- When you see the calculator on-screen, press Ctrl+S.
- You will be prompted to save an HTML file, rename it, and press 'Save'.
- Go to the folder where you saved the file.
- Turn your Wi-Fi off and open the HTML file.
- The file will open on your default web browser and should work as intended.
How to Use GATE Virtual Calculator?
We've provided some insights on how to use the GATE virtual calculator in a manner that will help you streamline your exam process. The following should give you an idea of what you can and should do with a virtual scientific calculator:
- Understand how memory management works:
- 'MS' stores a value in memory
- 'M+' adds to the value stored in memory
- 'M-' subtracts a certain amount of value from the stored value
- 'MR' recalls the memory, i.e. pressing it will cause the stored value to appear on the screen
- 'MC' will clear the memory of any values and keep it empty
- Pressing MS while another value is already stored will replace the previously stored value with the newly stored value
- The virtual calculator's angle unit is set to Degree by default, but double-check whether it is in Degree or Radial before you begin any calculations
- Press C right before you begin any calculations to clear up any calculations previously performed on it, even if it wasn't by you
- Get into the habit of using Pi (π), log, Exp, and whatnot to save yourself a lot of time during calculations
- Always include parentheses if the equation involves them
The following points are what you must make sure you do not do during the exam:
- Do not change the angle unit whilst calculating equations
- Do not perform multiple calculations simultaneously
- Do not leave the parentheses and the calculations within it unbalanced
Limitations of GATE Virtual Calculator
The virtual calculator does provide many candidates the leeway to calculate some of the most challenging calculations that they cannot do on time without a calculator. However, it does come with its fair share of disadvantages. Here are some points about it that will put any candidate in an uncomfortable position:
- You cannot use the keyboard to type in your calculations
- Candidates who are inept with mouse controls will have a difficult time using the calculator
- Calculations involving logarithmic or hyperbolic functions will provide a precise output of no more or less than 5 digits
- Modulus operations that provide 15-digit outputs may be imprecise
- The calculator registers inputs and outputs between 10-323 to 10308
Frequently Asked Questions on GATE Virtual Calculator
- Is a scientific calculator allowed in GATE?
As mentioned at the start, scientific calculators are not allowed in GATE exams.
- How can I get the GATE offline virtual calculator download for PC?
The TCS iON calculator link provided above can help. For offline use, you can save the HTML page on your computer and use it.
- Is there a GATE calculator app?
Not officially. We have provided a link to an unofficial app that has received positive feedback from its users above.
- Can I use a keyboard to use the virtual calculator?
No, you cannot use the keyboard to type calculations into the virtual calculator. You will be required to use the mouse instead.
Parameters:
1. Gate width W = (1.5~5.0)mm. Usually W = 2H, which may be appropriately increased for large and transparent plastic parts.
2. Height H = (0.5~1.5)mm. Specifically speaking, usually H = (0.4~0.6)d for commonly seen ABS and HIPS. Among them, d refers to the basic wall thickness of the plastic part; H = (0.6~0.8)d for materials with poor fluidity, like PC and PMMA; the suggested gate height for POM and PA is H = (0.6~0.8)d, so as to help avoid shrink marks and wrinkles by guaranteeing sufficient pressure holding, because though these materials possess good fluidity, they become solid very fast with larger contractibility; for materials like PE and PP, gate height H = (0.4~ 0.5)d, because the small-sized gate is helpful for molten plastic shear thinning, thus reducing stickiness.
Application:
1. Suitable for production of plastic parts of various shapes, but it is will not be selected for slender barrel-shaped parts.
Tab Gate:
Pros:
1. It is a form evolved form the side gate, so it shares the various advantages of the side gate;
2. It is a typical impingement gate that can effectively prevent molten plastic jetting.
Cons:
1. Automatic separation of the part and the gate is not allowed;
2. Obvious gate scars are easily left on the surface.
Parameters:
Refer to the side gate parameters for application.
Application:
Suitable for flat plastic parts that impose requirements on surface finish.
Fan Gate:
Gate Calculator For Pc
Pros:
1. The horizontal distribution of the molten plastic is more uniform when passing through the gate, helpful for reduction of plastic part stress;
2. Lower the possibility of air getting into the cavity, to avoid the occurrence of defects, like silver lines and bubbles, etc.
Cons:
1. Automatic separation of the part and the gate is not allowed;
2. Long gate marks are left on the edge of the plastic part, which need to be flattened by a tool.
Parameters:
1. The commonly used height H = (0.25~1.60) mm;
2. Width W = 8.00 mm to ¼ of the cavity width at the gate end.
3. The section area of the gate should be larger than that of the sub-runner.
Application:
Usually used for production of wide but thin plastic parts, as well as transparent plastic parts and those with poor fluidity, like PC and PMMA, etc.
SubmarineGate:
Pros:
1. Flexible choices of gate location;
Automatic separation of the part and the gate is allowed;
3. Smaller gate marks;
4. Applicable for both 2-plate and 3-plate molds.
Cons:
1. Plastic powder is easily dragged at the gate position;
2. Stress mark is easily created at water entry;
3. Plastic films need to be sheared manually;
4. Great pressure loss from the gate to the cavity.
Parameters:
1. Gate diameter d = 0.8~1.5mm;
2. The plastic flow direction and the vertical direction form an angle a between 30°and 60°;
3. The taper b is between 15° and 25°;
4. Distance to the cavity A = (1.5~3.0)mm.
Application:
Suitable for plastic parts that do not allow exposed gate marks on the exterior. For a multi cavity mold, the resistances from the gate to each cavity should be kept as close as possible, so as to avoid viscous flow and obtain better flow balance.
Banana Gate:
Pros:
1. Automatic separation of the part and the gate is allowed;
2. The gate area does not need additional processing;
3. No gate marks will be left on the exterior of the plastic parts.
Cons:
1. Stress marks may show on the surface;
2. Complicated processing;
3. Easily broken and thus blocking the gate if not appropriately designed.
Parameters:
1. Gate diameter at water entry end d = (Φ0.8~Φ1.2) mm, length = (1.0~1.2) mm;
2. A = approx. 2.5D;
3. Φ2.5min* refers to the gradual transition from the large end 0.8D to the small end Φ2.5.
Application:
Normally used for ABS and HIPS, suitable for neither crystalline materials like POM and PBT, nor high-rigidity materials like PC and PMMA, so as to avoid the curvy runner from being broken and thus blocking the gate.
Point Gate:
Pros:
1. Flexible choices of gate location;
2. Automatic separation of the part and the gate is allowed;
3. Smaller gate marks;
4. Low stress around the gate.
Cons:
1. High injection pressure;
2. Complicated structure, usually employing the 3-plate structure.
Parameters:
1. Usually the gate diameter d = (0.8~1.5) mm;
3.The gate length L = (0.8~1.2) mm;
4. To help pull the gate broken from the root, a taper should be set for the gate, a = approx. 15°~20°;
the gate and the runner are joined by arc R1 to ensure that the plastic part is not damaged when pulling the point gate broken; R2 = (1.5~2.0) mm; R3 = (2.5~3.0) mm; height h = (0.6~0.8) mm.
Application:
Usually used for the production of large plates and bottom cases. The proper distribution of gate can help reduce the flow distance of molten plastic and thus guarantee satisfactory distribution of melting marks; also able to be used for production of long barrel-shaped plastic parts to improve ventilation.
All copyright reserved by injection molding manufacturer Sositar Mould
Learn how use GATE Virtual Calculator 2022 Online. Practice solving equations online and get free PC app download link for GATE Virtual Calculator.
GATE 2022 is going to be conducted by IIT Kharagpur. So it's going to come with a lot of difficulties. One of them is using a GATE virtual calculator. So what is it about the GATE virtual calculator that makes candidates want to learn it properly? Well, for one, scientific calculators are not allowed in the GATE exam. And for two, GATE virtual calculators monitor the candidate during their exam to assess how long they use the calculator, something physical scientific calculators cannot do. But what you must understand is that the GATE virtual calculator is just a virtual version of a GATE scientific calculator, so there is no functional difference between them. So, if you already know how to use a scientific calculator, then using a GATE virtual calculator will not be an issue for you.
This article will guide you into using the GATE virtual calculator, its features, whether there is a GATE calculator app for you to practice, whether you can get it offline for PC, and so on. So keep reading and find out!
Contents
GATE Virtual Calculator Download for PC
We want to rest some queries related to obtaining a virtual calculator for your device to practice with your GATE preparations. Firstly, there is no dedicated calculator online just for the GATE exam. There is also no official GATE calculator app. However, Android users may find scientific calculator apps from unofficial, third-party sources. One such source is found here, and it is a highly rated app in the Play Store. In addition, some phones come with an in-built calculator that can be switched to a scientific calculator.
However, for desktop and laptop users, the TCS iON website does provide a scientific calculator in virtual mode. So, you can use this online calculator for your GATE practice.
If you're worried that you have to use your internet connection to use it, downloading it as an offline virtual calculator is possible. Currently, you can download the scientific calculator for PC and Mac (desktop and laptop) only. Follow the steps below:
- Go to the TCS iON weblink.
- Make sure you are connected to the internet before doing this, otherwise the page won't load.
- When you see the calculator on-screen, press Ctrl+S.
- You will be prompted to save an HTML file, rename it, and press 'Save'.
- Go to the folder where you saved the file.
- Turn your Wi-Fi off and open the HTML file.
- The file will open on your default web browser and should work as intended.
How to Use GATE Virtual Calculator?
We've provided some insights on how to use the GATE virtual calculator in a manner that will help you streamline your exam process. The following should give you an idea of what you can and should do with a virtual scientific calculator:
- Understand how memory management works:
- 'MS' stores a value in memory
- 'M+' adds to the value stored in memory
- 'M-' subtracts a certain amount of value from the stored value
- 'MR' recalls the memory, i.e. pressing it will cause the stored value to appear on the screen
- 'MC' will clear the memory of any values and keep it empty
- Pressing MS while another value is already stored will replace the previously stored value with the newly stored value
- The virtual calculator's angle unit is set to Degree by default, but double-check whether it is in Degree or Radial before you begin any calculations
- Press C right before you begin any calculations to clear up any calculations previously performed on it, even if it wasn't by you
- Get into the habit of using Pi (π), log, Exp, and whatnot to save yourself a lot of time during calculations
- Always include parentheses if the equation involves them
The following points are what you must make sure you do not do during the exam:
- Do not change the angle unit whilst calculating equations
- Do not perform multiple calculations simultaneously
- Do not leave the parentheses and the calculations within it unbalanced
Limitations of GATE Virtual Calculator
The virtual calculator does provide many candidates the leeway to calculate some of the most challenging calculations that they cannot do on time without a calculator. However, it does come with its fair share of disadvantages. Here are some points about it that will put any candidate in an uncomfortable position:
- You cannot use the keyboard to type in your calculations
- Candidates who are inept with mouse controls will have a difficult time using the calculator
- Calculations involving logarithmic or hyperbolic functions will provide a precise output of no more or less than 5 digits
- Modulus operations that provide 15-digit outputs may be imprecise
- The calculator registers inputs and outputs between 10-323 to 10308
Frequently Asked Questions on GATE Virtual Calculator
- Is a scientific calculator allowed in GATE?
As mentioned at the start, scientific calculators are not allowed in GATE exams.
- How can I get the GATE offline virtual calculator download for PC?
The TCS iON calculator link provided above can help. For offline use, you can save the HTML page on your computer and use it.
- Is there a GATE calculator app?
Not officially. We have provided a link to an unofficial app that has received positive feedback from its users above.
- Can I use a keyboard to use the virtual calculator?
No, you cannot use the keyboard to type calculations into the virtual calculator. You will be required to use the mouse instead.
- Can the GATE calculator solve quadratic, cubic, and simultaneous equations?
Unfortunately, no. This is not pre-programmed into the virtual calculator. Manual calculations are required.
- Can matrix operations such as inverse and transpose be calculated using the virtual calculator?
No. Much like the issue before, this is not pre-programmed into the virtual calculator. You will have to manually do this.
If you feel we're missing out on more information related to the virtual calculators, then feel free to post your thoughts in the comments. We'll be sure to get back to your queries as soon as we can.