Carbon Steel Casting

What is Carbon Steel Casting?

Carbon Steel Casting is also known as Carbon Steel Investment Casting. Take the carbon steel alloy as raw materials, it is obtained by the casting process. JC Casting is a Carbon Steel Casting manufacturer. We can customize carbon steel casting according to your material compositions

Carbon Steel Casting Alloys: Carbon steel is a steel alloy containing carbon as the main alloying element. Typically, this alloy has less than 2% carbon in its composition, varying usually between 0.1% and 0.9%.

JC Casining is a Carbon Steel Casting. We have.

….. are main products we made with carbon steel material.

概念

厂家，代表产品

steel 种类

特点

厂家， 产品范围，代表，法讯盘

Advantages of Carbon Steel Casting

1. Carbon steel is a very popular material choice for steel castings. It has a wide application in several different industries.
2. Low material cost, variety of material grades. Carbon steel casting is commonly used for industrial applications. Its strength, ductility, and other performance can be improved by heat treatment.
3. Ferromagnetic properties. Carbon Steel Casting is particularly useful for motor and electrical appliances.
4. Carbon steel is safe and durable. It has a high level of structural integrity. These features add to its popularity and make it one of the most created alloys in the world.

Carbon Steel Grade

Choosing the correct carbon steel to match your project’s requirements is vital. It can take full advantage of what this material has to offer. Different grades and processes are used for industrial projects. Such as machine-building, heavy manufacturing, automotive parts, and aviation and rail projects.

There are main three carbon steel grades according to their carbon content.

  • Low-carbon steels: < 0.20% C
  • Medium-carbon steels: 0.20 to 0.60% C
  • High-carbon steels: > 0.60% C 

Low Carbon Steel Casting

Low Carbon Steel Casting
Low carbon steel contains lower levels of carbon content. It has good ductility, weldability, and machinability. It is softer and has a lower tensile strength than other steel. It is not suitable for heat treatment. Carbon steel casting is typically used for automotive and construction applications. Such as fasteners, bolts, shafts, rods, pins, assemblies.

We provide the following low carbon steels for investment casting:

  • 1010
  • 1020
  • 4130
  • 8620
  • 8630
  • Armco Iron
  • WCB

Medium Carbon Steel Casting

Medium carbon steel contains medium levels of carbon content. Best known for its wear resistance. It is harder than low-carbon steel. Also be strengthened using heat treatment. A range of tensile strengths are possible with good ductility and shock resistance readily machined in the softened condition.

Mid carbon steel investment casting alloys are commonly used for military and defense applications.Such as engine components, couplings, crankshafts, aircraft tubing, and firearms.

We provide mid carbon steel alloys, including:

  • 1040
  • 4140
  • 4340
  • 6150
  • 8640
  • CA6NM

High Carbon Steel Casting

High carbon steel contains higher levels of carbon content. Carbon Content is more than 6%. Its features are for strong strength and have good shape memory. This alloy steel casting for high tensile applications withstands wear and abrasion. It is suitable for heavy-duty applications. such as Spring, cranks, and pins.

We provide high carbon steel alloys, including:

  • WCB
  • LCB
  • WCA
  • WCC

Comparison in a table

Types/PropertiesLow Carbon Steel CastingMedium Carbon Steel CastingHigh Carbon Steel Casting
Carbon Content %< 0.25%0.25%~0.60%> 0.60%
UTS400 – 450N/mm2700 – 850N/mm2. 800 – 1000N/mm2
Elongation15%11%5-8%
HB120-180200-300250-400
ApplicationsFasteners, bolts, shafts, rods, pins, assemblies.Engine components, couplings, crankshafts,
aircraft tubing, and firearms.		Spring, cranks, and pins

Carbon Steel Casting Manufacturer & Supplier

JC Casting is a leading investment casting supplier in China. We have our own foundry factory and CNC workshops. We can manufacture carbon steel castings in all carbon steel alloys. The typically use material grades of carbon steel castings in our company are AISI 1010, AISI 1020, AISI 1035, AISI 1045, AISI 1060.

Besides, we can also customize carbon steel casting according to your material compositions. Our investment casting capabilities enable us to achieve tight tolerances in different dimensions for your cost savings.

We have CNC machining capabilities of secondary operations. Such as machining, non-destructive testing, heat treatment, and assembly. If you have Considerations of selecting a grade for your carbon steel casting project. Such as machinability, weldability, strength requirements, formability, and corrosion resistance. Contact us to discuss more details. To select the right carbon steel alloy for your precision casting project.

Typical Carbon Steel Casting Products

碳钢铸件是我们在生产生活中会经常使用到的铸件，它的价值和使用效果都要远远高于其它类型的铸件，碳钢铸件物美的优点使其深受市场的欢迎。

碳钢铸件优点：

1、碳钢铸件的模具费用相比于其它铸件的模具费用较低，因此产品的投入较少，使得碳钢铸件的市场价格也就较低；

2、生产灵活也是碳钢铸件的一大优点之一，从少量到大批量生产都可以，使得碳钢铸件在生产时投入较少；

3、碳钢铸件的表面可以铸出各种LOGO或者精美文字，地提升产品形象；

4、碳钢铸件的形状复杂，可以将多个零件铸成一体，便于使用；

5、是碳钢铸件可以适应各种各样的复杂形状的原因；

6、耐热、、的优点使碳钢铸件物美。

碳钢铸件在热处理时应注意以下几点：

1、炉温升到650℃~800℃时，是否缓慢升温

因为在加热过程中，特别是形状复杂的碳钢铸件，当炉温升到650℃~800℃时，应缓慢升温或在此温度下保温一段时间。因为在这个温度区间碳钢发生相变，伴随着体积变化，产生相变应力，如果升温，容易使铸件薄壁部分与后壁部分以及表面层和中心层之间的温度差增大，从而使铸件的热应力增大，容易导致铸件开裂。

2、保温时间是否足够

为了使铸件内外温度一致，并且有足够的时间使组织转变，后壁铸件的保温时间要比薄壁铸件长一些。

保温时间的计算方法如下：

按同炉铸件   大后壁计算，每25mm保温1小时，适用于壁厚20mm以内的铸件。

按同炉铸件   大后壁计算，每50mm保温1小时，但不少于2小时。

按堆料高度（即铸件堆放高度）计算，一般碳钢铸件保温时间按1m高保温4小时计算。

3、碳钢铸件退火时，一般随炉冷却。

铸钢的铸造工艺特点：

铸钢的机械性能比铸铁高，但其铸造性能却比铸铁差。因为铸钢的熔点较高，钢液易氧化、钢水的流动性差、收缩大，其体收缩率为10～14%，线收缩为1.8～2.5%。为防止碳钢铸件产生浇不足、冷隔、缩孔和缩松、裂纹及粘砂等缺陷，   采取比铸铁复杂的工艺措施：

1、由于钢液的流动性差，为防止碳钢铸件产生冷隔和浇不足，碳钢铸件的壁厚不能小于8mm；浇注系统的结构力求简单、且截面尺寸比铸铁的大；采用干铸型或热铸型；适当提高浇注温度，一般为1520°～1600℃，因为浇注温度高，钢水的过热度大、保持液态的时间长，流动性可。但是浇温过高，会引起晶粒粗大、热裂、气孔和粘砂等缺陷。因此一般小型、薄壁及形状复杂的铸件，其浇注温度约为钢的熔点温度+150℃；大型、厚壁铸件的浇注温度比其熔点高出100℃左右。

2、由于铸钢的收缩超过铸铁，为防止铸件出现缩孔、缩松缺陷，在铸造工艺上大都采用冒口和、冷铁和补贴等措施，以实现顺序凝固。

此外，为防止碳钢铸件产生缩孔、缩松、气孔和裂纹缺陷，应使其壁厚均匀、避免尖角和直角结构、在铸型用型砂中加锯末、在型芯中加焦炭、以及采用空心型芯和油砂芯等来砂型或型芯的退让性和透气性。

铸钢的熔点高，相应的其浇注温度也高。高温下钢水与铸型材料相互作用，极易产生粘砂缺陷。因此，应采用耐火度较高的人造石英砂做铸型，并在铸型表面刷由石英粉或锆砂粉制得的涂料。为减少气体来源、提高钢水流动性及铸型强度，大多碳钢铸件用干型或快干型来铸造，如采用CO2硬化的水玻璃砂型。

铸钢的熔炼一般采用平炉，电弧炉和感应炉等。平炉的特点是容量大、可利用废钢作原料、能准确控制钢的成分并能熔炼   钢及低合金钢，多用于熔炼质量要求高的、大型碳钢铸件用的钢液。

三相电弧炉的开炉和停炉操作方便，能钢液的成分和质量、对炉料的要求不甚严格、容易升温，故能炼   钢、   合金钢和钢等，是生产成型碳钢铸件的常用设备。

此外，采用工频或中频感应炉，能熔炼各种   合金钢和碳含量的钢。感应炉的熔炼、合金元素烧损小、能源消耗少、且钢液，即杂质含量少、夹杂少，适于小型铸钢车间采用。

根据铸件的结构特点的工艺要求，选择适宜的浇注系统，通常采用顶注式、底注式。

（1）浇注系统设置基本原则：浇口、冒口安放位置合理，大小适宜不妨碍铸件收缩，便于排气、落砂和清理，应使铸型尺寸尽量减少，简化造型操作，节省型砂用量和降低劳动强度。

（2）内浇道位置的注意事项：内浇道不应设在铸件重要部位；应使金属液流至型腔各部位的距离   短；应不使金属液正面冲击铸型和砂芯；应使金属液能均匀分散，地充满型腔；不要正对铸型中的冷铁和芯撑。

浇注工艺是碳钢铸件整个生产流程中至关重要的一个环节，如果该环节没有处理得当铸造出合格的碳钢铸件很困难，因此在碳钢铸件生产中，应该严格按照要求来进行浇注环节各项操作。

   先，在浇注前企业应该做足准备工作，以后续的浇注操作能够顺利进行。浇注前准备工作包括：a.清理浇注场地，浇注流程   顺利完成。b.检查浇包的修理质量、烘干预热情况及运输与倾转机构的灵活性和牲；c.了解浇注合金的种类，估算待浇注铸型的数量和所需金属液的重量，防止浇注中存在金属液不足、铸型数量不够的现象。

为了获得合格的碳钢铸件，严格控制浇注温度、浇注速度，严格遵守浇注操作规程很关键。

（1）就浇注温度而言，浇注温度对铸件质量影响很大，应该根据合金种类、铸件结构和铸型特点确定合理的浇注温度范围。根据碳钢的型号选择合理的浇注温度，一般浇注温度在1540-1580℃（浇包内钢水温度）之间。

（2）就浇注速度而言，在型腔内的气体排出顺畅的条件下，对要求同时凝固的铸件可采用较高浇注速度，对要求实现顺序凝固的铸件，尽可能采用较低的浇注速度。

（3）就浇注操作要求而言一般需要按照以下几点来遵守：a.浇注大、中型碳钢铸件，钢水要在钢包内静置1-2min后进行浇注。b.浇注后待铸件凝固完毕，要及时卸除压铁和箱卡，以减少铸件收缩阻力，避免铸件产生裂纹缺陷。

PS

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碳钢 铸钢区别