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A new hacksaw blade should not be used in a cut started with a blade that has been used. Why?

A new blade used in a kerf started with a used blade would lose its set immediately and start binding in the groove. When a blade breaks, it shatters, causing blade particles to fly quite a distance with the possibility of injuring someone.

In sawing operations, comparing to the thick material, the thin material requires a blade with less teeth per inch.

False

Low-helix drills are designed to remove chips from deep holes

False

Magnesium has an excellent corrosion resistance due to formation of a hard thin oxide surface film. True False

False

There is a choice of tooth forms in selecting a blade for the vertical band machine. When deep cuts where additional chip clearance is required, which tooth form should be used?

Skip tooth

Titanium, its importance has grown in recent decades due to its aerospace applications due to its lightweight and _____. A. Excellent strength B. Good strength‑to‑weight ratio C. Outstanding corrosion resistance D. Great toughness

B

Which industry below belongs to primary industry? A. Paper B. Mining C. Hotel D. Government

B

For a smooth finish, a ___ file is recommended. A. double-cut B. single-cut C. either one

B. single cut file

Using an inexpensive testing method, how can you determine whether it is ferrous or a nonferrous metal or if it is steel or gray cast iron?

The best inexpensive way I think would work would be the magnet test, which is often used to see if a metal is a ferrous or nonferrous metal, or perhaps even nickel. As for steel and gray cast iron, the best way is the spark test when both metals show a distinct of spark when shown.

What clamping position should be considered when mounting a vise on a workbench?

They should be mounted in such a way a long piece can be held in a vertical position extending alongside the bench.

For operations on large castings that are too heavy to be repositioned by the operator for drilling each hole, ____ drill press is useful.

the radial drill press

According to AISI-SAE Designation Scheme, 1020 steel contains ___ % C.

0.20%

The head produced by cuttings action can affect the material structure of blade teeth, cutting fluids will

1 dissipate much of this heat 2 greatly prolong the life of the blade 3 produce a smoother finish 4 lubricate the blade & transport chips out of the cut.

For drilling hard materials, point angles should be from_____ degrees

135-150

In any sawing operation, at least___ teeth onh the blade must be in contact with the work at all times. 1 2 3 4

3

To show an object completely, an orthographic drawing must have a minimum of ___ views. A. 3 B. 4 C. 1 D. 2

A

What is the difference between a processing operation and an assembly operation?

A processing operation transforms a work material from one state of completion to a more advanced state that is closer to the final desired product. An assembly operation joins two or more components to create a new entity, called an assembly, subassembly, or some other term that refers to the joining process

Based this sparking test, the type of the steel is, a lot dark orange spark A. Cast iron B. Low-carbon steel C. High-speed steel D. High-carbon steel

C

Metals used in manufacturing are usually alloys, which are composed of two or more elements, with at least _____ being a metallic element. A. 2 B. 3 C. 1 D. 4

C

Production systems consist of __. A. People B. Equipment C. Procedures D. All above

D

Which process below can enhancing properties of materials? A. Grinding B. Milling C. Coating D. Heat treatment

D

Industrial hazard if it is continuously above ____ decibels (dB). Excess noise can cause permanent hearing loss. A. 90 B. 85 C. 80 D. 100

D. 100

As the band set wears, the cut will drift toward the side of the band with the less set still remaining. True False

False

An alloy is a metal composed of two or more elements, at least one of which is nonmetallic. True False

False

___ are often used to put the finishing touches on a machined workpiece, either to remove burrs or sharp edges, or as a final fitting operation.

Files

What are the two basic kinds of hand-powered arbor press? What are the advantages of them compared to the power-driven presses?

Mechanical and Hydraical One advantage is that the lever on a arbor press gives a "feel" or a sense of pressure applied, which is not possible with the power driven presses. They are a superior tool when dealing with broaching, which is the process of cutting shapes on a metal part.

The elements listed in the periodic table can be divided into 3 categories. What are they?

Metallic which occupy the left and center portions of the table. a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Nonmetals are located on the right side of the periodic table- Substances which are soft and dull, i.e., non-lustrous, non-sonorous, non-ductile, non-malleable and poor conductor of heat and electricity are called non-metals. semi metal- located between metals and nonmetals, an imprecise term used to describe a chemical element that forms a simple substance having properties intermediate between those of a typical metal and a typical non metal.

What are the four categories of engineering materials used in manufacturing? Specify the definition for each of them.

Metals used in manufacturing are usually alloys, which are composed of two or more elements, with at least one being a metallic element. A ceramic -a compound containing metallic(or semimetallic) and nonmetallic elements. A polymer -a compound formed of repeating structural units called mers, whose atoms share electrons to form very large molecules. A composite -a material consisting of two or more phases that are processed separately and then bonded together to achieve properties superior to those of its constituents.

What is the major use of copper? What is the basic difference between brass and bronze?

Most wide use for copper in modern times is being used as a electrical conductor, such as wiring and motors. To my understanding the main difference is that bronze is a harder metal than brass. and that brass is tougher than bronze.

What are the differences between primary, secondary, and tertiary industries? Supply one example for each category.

Primary industries cultivate and exploit natural resources, such as agriculture and mining. Secondary industries take the outputs of the primary industries and convert them into consumer and capital goods. Tertiary industries constitute the service sector of the economy.

Need to shape soft metal in one metalworking tasks, which hammer should be used?

Rubber Mallet

Compared to the electric power tool equivalents, pneumatic tools have the advantages of

Safer to run and maintain without risk of sparks, short-circuiting or electrocution less likely to self destruct in case the tool is jammed or overloaded

Compared to their electric power tool equivalents, pneumatic tools have the advantages of?

Safer to run and maintain- No risk of sparks or short-circuiting, or electrocution.- Have a higher power to weight ratio, allowing a smaller, lighter tool to accomplish the same task.- less likely to self-destruct in case the tool is jammed or overloaded.

___tooth form is best for accurate cuts where a good finish may be required

Skip

What is the advantage of a spiral flute reamer over a straight flute reamer?

Spiral-fluted reamers cut with a shearing action. They bridge over keyseats and grooves without chattering.

which drill is used to position holes accurately for further drilling with regular drills.

Spotting

Two kinds of sets are found on hand hacksaw blades are the set and the set.

Straight or Alternate set- Wavy set

What are the 6 basic types of tool steels and what are the symbols assigned to them?

T, M- High-speed tool steels -cutting tools-Tungsten-based, Molybdenum-based types H Hot-working tool steels -hot-working dies H1 to H19, chromium-based types, H20 to H39, tungsten-based types, H40 to H59, molybdenum-based types D -Cold-work tool steels -cold working dies -High-carbon, high-chromium types W- Water-hardening tool steels -High-carbon steels S- Shock-resistant tool steels -tools needing, Medium carbon, low alloy high toughness, for applications such as sheet metal punching P- Mold steels -for molding plastics and rubber

The Radial Drill Press -is the most versatile type of drilling machine. It is useful for____.

The most versatile type of drilling machine and is useful for operations on large castings that are too heavy to be repositioned by the operator for drilling.

Why physical properties in manufacturing are important?

The reason they are so important is because they often influence process performance for example, In machining, thermal properties of the work material determine cutting temperature, which affects tool life

In general, density decreases with increasing temperature, and volume per unit weight increases with increasing temperature. This effect of temperature on density is named as ____.

Thermal Expansion

What happens if too much pressure is applied when filing?

Too much pressure will break teeth off of a file. It also will cause pinning and scratching of the work surface.

___ wrenches provide the correct amount of tightening torque on a screw or nut.

Torque Wrench

If a tool material passes through the work to quickly, heat can dull the tool or cause it to ail.

True

What can be done to control grinding dust?

Two ways to control grinding dust, which is the fine metal particles from abrasive wheels. Two ways this can be done, one is buying a vacuum dust collector and as well is wearing a respirator.

Manufacturing processes are usually accomplished as unit operations. Define unit operation.

Unit Production is a type of production charaectized by unit- piece manufacture of production of varied and changing nonclemature

Vises are used to hold work for filing, hacksawing, chiseling, and bending light metal. Also holding work when ____ parts.

Vises are used to hold work for filing, hacksawing, chiseling, and bending light metal. They are also used for holding work when assembling and disassembling

When the cross-sectional shape of the workpiece varies, which type of set of saw blades should be chosen?

Wave Set

What is manufacturing? Please discuss it from 2 different views.

What is Manufacturing The application of physical and chemical processes to alter the geometry, properties, and/or appearance of a given starting material to make parts or products. Economically, manufacturing is the transformation of materials into items of greater value by means of one or more processing and/or assembly operations

How are product variety and production quantity related when comparing typical factories?

When it comes to how product variety and production quantity are related to another and by comparing other factories. They are related because product variety and production quantity are inversely correlated in term of factory operations. If a factories product variety if high then its production quantity is likely to be low. and vice versa.

Describe properly lift proper lifting -a permanent back injury Do not try to be a superman

Within the lifting capability- Keep your back straight-squat down-bending your knees- lift smoothly using the muscles in your legs-position the load -replace the load back-lower it in the same manner in which picked up

There is a choice of tooth forms in selecting a blade for the vertical band machine. Precision or regular tooth form is best for ____

accurate cuts where a good finish may be required.

Exploded views appear in manuals used for repair and

assembly

Density is determined by _____ and other factors, such as atomic radius & atomic packing.

atomic number

When certain object sizes and shapes are not represented truly in a typical orthographic drawing, an ____ view may be required.

auxiliary

Why dimensions are important for drawings?

because you need dimensions in drawings to communicate the size specifications of data in a project. So when you look at a drawing it will give a better understanding on what is needed to be built at exact specifications.

A machine has a cap screw that needs to be tightened and released quite often. Which wrench would be best to use in this case, an adjustable or box wrench? Why?

box wrench, it clears the user hand, and enables to be used in tight places and has a precise fit.

Sawing machines can generally be divided into two classifications.

cuttoff, vertical band

The blade on the band saw should be installed with the teeth pointing

downward for cuttings both softwood and hardwood

____holes are one of the most basic of machining operations.

drilling holes

__________are one of the most basic of machining operations.

drilling process

Teeth will ____ if too fast a cutting stroke is used.

dull

Like pure metals, most alloys have a single melting point. true false

false

The key to success when using a hacksaw is to cut using fast strokes.

false

Hook form is useful when____.

fast cutting but leaves a rougher finish

In general. the Metals can be classified into _______ metal, and ________ metal.

ferrous, non ferrous metals

Iron alloys containing from 2.1% to about 4% carbon and from 1% to 3% silicon. The most important types is____iron.

gray cast iron

if to much pressure has to be applied to get a cut, the blade

is dull

In sawing operations, comparing to the thick material, the thin material requires a blade with ___teeth per inch. (more or less)

more teeth per inch

Reamers are tools used mostly to ___.

mostly to precision finish holes to a specific size.

Reamers are tools used mostly to _____

mostly to precision finish holes to a specific size.

Skip tooth is useful on ___ where additional chip clearance is required.

on deep cuts where additional chip clearance is required.

Describe at least 2 compressed-air hazards.

one type of air hazard that can happen is from a damage hose if there is a leak on the hose, it can lead to a low pressure which can lead tp malfunction or worse. And if there is a build of pressure, it can lead to injury. The second hazard is a compressed air generator which if not taken care of could lead to damage or injury.

A method of preventing long, stringy, chips is called

pecking

Physical Properties that define the behavior of materials in response to_____ forces other than mechanical.

physical

Powers tools are operated with external power. Based on the type of their power source, they can be put into 4 categories

pnemutic, electric, hydraluic, power actuacted

Spotting Drill used to _____for further drilling with regular drills.

position holes accurately for further drilling with regular drills

When using a wrench, you can pull it or push it.

pull no push

As a rule, use a coarse-tooth blade on ____ material, for sufficient chip clearance.

soft

12In operating drilling machines, The clamp bolt should be _____The strap should also be ______

the clamp bolt should be as close to the workpiece as possible, and the strap should also be level to prevent bending of the bolt.

In operating drilling machines, the clamp bolt should be ___ the workpiece as possible. The strap should also be level to ____6

the clamp bolt should be as close to the workpiece as possible, and the strap should also be level to prevent bending of the bolt.