Merchandise Description

Merchandise Parameters

The substance is low carbon or alloy metal,these kinds of as ZG270-five hundred,ZG42CrMo,ZG35Mn and so on.
 

Material:ZG25CrNiMo

Steel Grade	Chemical Composition %
	C	Si	Mn	Cr	Ni	Mo	S	P
ZG25CrNiMo	.25-.thirty	.twenty-.40	.70-.90	.forty-.70	.forty-.70	.fifteen-.twenty five	<=0.571	<=0.571
ZG30CrMo	.26-.33	.17-.37	.forty-.70	.eighty-1.10	–	.fifteen-.twenty five	<=0.571	<=0.571
ZG35CrMo	.32-.forty	.17-.37	.forty-.70	.eighty-1.10	–	.fifteen-.twenty five	<=0.571	<=0.571

Regular	Yield Energy Rp0.two  /MPa	Tensile Energy Rb / MPa	Elogation A / %	Reduction of Region Z/ %
60K	≥414	≥586	≥18	≥35
75K	≥517	≥655	≥18	≥35
80K	585-660	≥725	≥18	≥35

 

Material	C	Si	Mn	P	S
ZG270-500	.32-.forty	.twenty-.fifty two	.forty five-.90	≤0.035	≤0.035

 

Content	C	Si	Mn	P	S	Cr	Mo
ZG42CrMo	.38-.43	.15-.35	.75-1.00	≤0.035	≤0.035	0.80-1.ten	0.15-.25

 

Content	C	Si	Mn	P	S
ZG35Mn	.30-.40	.60-.80	one.10-1.forty	≤0.035	≤0.035

It is up to customers’ need.
 

Item	Standard
Casting Materials	EN 15713/EN 10571/BS 3100/DIN 1681/DIN17205
Casting Tolerance in Blank	ISO 8062 CT thirteen
Dimension Tolerance	DIN ISO 2768m
NDT	ASTM A609 Amount 2 or 3 /EN 12680/ASTM E94 Stage 2 or 3
Heat Therapy	Normalizing+Tempering+Quenching
Hardness	As Needed

 

Company Profile

Haian CZPT Casting Co.,Ltd. is established in 2003 in CZPT City.

In 2007,we moved our manufacturing unit to Sunzhuang town and now we can offer bigger metal castings with max. weight forty five tons.

In 2011,we created a new sand mildew maiking workshop with one hundred twenty tons refinining CZPT and the max. bodyweight can be one hundred twenty tons.

In 2013,we compensated much more attenion on the castings for shipbuilding and started out to offer marine castings for most of domestic well-known shipyards.

From 2013 to 2571,we acquired a lot more and much more devices to improve our ability from rough machining to finished machining.

In 2571,we built yet another new sand mold producing workshop for the swift advancement of market need.

Now we monthly source 6000 tons different castings for different buyers of diverse market,such as cement mill,shipubuilding,petroleum machinery,rolling mill,forging press and so on.

Prodcution Process

1)Sample producing

We have our personal picket pattern making workshop.
But our organization is usually hectic,
we also have around ten sub-contractors for pattern creating.
They aid us for the sample but will be inspected according to our principles.
We will report for each and every pattern inspection.

two)Silica or chorme sand cores
We have about eighty technicans for sand main generating which is divided into around ten groups.
Most of the technicans has a lot more than 10 years’ knowledge.
Most of the sand core is manufactured by silica sand with typical sand inside of it.
The widespread sand will be utilised repeatly.
For some important place,this kind of as R corner,we will use chorme ore sand.
The outside the house of the sand main,we will do the painting,burn and clean it.
We will assemble diffrent sand cores with each other and hold out for pouring.

three)Melting and Pouring

We constantly do the melting following mid-night for less expensive electric charge.
And we generally do pouring in the early morning.

No.	Tools Name	Amount(Set)
1	twenty five tons Electrical Arc Furnace	1
two	fifty tons Intermediate Frequency Furnace	2
three	120 tons Refining Furnace	1
4	a hundred and twenty tons VD Furnace	two

Just before and right after pouring,we will do the chemical compostion take a look at.

4)Cooling

Following pouring,we will wait around for various time for cooling according to casting’s excess weight.

Merchandise	Bodyweight in blank(Metric Tons)	Cooling Time(Hour)
1	<25	forty eight
2	>25-forty	72
3	>40-55	ninety six
4	>55-72	120
five	>72-96	144
six	>96-a hundred and fifteen	168
7	>115	192

We have our encounter and principles for cooling time.
Right after cooling,we will shake the casting out of the steel containers and cleanse them.
5)Warmth Remedy
Normalizing will be 3 days whilst tempering is 4 days.
We have about 10 sets of warmth therapy furnaces.
The most significant 1 is 12m*9m*6m.
It is also the greatest dimensions of castings we can make.

Right after heat therapy,we will do the mechanical home check.
Our regular take a look at block’s dimensions is 230mm*70mm*50mm.
1 casting portion will min. have 3 pcs take a look at blocks.
We have our testing heart and it is approved by CNAS. 
six)Attract the line and do the first tough machining
We can do the machining from rough to finished machining.

7)NDT after tough machining

eight)Welding repair
We have prosperous encounter for generating assistance rollers and kiln tyres,
then there is no welding for the outside operating situation.
This is our special technology.
Every 12 months we provide around 400pcs kiln tyres,930pcs assist roller,a hundred and seventy sets equipment( in 2 halves).
But for some other castings,if we do the welding repair,
we will do the tempering for pressure relief later.
All of our welders have the SGS certficate.

9)Shot blasting and grinding
We have a robert grinder.
We have a 120 tons rotary shot blasting desk. 

10)Ultimate machining
We have a whole lot of vertical lathes from 2.5m to 10m.

 

Certifications

We get approval from CNAS for our laboratory.
We also have 9 class certificate,these kinds of as Ab muscles,DNV,NK,RINA,KR,CCS,BV and so on.

 

Packaging & Shipping

We offer a great deal of castings for cement mill,rolling mill,shipbuilding and so on.

We can do the packing according to our guidelines or in accordance to customers’ requirement.

 

After Product sales Services

Typically there is a twelve months high quality warantty.

We do at minimum 3 occasions NDT:after tough,semi-finished and finished machining.

And also the consumer will do the witness during or following finished machining.

If there is also any problem when you receive the castings,
please send us images and thorough defects,
we will negotiate with you and make a payment.

A 3rd party inspection before shipment is welcomed.

 

US $2,500-6,000 / Ton |

20 Tons (Min. Order)

###

Type:	Chemical Hardening Sand
Casting Method:	Directional Crystallization
Sand Core Type:	Sodium Silicate Sand Core
Application:	Machinery Parts
Machining:	Machining Center
Material:	Steel

###

Samples:	US$ 20/kg 1 kg(Min.Order) | Request Sample

###

Customization:	Available | Customized Request

###

Steel Grade	Chemical Composition %
	C	Si	Mn	Cr	Ni	Mo	S	P
ZG25CrNiMo	0.25-0.30	0.20-0.40	0.70-0.90	0.40-0.70	0.40-0.70	0.15-0.25	<=0.025	<=0.025
ZG30CrMo	0.26-0.33	0.17-0.37	0.40-0.70	0.80-1.10	–	0.15-0.25	<=0.025	<=0.025
ZG35CrMo	0.32-0.40	0.17-0.37	0.40-0.70	0.80-1.10	–	0.15-0.25	<=0.025	<=0.025

###

Standard	Yield Strength Rp0.2  /MPa	Tensile Strength Rb / MPa	Elogation A / %	Reduction of Area Z/ %
60K	≥414	≥586	≥18	≥35
75K	≥517	≥655	≥18	≥35
80K	585-660	≥725	≥18	≥35

###

Material	C	Si	Mn	P	S
ZG270-500	0.32-0.40	0.20-0.52	0.45-0.90	≤0.035	≤0.035

###

Material	C	Si	Mn	P	S	Cr	Mo
ZG42CrMo	0.38-0.43	0.15-0.35	0.75-1.00	≤0.035	≤0.035	0.80-1.10	0.15-0.25

###

Material	C	Si	Mn	P	S
ZG35Mn	0.30-0.40	0.60-0.80	1.10-1.40	≤0.035	≤0.035

###

Item	Standard
Casting Material	EN 10293/EN 10025/BS 3100/DIN 1681/DIN17205
Casting Tolerance in Blank	ISO 8062 CT 13
Size Tolerance	DIN ISO 2768m
NDT	ASTM A609 Level 2 or 3 /EN 12680/ASTM E94 Level 2 or 3
Heat Treatment	Normalizing+Tempering+Quenching
Hardness	As Required

###

No.	Equipment Name	Quantity(Set)
1	25 tons Electrical Arc Furnace	1
2	50 tons Intermediate Frequency Furnace	2
3	120 tons Refining Furnace	1
4	120 tons VD Furnace	2

###

Item	Weight in blank(Metric Tons)	Cooling Time(Hour)
1	<25	48
2	>25-40	72
3	>40-55	96
4	>55-72	120
5	>72-96	144
6	>96-115	168
7	>115	192

US $2,500-6,000 / Ton |

20 Tons (Min. Order)

###

Type:	Chemical Hardening Sand
Casting Method:	Directional Crystallization
Sand Core Type:	Sodium Silicate Sand Core
Application:	Machinery Parts
Machining:	Machining Center
Material:	Steel

###

Samples:	US$ 20/kg 1 kg(Min.Order) | Request Sample

###

Customization:	Available | Customized Request

###

Steel Grade	Chemical Composition %
	C	Si	Mn	Cr	Ni	Mo	S	P
ZG25CrNiMo	0.25-0.30	0.20-0.40	0.70-0.90	0.40-0.70	0.40-0.70	0.15-0.25	<=0.025	<=0.025
ZG30CrMo	0.26-0.33	0.17-0.37	0.40-0.70	0.80-1.10	–	0.15-0.25	<=0.025	<=0.025
ZG35CrMo	0.32-0.40	0.17-0.37	0.40-0.70	0.80-1.10	–	0.15-0.25	<=0.025	<=0.025

###

Standard	Yield Strength Rp0.2  /MPa	Tensile Strength Rb / MPa	Elogation A / %	Reduction of Area Z/ %
60K	≥414	≥586	≥18	≥35
75K	≥517	≥655	≥18	≥35
80K	585-660	≥725	≥18	≥35

###

Material	C	Si	Mn	P	S
ZG270-500	0.32-0.40	0.20-0.52	0.45-0.90	≤0.035	≤0.035

###

Material	C	Si	Mn	P	S	Cr	Mo
ZG42CrMo	0.38-0.43	0.15-0.35	0.75-1.00	≤0.035	≤0.035	0.80-1.10	0.15-0.25

###

Material	C	Si	Mn	P	S
ZG35Mn	0.30-0.40	0.60-0.80	1.10-1.40	≤0.035	≤0.035

###

Item	Standard
Casting Material	EN 10293/EN 10025/BS 3100/DIN 1681/DIN17205
Casting Tolerance in Blank	ISO 8062 CT 13
Size Tolerance	DIN ISO 2768m
NDT	ASTM A609 Level 2 or 3 /EN 12680/ASTM E94 Level 2 or 3
Heat Treatment	Normalizing+Tempering+Quenching
Hardness	As Required

###

No.	Equipment Name	Quantity(Set)
1	25 tons Electrical Arc Furnace	1
2	50 tons Intermediate Frequency Furnace	2
3	120 tons Refining Furnace	1
4	120 tons VD Furnace	2

###

Item	Weight in blank(Metric Tons)	Cooling Time(Hour)
1	<25	48
2	>25-40	72
3	>40-55	96
4	>55-72	120
5	>72-96	144
6	>96-115	168
7	>115	192

The Difference Between Planetary Gears and Spur Gears

A spur gear is a type of mechanical drive that turns an external shaft. The angular velocity is proportional to the rpm and can be easily calculated from the gear ratio. However, to properly calculate angular velocity, it is necessary to know the number of teeth. Fortunately, there are several different types of spur gears. Here’s an overview of their main features. This article also discusses planetary gears, which are smaller, more robust, and more power-dense.
Planetary gears are a type of spur gear

One of the most significant differences between planetary gears and spurgears is the way that the two share the load. Planetary gears are much more efficient than spurgears, enabling high torque transfer in a small space. This is because planetary gears have multiple teeth instead of just one. They are also suitable for intermittent and constant operation. This article will cover some of the main benefits of planetary gears and their differences from spurgears.
While spur gears are more simple than planetary gears, they do have some key differences. In addition to being more basic, they do not require any special cuts or angles. Moreover, the tooth shape of spur gears is much more complex than those of planetary gears. The design determines where the teeth make contact and how much power is available. However, a planetary gear system will be more efficient if the teeth are lubricated internally.
In a planetary gear, there are three shafts: a sun gear, a planet carrier, and an external ring gear. A planetary gear is designed to allow the motion of one shaft to be arrested, while the other two work simultaneously. In addition to two-shaft operation, planetary gears can also be used in three-shaft operations, which are called temporary three-shaft operations. Temporary three-shaft operations are possible through frictional coupling.
Among the many benefits of planetary gears is their adaptability. As the load is shared between several planet gears, it is easier to switch gear ratios, so you do not need to purchase a new gearbox for every new application. Another major benefit of planetary gears is that they are highly resistant to high shock loads and demanding conditions. This means that they are used in many industries.

They are more robust

An epicyclic gear train is a type of transmission that uses concentric axes for input and output. This type of transmission is often used in vehicles with automatic transmissions, such as a Lamborghini Gallardo. It is also used in hybrid cars. These types of transmissions are also more robust than conventional planetary gears. However, they require more assembly time than a conventional parallel shaft gear.
An epicyclic gearing system has three basic components: an input, an output, and a carrier. The number of teeth in each gear determines the ratio of input rotation to output rotation. In some cases, an epicyclic gear system can be made with two planets. A third planet, known as the carrier, meshes with the second planet and the sun gear to provide reversibility. A ring gear is made of several components, and a planetary gear may contain many gears.
An epicyclic gear train can be built so that the planet gear rolls inside the pitch circle of an outer fixed gear ring, or “annular gear.” In such a case, the curve of the planet’s pitch circle is called a hypocycloid. When epicycle gear trains are used in combination with a sun gear, the planetary gear train is made up of both types. The sun gear is usually fixed, while the ring gear is driven.
Planetary gearing, also known as epicyclic gear, is more durable than other types of transmissions. Because planets are evenly distributed around the sun, they have an even distribution of gears. Because they are more robust, they can handle higher torques, reductions, and overhung loads. They are also more energy-dense and robust. In addition, planetary gearing is often able to be converted to various ratios.

They are more power dense

The planet gear and ring gear of a compound planetary transmission are epicyclic stages. One part of the planet gear meshes with the sun gear, while the other part of the gear drives the ring gear. Coast tooth flanks are used only when the gear drive works in reversed load direction. Asymmetry factor optimization equalizes the contact stress safety factors of a planetary gear. The permissible contact stress, sHPd, and the maximum operating contact stress (sHPc) are equalized by asymmetry factor optimization.
In addition, epicyclic gears are generally smaller and require fewer space than helical ones. They are commonly used as differential gears in speed frames and in looms, where they act as a Roper positive let off. They differ in the amount of overdrive and undergearing ratio they possess. The overdrive ratio varies from fifteen percent to forty percent. In contrast, the undergearing ratio ranges from 0.87:1 to 69%.
The TV7-117S turboprop engine gearbox is the first known application of epicyclic gears with asymmetric teeth. This gearbox was developed by the CZPT Corporation for the Ilyushin Il-114 turboprop plane. The TV7-117S’s gearbox arrangement consists of a first planetary-differential stage with three planet gears and a second solar-type coaxial stage with five planet gears. This arrangement gives epicyclic gears the highest power density.
Planetary gearing is more robust and power-dense than other types of gearing. They can withstand higher torques, reductions, and overhung loads. Their unique self-aligning properties also make them highly versatile in rugged applications. It is also more compact and lightweight. In addition to this, epicyclic gears are easier to manufacture than planetary gears. And as a bonus, they are much less expensive.

They are smaller

Epicyclic gears are small mechanical devices that have a central “sun” gear and one or more outer intermediate gears. These gears are held in a carrier or ring gear and have multiple mesh considerations. The system can be sized and speeded by dividing the required ratio by the number of teeth per gear. This process is known as gearing and is used in many types of gearing systems.
Planetary gears are also known as epicyclic gearing. They have input and output shafts that are coaxially arranged. Each planet contains a gear wheel that meshes with the sun gear. These gears are small and easy to manufacture. Another advantage of epicyclic gears is their robust design. They are easily converted into different ratios. They are also highly efficient. In addition, planetary gear trains can be designed to operate in multiple directions.
Another advantage of epicyclic gearing is their reduced size. They are often used for small-scale applications. The lower cost is associated with the reduced manufacturing time. Epicyclic gears should not be made on N/C milling machines. The epicyclic carrier should be cast and tooled on a single-purpose machine, which has several cutters cutting through material. The epicyclic carrier is smaller than the epicyclic gear.
Epicyclic gearing systems consist of three basic components: an input, an output, and a stationary component. The number of teeth in each gear determines the ratio of input rotation to output rotation. Typically, these gear sets are made of three separate pieces: the input gear, the output gear, and the stationary component. Depending on the size of the input and output gear, the ratio between the two components is greater than half.

They have higher gear ratios

The differences between epicyclic gears and regular, non-epicyclic gears are significant for many different applications. In particular, epicyclic gears have higher gear ratios. The reason behind this is that epicyclic gears require multiple mesh considerations. The epicyclic gears are designed to calculate the number of load application cycles per unit time. The sun gear, for example, is +1300 RPM. The planet gear, on the other hand, is +1700 RPM. The ring gear is also +1400 RPM, as determined by the number of teeth in each gear.
Torque is the twisting force of a gear, and the bigger the gear, the higher the torque. However, since the torque is also proportional to the size of the gear, bigger radii result in lower torque. In addition, smaller radii do not move cars faster, so the higher gear ratios do not move at highway speeds. The tradeoff between speed and torque is the gear ratio.
Planetary gears use multiple mechanisms to increase the gear ratio. Those using epicyclic gears have multiple gear sets, including a sun, a ring, and two planets. Moreover, the planetary gears are based on helical, bevel, and spur gears. In general, the higher gear ratios of epicyclic gears are superior to those of planetary gears.
Another example of planetary gears is the compound planet. This gear design has two different-sized gears on either end of a common casting. The large end engages the sun while the smaller end engages the annulus. The compound planets are sometimes necessary to achieve smaller steps in gear ratio. As with any gear, the correct alignment of planet pins is essential for proper operation. If the planets are not aligned properly, it may result in rough running or premature breakdown.

editor by czh 2022-12-14