日标矩形管JIS-G3466尺寸表

日标矩形管jis-g3466尺寸表
日标方管：pvc—u材质为多组分，它的熔体流动性差、粘度大、加工工艺复杂；要满足制品的性能，不同的模具结构要选用不同的配方体系。笔者主要对pvc—u管件注塑模具的浇注系统进行优化。因为浇注系统看似简单却是一副模具*关键的组成部分。可以这样说，模架是模具的基本结构；型腔是成型制品几何尺寸的主要部件；浇注系统是塑料熔体流向型腔的主要通道。所以浇注系统决定着制品的内在性能及表观质量。pvc—u管件注塑模具浇注系统的优化(除配方外)是提高pvc—u管件制品性能的一条重要途径。注系统的几种常用形式¨一般的模具设计主要根据制品的结构来确定，浇注系统的设计也是根据注塑模具的结构进行简单设计，这在设计、制造上可节约成本。应用于pvc—u管件系列制品的浇注系统可归纳为3种。普遍应用于管箍类制品的中心支架浇口类(轮辐式浇口)。普遍应用于11mm以上的9o。弯头、三通等直接进料浇口类(无分流道)，如图1b所示。普遍应用于9o。弯头、45。弯头侧进料浇口类，几种pvc.jam过程中常出现的缺陷注射缺陷，不单指外观的缺陷，还包括物理力学性能的问题，这里主要归纳实际生产中应用上述3种浇注系统成型制品时不易解决的各类缺陷。1浇口部位表面质量pvc—u的熔体粘度较大，不易流动，因而，使用图1中a类浇注系统成型的制品浇口流动冲击现象严重，应力常集中在浇口部位致使制品强度较差，并且易产生注射斑纹。使用b类浇注系统成型的制品除具有a类浇注系统制品的缺陷外，同时由于注射过程产生强大的注射力，芯柱呈简支梁状态，顶端受力过大，芯柱存在变形，制品的壁厚尺寸不均，过厚的地方存在气孑l，再加上薄的地方，致使强度不足，影响整个制品的质量。

日标方矩管尺寸表：
150x75x6mm (rhs) rectangular steel hollow section (19.34 kg/m)
140x140x5mm (shs) square steel hollow section (21.10 kg/m)
150x100x5mm (rhs) rectangular steel hollow section (18.70 kg/m)
140x140x6.3mm (shs) square steel hollow section (26.30 kg/m)
150x100x6.3mm (rhs) rectangular steel hollow section (23.30kg/m)
140x140x8mm (shs) square steel hollow section (32.90 kg/m)
150x100x8mm (rhs) rectangular steel hollow section (29.10 kg/m)
140x140x10mm (shs) square steel hollow section (40.40 kg/m)
150x100x10mm (rhs) rectangular steel hollow section (35.70kg/m)
140x140x12.5mm (shs) square steel hollow section (49.50 kg/m)
150x100x12.5mm (rhs) rectangular steel hollow section (43.60kg/m)
150x150x5mm (shs) square steel hollow section (22.70 kg/m)
160x80x5mm (rhs) rectangular steel hollow section (18.00 kg/m)
150x150x6.3mm (shs) square steel hollow section (28.30 kg/m)
160x80x6.3mm (rhs) rectangular steel hollow section (22.30kg/m)
150x150x8mm (shs) square steel hollow section (35.40 kg/m)
160x80x8mm (rhs) rectangular steel hollow section (27.90 kg/m)
150x150x10mm (shs) square steel hollow section (43.60 kg/m)
160x80x10mm (rhs) rectangular steel hollow section (34.20 kg/m)
150x150x12.5mm (shs) square steel hollow section (53.40 kg/m)
200x100x5mm (rhs) rectangular steel hollow section (22.70 kg/m)
150x150x16mm (shs) square steel hollow section (66.40 kg/m)
200x100x6.3mm (rhs) rectangular steel hollow section (28.30kg/m)
180x180x5mm (shs) square steel hollow section (27.40 kg/m)
200x100x8mm (rhs) rectangular steel hollow section (35.40 kg/m)

日标矩形管参数表：
180x180x6.3mm (shs) square steel hollow section (34.20 kg/m)
200x100x10mm (rhs) rectangular steel hollow section (43.60kg/m)
180x180x8mm (shs) square steel hollow section (43.00 kg/m)
200x100x12.5mm (rhs) rectangular steel hollow section (53.40kg/m)
180x180x10mm (shs) square steel hollow section (53.00 kg/m)
200x100x16mm (rhs) rectangular steel hollow section (66.40kg/m)
180x180x12.5mm (shs) square steel hollow section (65.20 kg/m)
250x150x5mm (rhs) rectangular steel hollow section (30.50 kg/m)
180x180x16mm (shs) square steel hollow section (81.40 kg/m)
250x150x6.3mm (rhs) rectangular steel hollow section (38.20kg/m)
200x200x5mm (shs) square steel hollow section (30.50 kg/m)
250x150x8mm (rhs) rectangular steel hollow section (48.00 kg/m)
200x200x6.3mm (shs) square steel hollow section (38.20 kg/m)
250x150x10mm (rhs) rectangular steel hollow section (59.30kg/m)
200x200x8mm (shs) square steel hollow section (48.00 kg/m)
250x150x12.5mm (rhs) rectangular steel hollow section (73.00kg/m)
200x200x10mm (shs) square steel hollow section (59.30 kg/m)
250x150x16mm (rhs) rectangular steel hollow section (91.50kg/m)
200x200x12.5mm (shs) square steel hollow section(73.00 kg/m)
300x200x6.3mm(rhs) rectangular steel hollow section (48.10kg/m)
200x200x16mm (shs) square steel hollow section (91.50 kg/m)
300x200x8mm (rhs) rectangular steel hollow section (60.50 kg/m)
250x250x6.3mm (shs) square steel hollow section (48.10 kg/m)
300x200x10mm(rhs) rectangular steel hollow section (75.00 kg/m)
250x250x8mm (shs) square steel hollow section (60.50 kg/m)

日标管材重量表：
300x200x12.5mm (rhs) rectangular steel hollow section (92.60kg/m)
250x250x10mm (shs) square steel hollow section (75.00 kg/m)
300x200x16mm(rhs) rectangular steel hollow section (117.00kg/m)
250x250x12.5mm (shs) square steel hollow section (92.60 kg/m)
400x200x8mm (rhs) rectangular steel hollow section (73.10 kg/m)
250x250x16mm (shs) square steel hollow section (117.00 kg/m)
400x200x10mm(rhs) rectangular steel hollow section (90.70 kg/m)
300x300x6.3mm (shs) square steel hollow section (57.90 kg/m)
400x200x12.5mm (rhs) rectangular steel hollow section (112.00kg/m)
300x300x8mm (shs) square steel hollow section (73.10 kg/m)
400x200x16mm (rhs) rectangular steel hollow section (142.00kg/m)
300x300x10mm (shs) square steel hollow section (90.70 kg/m)
450x250x8mm (rhs) rectangular steel hollow section (85.70 kg/m)
300x300x12.5mm (shs) square steel hollow section (112.00 kg/m)
450x250x10mm (rhs) rectangular steel hollow section (106.00kg/m)
300x300x16mm (shs) square steel hollow section (142.00 kg/m)
450x250x12.5mm (rhs) rectangular steel hollow section (132.00kg/m)
350x350x8mm (shs) square steel hollow section (85.70 kg/m)
450x250x16mm (rhs) rectangular steel hollow section (167.00kg/m)
350x350x10mm (shs) square steel hollow section (106.00 kg/m)
500x200x8mm (rhs) rectangular steel hollow section (85.70 kg/m)
350x350x12.5mm (shs) square steel hollow section (132.00 kg/m)
500x200x10mm (rhs) rectangular steel hollow section (106.00kg/m)
350x350x16mm (shs) square steel hollow section (167.00 kg/m)
500x200x12.5mm (rhs) rectangular steel hollow section (132.00kg/m)
400x400x10mm (shs) square steel hollow section (122.00 kg/m)
500x200x16mm (rhs) rectangular steel hollow section (167.00kg/m)
400x400x12.5mm (shs) square steel hollow section (152.00 kg/m)
500x300x10mm (rhs) rectangular steel hollow section (122.00kg/m)
400x400x16mm (shs) square steel hollow section (192.00 kg/m)
500x300x12.5mm (rhs) rectangular steel hollow section (152.00kg/m)
500x300x16mm (rhs) rectangular steel

stkr400方矩管：
skf公司ovak钢厂棒线生产工艺流程：电炉－lfv精炼炉－模铸－均热炉－初轧－火焰清理－15×15坯料－检验、喷丸、修磨－加热－除鳞－轧制－冷却－剪切－打包－发货。该厂年产45万t钢，全部采用模铸，初轧开坯，而没有采用连铸。ovak钢厂也认为连铸轴承钢已不是技术问题，但是他们主要考虑了经济问题，因产品规格的覆盖面使其投资成本与产量规模不相匹配。他们进行了一系列有利于产品质量提高的改造投资。